{"title":"Refractors","description":"\u003cdiv class=\"subcategory-grid\"\u003e\n    \u003cdiv class=\"navList\"\u003e\n\n        \u003cdiv class=\"subcategory-item\"\u003e\n            \u003cdiv class=\"subcategory-link-container\"\u003e\n                \u003ca class=\"subcateogory-image-link\" href=\"\/collections\/svbony-1\" alt=\"SVBONY\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/svbony__17024.original.jpg?v=17677539202\" alt=\"SVBONY\"\u003e\n                \u003c\/a\u003e\n            \u003c\/div\u003e\n            \u003ca class=\"subcategory-link\" href=\"\/collections\/svbony-1\" alt=\"SVBONY\"\u003e\n                \u003cspan class=\"subcategory-name\"\u003eSVBONY\u003c\/span\u003e\n            \u003c\/a\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"subcategory-item\"\u003e\n            \u003cdiv class=\"subcategory-link-container\"\u003e\n                \u003ca 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\u003ca class=\"subcategory-link\" href=\"\/collections\/william-optics-ucj6\" alt=\"William Optics\"\u003e\n                \u003cspan class=\"subcategory-name\"\u003eWilliam Optics\u003c\/span\u003e\n            \u003c\/a\u003e\n        \u003c\/div\u003e\n              \u003cdiv class=\"subcategory-item\"\u003e\n            \u003cdiv class=\"subcategory-link-container\"\u003e\n                \u003ca class=\"subcateogory-image-link\" href=\"\/collections\/sharpstar-urht\" alt=\"Sharpstar\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/apieiv1rk__70342.original.jpg?v=1767753920\" alt=\"Sharpstar\"\u003e\n                \u003c\/a\u003e\n            \u003c\/div\u003e\n            \u003ca class=\"subcategory-link\" href=\"\/collections\/sharpstar-urht\" alt=\"Sharpstar\"\u003e\n                \u003cspan class=\"subcategory-name\"\u003eSharpstar\u003c\/span\u003e\n            \u003c\/a\u003e\n        \u003c\/div\u003e\n\n\n   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alt=\"Celestron\"\u003e\n                \u003c\/a\u003e\n            \u003c\/div\u003e\n            \u003ca class=\"subcategory-link\" href=\"\/collections\/celestron-qj1j\" alt=\"Celestron\"\u003e\n                \u003cspan class=\"subcategory-name\"\u003eCelestron\u003c\/span\u003e\n            \u003c\/a\u003e\n        \u003c\/div\u003e\n                    \u003cdiv class=\"subcategory-item\"\u003e\n            \u003cdiv class=\"subcategory-link-container\"\u003e\n                \u003ca class=\"subcateogory-image-link\" href=\"\/collections\/vixen-optics-dbtd\" alt=\"Vixen Optics\"\u003e\n                    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/apig2d1al__54417.original.jpg?v=1767747687\" alt=\"Vixen Optics\"\u003e\n                \u003c\/a\u003e\n            \u003c\/div\u003e\n            \u003ca class=\"subcategory-link\" href=\"\/collections\/vixen-optics-dbtd\" alt=\"Vixen Optics\"\u003e\n                \u003cspan class=\"subcategory-name\"\u003eVixen Optics\u003c\/span\u003e\n            \u003c\/a\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"explore-scientific-ar152mm-f-6-5-refractor","title":"Explore Scientific AR152 152mm f\/6.5 Air-Spaced Doublet Refractor (OTA)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific AR152 is a 152mm (6-inch) air-spaced crown-and-flint achromatic doublet refractor with a native focal length of 988mm at f\/6.5. It is the largest aperture in the AR Series, and at this focal ratio it is built around wide, bright, low-power views rather than long-focus planetary work.\u003c\/p\u003e\n\u003cp\u003eIt is sold as an optical tube assembly with its accessory package — a 2-inch dual-speed focuser, a one-piece 2-inch dielectric diagonal, an 8x50 finderscope on the Hybrid 2N1 base, and a cradle ring set with a 45mm V-block dovetail. No mount and no eyepieces are included.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual deep-sky observers:\u003c\/strong\u003e 152mm of aperture at f\/6.5 gathers roughly 470x the light of the naked eye, with a stated limiting magnitude of 13.4 and 0.77 arcsec resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field observers:\u003c\/strong\u003e at 988mm with a 2-inch focuser, large open clusters, the Veil and the Andromeda halo fit in a single field in a way a long-focus instrument cannot manage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutreach and public star parties:\u003c\/strong\u003e the accessory package is specified for heavy handling, and a refractor needs no collimation between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers moving up in aperture\u003c\/strong\u003e who want a refractor's contrast and zero-maintenance optics rather than a reflector's. This is a good match if you already have a mount rated well above 23 lb and want the largest achromat that mount will carry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e152mm air-spaced doublet:\u003c\/strong\u003e crown-and-flint achromat, air-spaced rather than cemented.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e988mm focal length, f\/6.5:\u003c\/strong\u003e a fast focal ratio for a 6-inch refractor, which is what keeps the tube and the true field manageable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ dual-speed focuser:\u003c\/strong\u003e coarse and fine control on the same knob for setting focus at high power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-piece 2″ diagonal with 99% dielectric coatings:\u003c\/strong\u003e included, not an upsell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid 2N1 finder scope base:\u003c\/strong\u003e takes both finder-shoe standards, with an 8x50 non-illuminated straight-through finderscope and quick-release bracket supplied.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCradle ring set with 45mm wide V-block dovetail,\u003c\/strong\u003e similar to the Vixen dovetail standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished weight 23 lb (10.7 kg)\u003c\/strong\u003e for the tube assembly, and 41″ (1041mm) long with the dew shield extended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn air-spaced achromatic doublet brings two wavelengths to a common focus using a crown element and a flint element separated by an air gap. The air gap gives the designer two extra optical surfaces to work with compared to a cemented doublet, and it removes the cement layer as a thermal and optical variable in a large lens — which matters more at 152mm than at 80mm.\u003c\/p\u003e\n\u003cp\u003eAn achromat is not an apochromat, and the difference is visible on the brightest targets: Venus, Jupiter, Sirius and the limb of the Moon will show some colour fringing at high power, which is inherent to two-element crown-and-flint designs rather than a defect in this one. On extended deep-sky objects, star clusters and low-power sweeping it is not a factor, and that is the observing this focal ratio is built for. Observers who want to reduce it at high power typically add a fringe-killer or minus-violet filter; if you want the colour gone entirely rather than reduced, an ED or apochromatic triplet is the design to look at, and we stock those.\u003c\/p\u003e\n\u003cp\u003eThe 41-inch tube with the dew shield out, at 23 lb bare, is a substantial optical tube. The 45mm V-block dovetail spreads that load across the cradle rings rather than concentrating it at a single saddle point.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow and medium-power visual observing of open clusters, nebulae and the brighter galaxies.\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing at moderate magnification.\u003c\/li\u003e\n\u003cli\u003eDouble-star work, where 0.77 arcsec resolution is the governing figure.\u003c\/li\u003e\n\u003cli\u003ePublic outreach and educational sessions.\u003c\/li\u003e\n\u003cli\u003eWide-field and solar-system astrophotography on a suitably rated equatorial mount.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight is 23 lb before the diagonal, finder and eyepiece, so the loaded tube sits higher. For visual use a mount rated at 30 lb or more is the sensible starting point; for imaging, more again.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the 45mm wide V-block fits Vixen-style saddles. A saddle that takes both Vixen and Losmandy plates will accept it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e none included. The 2-inch focuser and diagonal take both 2-inch and, with the supplied adapter, 1.25-inch eyepieces. At 988mm, a 30mm eyepiece gives 33x and a 9mm gives 110x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder:\u003c\/strong\u003e the Hybrid 2N1 base accepts finder shoes of both common patterns, so an illuminated or right-angle finder can replace the supplied 8x50 without changing the base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e the 2-inch diagonal accepts 2-inch threaded filters. A minus-violet or fringe-killer filter is the usual pairing for high-power lunar and planetary work with a fast achromat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging:\u003c\/strong\u003e a field flattener is needed for anything approaching a flat field across an APS-C sensor. Explore Scientific does not publish a corrected image circle for this tube, so we do not quote one — send us your camera and we will confirm what fits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount and tripod are needed to use it, and so is at least one eyepiece. We can put a package together if it is easier — just ask.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a 23 lb, 41-inch tube.\u003c\/strong\u003e That is a two-hands instrument to carry and mount, and it wants a mount with real capacity underneath it. Worth accounting for if you set up and tear down each session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic, not apochromatic.\u003c\/strong\u003e Some colour on the brightest objects at high power comes with the design. A minus-violet filter reduces it, and at the low and medium powers this focal ratio is built for it is not the limiting factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew shield length is included in the 41-inch figure.\u003c\/strong\u003e Check it against your case or vehicle before ordering if transport is a consideration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes no corrected image circle or backfocus figure\u003c\/strong\u003e for this tube, so those rows are absent from the specifications rather than estimated. If you are planning an imaging train, send us the camera and flattener you have in mind and we will work out the spacing with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe telescope itself is straightforward — a refractor needs no collimation, so it is ready as soon as it is on the mount. The work is in the handling: at 23 lb and 41 inches it takes two hands to lift onto a saddle, and it is easier with the mount already levelled and balanced.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne rated comfortably above the loaded tube weight. 23 lb bare becomes more once the diagonal, finder and a 2-inch eyepiece are on it, so 30 lb of rated visual capacity is a reasonable floor. Tell us what you have and we will tell you honestly whether it will carry this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 2-inch diagonal, 8x50 finder and cradle rings are included; eyepieces are chosen separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see colour fringing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn Venus, Jupiter, Sirius and the lunar limb at high magnification, yes — that is what an achromatic doublet does. On clusters, nebulae and galaxies at the low to medium powers this scope is built for, it is not something you notice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I image with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor the Moon, planets and wide-field work on a properly rated equatorial mount, yes. For deep-sky imaging it needs a field flattener, and the achromatic design will record more colour around bright stars than an ED or apochromatic tube would.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the AR102 and AR127?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSame optical design and same f\/6.5 focal ratio, scaled up. The AR152 gathers the most light and resolves the finest detail of the three, at 23 lb against the smaller tubes' lighter weights. Aperture and portability trade directly against each other across the series.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 152mm f\/6.5 air-spaced achromat supplied as a tube assembly with a 2-inch dual-speed focuser, dielectric diagonal, 8x50 finder and Vixen-style dovetail — a wide-field, low-maintenance six inches of aperture that needs a mount rated well above its 23 lb. If you are matching it to a mount you already own, send us the model and we will confirm the fit before you order.\u003c\/p\u003e\n","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012381896815,"sku":"DAR152065-02","price":1177.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ar_152.jpg?v=1785874882"},{"product_id":"explore-scientific-127mm-doublet-refractor","title":"Explore Scientific AR127 127mm f\/6.5 Air-Spaced Doublet Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific AR127 is a 127mm air-spaced crown-and-flint achromatic doublet refractor with a published focal length of 826mm at f\/6.5. That focal ratio is the defining number on this tube: a five-inch achromat built in the classic long-focus tradition would run well over a metre and a half, while the AR127 measures 34″ (863mm) with the dew shield in place and 130mm across the tube.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific publishes a limiting magnitude of 13 and a resolution of .9 arcsec for this objective, and lists the tube assembly at 15.6lb (7.1kg). At 127mm the objective gathers roughly 330 times the light of a dark-adapted eye, which is what puts magnitude 13 within reach on a good night. The tube is aluminium and stainless steel in gloss white, and the optical surfaces carry EMD (Enhanced Multi-Layer Deposition) coatings.\u003c\/p\u003e\n\u003cp\u003eIt arrives as an optical tube assembly with its accessory package: a heavy-duty 2-inch dual-speed Crayford-style focuser, a one-piece 2-inch diagonal with 99% dielectric coatings and a 1.25-inch compression-ring adapter, an 8x50 straight-through finderscope with a 6° field and quick-release bracket, and an extruded aluminium cradle ring assembly on a Vixen-style plate. Mount, tripod and eyepieces are chosen separately.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field visual observers:\u003c\/strong\u003e 826mm with a 2-inch focuser puts large open clusters, the Double Cluster and the sweep of the Milky Way in a single field. A 30mm eyepiece works out to 27.5x here, which is genuinely low power for five inches of aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who want aperture without maintenance:\u003c\/strong\u003e a refractor holds its collimation, so there is no mirror to align before a session and no open tube to collect dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a good match if\u003c\/strong\u003e you already own a mount with real capacity to spare and want the largest achromat that mount will carry comfortably at 15.6lb before accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e127mm air-spaced doublet:\u003c\/strong\u003e crown and flint elements separated by an air gap rather than cemented together, on research-grade diffraction-limited surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e826mm focal length at f\/6.5:\u003c\/strong\u003e short for the aperture, which is what keeps the tube to 34″ and the true field wide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ dual-speed Crayford-style focuser:\u003c\/strong\u003e coarse and fine motion on concentric knobs, which is what makes focus repeatable at higher magnifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-piece 2″ diagonal with 99% dielectric coatings,\u003c\/strong\u003e supplied with the telescope along with a 1.25-inch compression-ring adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8x50 straight-through finderscope\u003c\/strong\u003e with a wide 6° field, front objective focus and a quick-release bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCradle ring assembly and universal adjustable mounting plate:\u003c\/strong\u003e the Vixen-style plate fits saddles from Explore Scientific, Meade, Celestron, Vixen and others.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser-serviceable lens cell:\u003c\/strong\u003e refractors rarely need collimation after factory adjustment, and the cell design allows it to be done at home.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished dimensions:\u003c\/strong\u003e 130mm tube diameter, 34″ (863mm) length with the dew shield, 15.6lb (7.1kg) assembly weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn achromatic doublet brings two wavelengths of light to a common focus by pairing a crown-glass element with a flint-glass element of opposing dispersion. Air-spacing the two, rather than cementing them, gives the designer four working surfaces instead of two and removes the cement layer as a thermal variable inside a 127mm lens. It also lets the cell hold each element independently, which is part of why consumer collimation is possible on this tube at all.\u003c\/p\u003e\n\u003cp\u003eAn achromat is not an apochromat, and at f\/6.5 the difference shows on the brightest targets. Venus, Jupiter, Sirius and the lunar limb will carry a violet edge at high magnification — the behaviour of a two-element crown-and-flint design rather than a fault in this example. On clusters, nebulae and general low-power sweeping, which is the observing an f\/6.5 five-inch is built around, it is not a factor. Observers who want it reduced usually add a minus-violet filter to the 2-inch diagonal, and we stock those; observers who want the colour gone rather than reduced are looking at an ED or apochromatic triplet, which we also carry.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow and medium-power sweeping of open clusters, bright nebulae and the larger galaxies.\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing on steady nights, within the published .9 arcsec resolution.\u003c\/li\u003e\n\u003cli\u003eDouble-star work, where the resolution figure is the governing specification.\u003c\/li\u003e\n\u003cli\u003ePublic outreach, star parties and classroom sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight is 15.6lb before the diagonal, finder and an eyepiece, so the loaded assembly sits above that. A mount rated comfortably beyond the loaded figure is the sensible starting point for visual use, and more again for imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the Vixen-style universal plate on the cradle rings drops into Vixen saddles and into dual-fit saddles that take both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e none supplied. The 2-inch focuser and diagonal accept 2-inch eyepieces directly and 1.25-inch eyepieces through the included compression-ring adapter. At 826mm, a 30mm gives 27.5x, a 25mm gives 33x, a 9mm gives 92x and a 5.5mm gives 150x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging:\u003c\/strong\u003e a field flattener is the usual addition for deep-sky work with a fast refractor. Explore Scientific does not publish a corrected image circle or a backfocus figure for this tube, so we are not quoting one — send us the camera and flattener you have in mind and we will work out the spacing with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly rather than a complete telescope.\u003c\/strong\u003e A mount, a tripod and at least one eyepiece complete it. We can quote the whole package together if that is simpler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a 34-inch, 15.6lb tube.\u003c\/strong\u003e That is a two-hands lift onto a saddle and a real presence in a car boot. Levelling and balancing the mount before the tube goes on makes the job easier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic, not apochromatic.\u003c\/strong\u003e Colour on the brightest objects at high power comes with the design at this focal ratio. A minus-violet filter reduces it, and at the low and medium powers this tube is built for it is not the limiting factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes no corrected image circle and no backfocus figure\u003c\/strong\u003e for the AR127, so those rows are absent from the specification table rather than estimated. If you are planning an imaging train, tell us what is in it and we will sort the spacing out with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics are the easy part — a refractor arrives collimated and stays that way, so the telescope is ready the moment it is on the mount. The effort is in the handling: 15.6lb and 34 inches is a two-handed lift, and the cradle rings slide onto a Vixen saddle in one motion once the mount is levelled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne rated well beyond the loaded tube weight. 15.6lb bare becomes noticeably more with the 2-inch diagonal, the 8x50 finder and a heavy eyepiece hanging off the back. Tell us what you already own and we will give you a straight answer on whether it will carry this comfortably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 2-inch dual-speed focuser, the 2-inch dielectric diagonal, the 1.25-inch adapter, the 8x50 finder and the cradle rings are all included; eyepieces are chosen to suit the observing you do.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see colour fringing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn Venus, Jupiter, Sirius and the edge of the Moon at high magnification, yes. That is what an f\/6.5 achromatic doublet does. On clusters, nebulae and galaxies at the powers this focal ratio was designed around, it is not something that intrudes.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 127mm f\/6.5 air-spaced achromat at 826mm focal length, supplied as a 15.6lb tube assembly with a 2-inch dual-speed focuser, a dielectric diagonal, an 8x50 finder and a Vixen-style dovetail — five inches of low-maintenance aperture built for wide, bright views. If you are matching it to a mount you already have, send us the model and we will confirm the fit with you before anything ships.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012381995119,"sku":"DAR127065-02","price":1039.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ar_12711__65320.png?v=1766547929"},{"product_id":"explore-scientific-es-ed0806-01","title":"Explore Scientific ED80 Essential Series 80mm f\/6 Air-Spaced Triplet APO Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED80 Essential Series is an 80mm air-spaced triplet apochromatic refractor with a focal length of 480mm at f\/6. The objective uses HOYA FCD1 extra-low-dispersion glass with EMD multi-layer coatings. Explore Scientific publishes a limiting magnitude of 12 and a resolution of 1.45 arcsec for it, over an 85mm tube diameter, at 5.95 lb (2.7 kg) — a genuinely portable weight for a triplet apochromat.\u003c\/p\u003e\n\u003cp\u003eThe tube measures 18.5″ (475mm) with the dew shield extended and 15″ (381mm) with it retracted, which puts it comfortably inside a carry-on-sized case. It comes with a 2-inch rack-and-pinion focuser with extension tubes, a pre-installed Hybrid Finder Scope Base and a Vixen-style dovetail, so the tube is ready to mount and use without further hardware.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imagers:\u003c\/strong\u003e 480mm at f\/6 frames large nebulae, the Andromeda region and big open clusters as whole objects, and a fast focal ratio keeps exposures short.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravellers and observers short on space:\u003c\/strong\u003e 5.95 lb and a 15-inch retracted tube go in hand luggage, in a backpack or on a small mount without argument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImagers running a larger main telescope\u003c\/strong\u003e who want a well-corrected secondary or guide instrument that also works as a standalone scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observers who value grab-and-go:\u003c\/strong\u003e this is a good match if the telescope you actually use is the one that gets outside in five minutes rather than the one that needs a plan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm air-spaced triplet objective:\u003c\/strong\u003e three elements with air gaps rather than cement, in an apochromatic configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD1 extra-low-dispersion glass:\u003c\/strong\u003e the low-dispersion element that pulls the design's colour correction into apochromatic territory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e480mm focal length at f\/6:\u003c\/strong\u003e fast enough for wide-field imaging and short enough to keep the tube compact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch rack-and-pinion focuser with extension tubes:\u003c\/strong\u003e a positive, direct-drive focuser mechanism, with the extension tubes needed to reach focus with a diagonal or a camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid Finder Scope Base pre-installed:\u003c\/strong\u003e accepts finder shoes of both common patterns without changing the base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVixen-style dovetail\u003c\/strong\u003e for mounting on any Vixen saddle or dual-format saddle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn achromatic doublet brings two wavelengths to a common focus and leaves a residual — the secondary spectrum — visible as colour around bright objects. An apochromatic triplet adds a third element, and with one of the three made from extra-low-dispersion glass, the designer can bring three widely separated wavelengths to essentially the same plane. What that means at the eyepiece is that violet and deep red land close enough to the visual focus that colour fringing stops being a feature of the view, and at the sensor it means bright stars record as points rather than as blue-haloed blobs.\u003c\/p\u003e\n\u003cp\u003eHOYA FCD1 is the ED glass in this objective. Its role is dispersion control: it separates the wavelengths less than ordinary crown or flint glass does, leaving the mating elements a smaller residual to correct. Air spacing rather than cementing gives the design six air-glass surfaces to shape instead of four, and removes a cement layer as a thermal variable during cool-down.\u003c\/p\u003e\n\u003cp\u003eAt f\/6 the light cone is fast, which is what makes this a short-exposure instrument for imaging. It also means the field curvature inherent to a refractor objective shows up sooner across a large sensor, which is why wide-field imagers pair a scope like this with a field flattener — and why many use a reducer-flattener to go faster still. Explore Scientific does not publish a corrected image circle or a backfocus distance for this tube, so those rows are absent below rather than estimated. Tell us which camera and flattener you are planning around and we will work the spacing through with you.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography on a tracking equatorial mount, with a flattener matched to the sensor.\u003c\/li\u003e\n\u003cli\u003eGrab-and-go visual observing — open clusters, large nebulae, the Milky Way, comets and the Moon.\u003c\/li\u003e\n\u003cli\u003eTravel astronomy, where 5.95 lb and a 15-inch retracted tube fit the luggage allowance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. At 5.95 lb bare, this tube sits within the capacity of most small equatorial and alt-azimuth mounts — though for imaging, tracking accuracy rather than raw capacity is what governs the choice. Tell us how you plan to use it and we will suggest something appropriate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the Vixen-style plate seats in any Vixen saddle, and in the dual-format saddles that accept both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e 2-inch rack and pinion with extension tubes supplied, so it takes 2-inch accessories directly and 1.25-inch ones with an adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and diagonal:\u003c\/strong\u003e not listed in the published package. At 480mm, a 30mm eyepiece gives 16x, a 20mm gives 24x, and a 9mm gives 53x — we can put together a set that covers the range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e a separate purchase, as it is with any fast refractor used for wide-field imaging. We stock flatteners and reducer-flatteners and can match one to your camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount, tripod, diagonal and at least one eyepiece are separate. We assemble packages around this tube regularly — tell us how you intend to use it and we will price the whole setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEighty millimetres is eighty millimetres.\u003c\/strong\u003e The published 1.45 arcsec resolution and magnitude 12 limit are what the aperture supports. This telescope excels at wide, well-corrected fields rather than at maximum-power planetary detail, and that is what the f\/6 design is built around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA field flattener is a separate item for wide-field imaging.\u003c\/strong\u003e Without one, stars toward the corners of a large sensor will show the field curvature every refractor objective produces. We can match a flattener to your camera's sensor size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so we quote neither. Send us your imaging train and we will work out what we can establish about the spacing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVery little to it. A refractor needs no collimation, so the optics are ready as soon as the tube is on the mount, and at 5.95 lb it is a comfortable one-handed lift. The dovetail slides into a Vixen saddle and locks, the finder goes on the pre-installed base, and the focuser takes the diagonal and eyepiece directly. Most people are observing within a few minutes of carrying it outside.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, most small equatorial and alt-azimuth mounts will carry 5.95 lb comfortably. For deep-sky imaging the requirement is tracking accuracy rather than capacity, so a tracking equatorial mount is the starting point. Tell us what you have or what you are considering and we will give you an honest assessment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces or a diagonal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNeither is listed in the published package. The tube arrives with its 2-inch rack-and-pinion focuser, extension tubes, pre-installed Hybrid Finder Scope Base and Vixen dovetail. We can supply a diagonal and a starting eyepiece set alongside it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see false colour?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn air-spaced triplet on FCD1 ED glass is built to remove it. On the very brightest targets at high power, some residual is inherent to every refracting design, but it is not the limiting factor in this telescope the way it would be in an achromat.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an 80mm f\/6 air-spaced triplet apochromat on HOYA FCD1 ED glass, 480mm focal length, 5.95 lb, with a 2-inch rack-and-pinion focuser, extension tubes, a pre-installed Hybrid finder base and a Vixen dovetail — a wide-field imaging and grab-and-go visual instrument that travels easily and needs nothing from you between sessions. If you are matching it to a mount or planning a flattener and camera behind it, send us the details and we will work through the fit with you.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012382290031,"sku":"ES-ED0806-02","price":727.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ed80_header_281_29__48199.jpg?v=1766547935"},{"product_id":"explore-scientific-ed102","title":"Explore Scientific ED102 Essential Series 102mm f\/7 Air-Spaced Triplet APO Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED102 Essential Series is a 102mm air-spaced triplet apochromatic refractor with a focal length of 714mm at f\/7. The centre element is genuine HOYA FCD1 extra-low-dispersion glass, and Explore Scientific applies proprietary multi-layer coatings aimed at holding transmission high while keeping chromatic aberration low. Published figures are a limiting magnitude of 12.5 and a resolution of 1.14 arcsec.\u003c\/p\u003e\n\u003cp\u003eThe tube is 30.5″ (774mm) long with the dew shield extended and 23.75″ (603mm) with it retracted, 119mm in diameter, and weighs 12 lb (5.4 kg). It rides on a Vixen-pattern dovetail and focuses through a precision 2-inch rack-and-pinion focuser supplied with extension tubes. What ships is the telescope tube with its dew shield and the focuser extension tubes — no mount and no eyepieces.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers:\u003c\/strong\u003e 714mm at f\/7 is a widely used astrophotography focal length — large enough for the brighter galaxies and globulars, short enough to frame the big nebulae and to keep guiding demands reasonable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observers who want colour-free views:\u003c\/strong\u003e the triplet design with FCD1 ED glass removes the violet halo an achromat leaves on Venus, Jupiter and the lunar limb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who travel:\u003c\/strong\u003e this is a good match if you want an apochromat that packs down to 23.75″ with the dew shield retracted and weighs 12 lb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOwners of mid-capacity equatorial mounts:\u003c\/strong\u003e this is a good match if your mount is rated comfortably above the loaded weight of a 12 lb tube plus rings, diagonal, finder and camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-star and lunar observers,\u003c\/strong\u003e working near the published 1.14 arcsec resolution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102mm air-spaced triplet:\u003c\/strong\u003e three elements with air gaps between them rather than cemented pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine HOYA FCD1 ED glass\u003c\/strong\u003e in the centre element, chosen for how closely it brings widely separated wavelengths to a common focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e714mm focal length at f\/7:\u003c\/strong\u003e a balanced focal ratio for both wide-field imaging and medium-to-high power visual work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProprietary multi-layer coatings\u003c\/strong\u003e applied to maximise light transmission alongside the colour correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision 2-inch rack-and-pinion focuser\u003c\/strong\u003e supplied with extension tubes, which is what makes reaching focus with a diagonal or a camera straightforward.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetracting dew shield:\u003c\/strong\u003e 30.5″ (774mm) extended, 23.75″ (603mm) retracted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVixen-pattern dovetail\u003c\/strong\u003e on a tube 119mm in outside diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished performance:\u003c\/strong\u003e limiting magnitude 12.5, resolution 1.14 arcsec, weight 12 lb (5.4 kg).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn achromatic doublet brings two wavelengths to a common focus and leaves the rest slightly out, which shows as a violet halo around bright objects at high power. A triplet apochromat adds a third element so three widely separated wavelengths converge together, and the residual error falls below what the eye picks up in normal use. The glass in the centre element is what makes that practical: extra-low-dispersion types spread the colours less to begin with, so the design has less to correct. HOYA FCD1 is the type used here, and Explore Scientific specifies it as genuine FCD1 rather than an equivalent.\u003c\/p\u003e\n\u003cp\u003eAt f\/7 the light cone is moderate. That has a direct effect on imaging: field curvature and off-axis aberrations are easier to correct than in a fast astrograph, and focus tolerance is looser, which makes a night of unattended imaging less fragile. The 2-inch rack-and-pinion focuser is the mechanical half of that story — rack-and-pinion drives resist slipping under load in a way that a lightly tensioned Crayford does not, which matters when a camera train hangs off the drawtube pointed at the zenith.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific does not publish a corrected image circle or a backfocus distance for this tube, so those rows are absent from the specifications rather than estimated. Send us the camera and flattener you have in mind and we will work out the spacing with you before anything ships.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field and medium-field deep-sky astrophotography at 714mm.\u003c\/li\u003e\n\u003cli\u003eVisual observing of the Moon, planets and double stars where colour correction sets the ceiling.\u003c\/li\u003e\n\u003cli\u003eDeep-sky visual work on clusters, nebulae and the brighter galaxies.\u003c\/li\u003e\n\u003cli\u003ePortable dark-site sessions, given the 12 lb weight and 23.75″ retracted length.\u003c\/li\u003e\n\u003cli\u003eSolar observing with an appropriate front-mounted filter, and outreach sessions where a refractor's zero-maintenance optics matter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight of 12 lb is before rings, diagonal, finder and camera. For visual use a mount comfortably above that loaded figure works well; for imaging, more headroom again.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e Vixen pattern, fitting Vixen saddles and dual-fit saddles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e not included. At 714mm, a 26mm eyepiece gives 27x, a 20mm gives 36x, a 12mm gives 60x and a 6mm gives 119x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e the 2-inch focuser takes 2-inch diagonals, and the supplied extension tubes are what bring the focal plane out to meet one. We stock dielectric 2-inch diagonals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train:\u003c\/strong\u003e a field flattener is the standard companion for deep-sky work. Since no corrected image circle is published, we will confirm the flattener match against your camera rather than quote a figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal extenders:\u003c\/strong\u003e a 2x or 3x extender on 714mm brings lunar and planetary work into a useful magnification range for a 102mm aperture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount, a tripod and at least one eyepiece are needed alongside it. We can quote the package as a whole if that is simpler — tell us what you already own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 30.5″ length is with the dew shield extended.\u003c\/strong\u003e Retracted it is 23.75″, which is the figure to measure a case or a vehicle against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so those rows are left out below rather than filled with an estimate. If you are planning an imaging train, send us the camera and flattener and we will work the spacing out with you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA triplet takes longer to reach ambient temperature than a doublet of the same aperture.\u003c\/strong\u003e Setting the tube outside ahead of the session is what lets the optics settle before high-power observing begins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt 12 lb it is portable but not featherweight.\u003c\/strong\u003e One person handles it comfortably, and the mount underneath it wants capacity to spare once the diagonal, finder and eyepiece are added. We are glad to check your mount against a loaded figure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics need nothing — a refractor holds its collimation, so the tube is ready as soon as it is in the rings and on the mount. At 12 lb it is a comfortable one-person lift, and it goes on most easily with the mount levelled and the counterweights roughly positioned first. The extension tubes take a moment to fit for whatever is going in the focuser.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount will carry it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, one rated above the 12 lb tube weight with room for the diagonal, finder and eyepiece on top. For imaging, more margin, since tracking accuracy falls off well before a mount reaches its rated capacity. Tell us the model you own and we will give you a straight answer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces or a diagonal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The tube arrives with its dew shield and the focuser extension tubes; the diagonal, eyepieces, finder and rings are chosen separately and we can assemble a set that matches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see colour fringing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn air-spaced triplet using HOYA FCD1 ED glass is designed to eliminate it in normal use. On Venus, Sirius and the lunar limb at high power the image stays neutral where a two-element achromat would show violet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I image with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — 714mm at f\/7 is a well-liked deep-sky imaging focal length. A field flattener is the usual addition, along with an equatorial mount and guiding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the 127mm models?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe stock three ED127s and they are easy to confuse, so it is worth being precise. All three are 127mm at 952mm and f\/7.5. The \u003cstrong\u003eED127 Essential\u003c\/strong\u003e uses HOYA FCD1 glass — the same type as this ED102 — in an 18 lb tube with a 2-inch two-speed rack-and-pinion focuser. The \u003cstrong\u003eED127 FCD100\u003c\/strong\u003e steps up to HOYA FCD100 glass and a 2.5-inch dual-speed HEX Crayford focuser, also 18 lb in the painted aluminium tube. The \u003cstrong\u003eED127 FCD100 Carbon Fiber\u003c\/strong\u003e pairs those same optics and focuser with a carbon tube at 14 lb, which is the one to look at if your mount is the limiting factor.\u003c\/p\u003e\n\u003cp\u003eAgainst any of them, this ED102 gathers less light and resolves less detail — 127mm is roughly 55% more aperture area — but it is 12 lb rather than 14 or 18, it is shorter, it asks considerably less of a mount, and at 714mm it gives a wider field per eyepiece. When people are choosing between them, the mount they own or plan to buy usually settles it faster than the optics do. Ask us and we will work through it with you.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102mm f\/7 air-spaced triplet apochromat with genuine HOYA FCD1 ED glass, a 2-inch rack-and-pinion focuser with extension tubes, a Vixen dovetail and a published weight of 12 lb — a 714mm focal length that suits wide-field imaging and high-power visual work equally well. If you are matching it to a mount or planning an imaging train around it, send us the details and we will confirm the fit with you before you order.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012382453871,"sku":"ES-ED10207-02","price":1045.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ed102straightonsmall21__85958.jpg?v=1766547942"},{"product_id":"explore-scientific-ed-127-075-04","title":"Explore Scientific ED127 Essential Series 127mm f\/7.5 Air-Spaced Triplet APO Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED127 Essential Series is a 127mm air-spaced triplet apochromatic refractor with a focal length of 952mm at f\/7.5. The objective uses genuine HOYA FCD1 extra-low-dispersion glass with EMD enhanced multi-layer coatings on every optical surface. Explore Scientific publishes a limiting magnitude of 13 and a resolution of 0.9 arcsec — five inches of well-corrected aperture, which is where a refractor starts to hold its own against much larger reflectors on planetary and double-star work.\u003c\/p\u003e\n\u003cp\u003eThis is the fourth-generation tube, and the changes are worth knowing about. The front cell is a precision design with push-pull tilt and centering adjustment, so the objective can be collimated rather than simply trusted. The focuser is a 2-inch two-speed rack-and-pinion with heavy-duty locks and rotation adjustment. The dew shield retracts, which takes the tube from 41.75″ (1060mm) extended down to 33.25″ (849mm) for transport. Cradle rings with a carry handle, a Vixen-style dovetail, a 2-inch 99% dielectric star diagonal and the Explore Scientific 2N1 finder base all come in the box. The tube alone is 18 lb (8.16 kg); with the rings and diagonal fitted the assembly is closer to 22 lb.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstrophotographers who have outgrown a small refractor:\u003c\/strong\u003e 952mm at f\/7.5 frames galaxies, globulars and planetary nebulae at a scale an 80mm tube cannot reach, while staying short enough to guide without drama.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary and lunar observers:\u003c\/strong\u003e 127mm of unobstructed aperture at 0.9 arcsec resolution delivers the high-contrast, colour-free view that is the reason people buy apochromats in the first place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-star observers,\u003c\/strong\u003e working close to the published 0.9 arcsec figure with no diffraction spikes and no central obstruction to fill in the gaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who want one telescope to do everything well:\u003c\/strong\u003e this is a good match if you would rather own a single instrument that images deep-sky, splits doubles and shows the Moon properly than three that each do one job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone who has been frustrated by a fixed front cell:\u003c\/strong\u003e the push-pull collimation on this generation means star shape is something you can correct rather than live with.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e127mm air-spaced triplet objective:\u003c\/strong\u003e three elements separated by air rather than cement, in an apochromatic configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine HOYA FCD1 ED glass:\u003c\/strong\u003e Explore Scientific specifies the actual FCD1 type rather than an unnamed equivalent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMD enhanced multi-layer coatings\u003c\/strong\u003e on all optical surfaces, applied to hold transmission high across the visual band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision front cell with push-pull adjustment\u003c\/strong\u003e for tilt and centering — the objective can be collimated for the tightest possible stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch two-speed rack-and-pinion focuser\u003c\/strong\u003e with heavy-duty locks and rotation adjustment, so a camera train can be squared up and then held there.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e 41.75″ (1060mm) extended, 33.25″ (849mm) retracted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCradle rings with a slotted carry handle,\u003c\/strong\u003e tapped 1\/4″-20 for piggybacking a DSLR, on a Vixen-style dovetail plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch 99% dielectric star diagonal included,\u003c\/strong\u003e along with the 2N1 finder scope base (finder scope sold separately).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished performance:\u003c\/strong\u003e limiting magnitude 13, resolution 0.9 arcsec, tube diameter 130mm, tube weight 18 lb (8.16 kg).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn achromatic doublet brings two wavelengths to a common focus and leaves a residual — the secondary spectrum — that shows as violet fringing around bright objects. A triplet apochromat adds a third element so that three widely separated wavelengths converge together, and with one element made from extra-low-dispersion glass the residual drops below what the eye registers in normal use. At 127mm this matters more than it does at 80mm: the brighter the image and the higher the usable magnification, the more obvious an uncorrected secondary spectrum becomes. HOYA FCD1 is the ED type used here, and air spacing gives the designer six air-glass surfaces to shape rather than four, while removing a cement layer as a variable during cool-down.\u003c\/p\u003e\n\u003cp\u003eAt f\/7.5 the light cone is moderate rather than fast. For imaging that means field curvature and off-axis aberration are easier to correct than in a fast astrograph, and focus tolerance is looser — which makes an unattended night of subframes considerably less fragile. It also means longer exposures than an f\/5 or f\/6 instrument would need for the same signal, which is the trade you make for the extra focal length and resolution.\u003c\/p\u003e\n\u003cp\u003eThe two-speed rack-and-pinion focuser is the mechanical half of the story. A rack-and-pinion drive resists slipping under a heavy imaging train in a way a lightly tensioned Crayford does not, and that matters when a camera, filter wheel and flattener hang off the drawtube pointed near the zenith. The 10:1 fine adjustment is what makes critical focus at 952mm a matter of a small deliberate movement rather than a hunt.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific does not publish a corrected image circle or a backfocus distance for this tube, so we quote neither rather than estimate. Tell us which camera and flattener you are planning around and we will work the spacing through with you before anything ships.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography at 952mm — galaxies, globular clusters and planetary nebulae — on a tracking equatorial mount with a flattener matched to the sensor.\u003c\/li\u003e\n\u003cli\u003eHigh-power visual observing of the Moon, planets and double stars, where colour correction and unobstructed aperture set the ceiling.\u003c\/li\u003e\n\u003cli\u003eDeep-sky visual work on clusters, nebulae and brighter galaxies.\u003c\/li\u003e\n\u003cli\u003eSolar observing with an appropriate front-mounted filter, and outreach sessions where a refractor's zero-maintenance optics matter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included, and this is the part to plan carefully. The tube is 18 lb bare and roughly 22 lb with rings and diagonal, before a finder, eyepiece or camera. At 952mm the mount also has to track well, not just carry the load — for imaging we would want meaningful headroom over the loaded weight. Tell us what you own or are considering and we will give you a straight assessment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e Vixen-style plate on the cradle rings, seating in any Vixen saddle or dual-format saddle. On a heavier mount, a Losmandy-style plate is a common upgrade for the extra rigidity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e 2-inch two-speed rack and pinion, taking 2-inch accessories directly and 1.25-inch ones with an adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e a 2-inch 99% dielectric star diagonal is included, so the tube is ready for visual use as soon as you add an eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e not included. At 952mm, a 30mm eyepiece gives 32x, a 20mm gives 48x, a 12mm gives 79x and a 6mm gives 159x — we can put together a set that covers the range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder:\u003c\/strong\u003e the 2N1 base is pre-installed and accepts both common finder shoe patterns; the finder scope itself is a separate purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e a separate item for deep-sky imaging, as it is with any refractor. Since no corrected image circle is published, we will confirm the flattener match against your camera rather than quote a figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal extenders:\u003c\/strong\u003e a 2x or 3x extender on 952mm brings lunar and planetary work into a genuinely useful magnification range for a 127mm aperture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount, a tripod and at least one eyepiece are separate. We assemble packages around this tube regularly — tell us how you intend to use it and we will price the whole setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe mount is the real decision here.\u003c\/strong\u003e An 18 lb tube at 952mm asks more of a mount than the raw weight suggests, particularly for imaging. This is the single most common place people underspend, and we would rather talk it through with you first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 41.75″ length is with the dew shield extended.\u003c\/strong\u003e Retracted it is 33.25″, which is the figure to measure a case or a vehicle against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA five-inch triplet takes real time to reach ambient temperature.\u003c\/strong\u003e More glass means a longer cool-down than a doublet or a smaller triplet — setting the tube outside well ahead of the session is what lets the optics settle before high-power observing begins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so we quote neither. Send us your imaging train and we will work out what we can establish about the spacing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics need nothing routine — a refractor holds its collimation through normal use, and the push-pull front cell is there for correction rather than regular adjustment. At 18 lb the tube is a manageable one-person lift, and the carry handle on the rings is genuinely useful for that. Level the mount and position the counterweights first, then the dovetail slides into the saddle and locks. The diagonal and eyepiece go straight into the focuser.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, a mount comfortably above the roughly 22 lb loaded weight of tube, rings and diagonal. For deep-sky imaging at 952mm, more margin again — tracking accuracy falls away well before a mount reaches its rated capacity. Tell us the model you have in mind and we will tell you honestly whether it is enough.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with a diagonal or eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 2-inch 99% dielectric star diagonal is included, along with the cradle rings, dew shield, Vixen dovetail and 2N1 finder base. Eyepieces and the finder scope itself are separate, and we can supply a set that suits how you plan to use it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see false colour?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn air-spaced triplet on genuine HOYA FCD1 ED glass is built to remove it. On Venus, Sirius and the lunar limb at high power the image stays neutral where a two-element achromat of this aperture would show obvious violet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I collimate it myself?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — that is what the push-pull front cell on this generation is for. It is not something the telescope should need often, but if star shape drifts after travel, the adjustment is there rather than requiring a trip back to the manufacturer. Ask us before you start if you have not done it before.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the ED102 Essential?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ED102 is 102mm at 714mm and f\/7, 12 lb, with a single-speed 2-inch rack-and-pinion. The ED127 is 127mm at 952mm and f\/7.5, 18 lb, with a two-speed focuser, push-pull front cell and a diagonal included. The ED127 gathers roughly 55% more light and resolves finer detail; the ED102 is lighter, shorter, asks less of a mount and gives a wider field per eyepiece.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 127mm f\/7.5 air-spaced triplet apochromat on genuine HOYA FCD1 ED glass, 952mm focal length, 18 lb, with a precision push-pull front cell, a 2-inch two-speed rack-and-pinion focuser, a retracting dew shield, cradle rings with a piggyback handle, a Vixen dovetail and a 2-inch dielectric diagonal in the box — a five-inch apochromat that images deep-sky properly and shows the Moon and planets the way an unobstructed aperture should. The mount underneath it is the decision that matters most; send us the details and we will work through the fit with you.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012382781551,"sku":"ES-ED127075-04","price":1655.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ed127_header__23128.jpg?v=1766547948"},{"product_id":"explore-scientific-152mm-carbon-fiber-apo-with-2-hex-focuser","title":"Explore Scientific ED152 152mm f\/8 Carbon Fiber Air-Spaced Triplet APO Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED152 Carbon Fiber is a 152mm air-spaced apochromatic triplet refractor with a focal length of 1216mm at f\/8, built around HOYA FCD1 extra-low dispersion glass in a carbon fibre tube. Explore Scientific publishes a limiting magnitude of 13 and a resolution of .75 arcsec for the optic, with a stated tube weight of 20.5lb; 9.3kg.\u003c\/p\u003e\n\u003cp\u003eThe tube measures 41″ (1041mm) with the dew shield retracted and 52″ (1320mm) extended. It is supplied as an optical tube assembly with a 2.5-inch hexagonal HEX focuser, cradle rings, a finder base and a 99% reflective 2-inch diagonal. A mount and eyepieces are chosen separately.\u003c\/p\u003e\n\u003cp\u003eUnusually, Explore Scientific publishes a complete set of image circle figures for this tube — 50.8mm natively, 76mm with the 3-inch adapter, and separate full-illumination and distortion-free numbers for the flat field adapter and the 0.7 focal reducer. Those figures are reproduced verbatim in the specifications below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers working at medium focal length:\u003c\/strong\u003e 1216mm with a 50.8mm total image circle, rising to 76mm with the 3-inch adapter, covers sensor formats up to and past full frame — the full-frame diagonal is 43.3mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImagers who want a shorter focal length on the same optic:\u003c\/strong\u003e the 0.7 focal reducer takes 1216mm to 851.2mm at f\/5.6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-resolution visual observers:\u003c\/strong\u003e .75 arcsec of stated resolution at f\/8 suits lunar, planetary and double-star work as much as imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers carrying gear to dark sites:\u003c\/strong\u003e the carbon fibre tube is what holds a six-inch triplet to a published 20.5lb; 9.3kg.\u003c\/li\u003e\n\u003cli\u003eThis is a good match if you already own an equatorial mount with real capacity in reserve and a Losmandy-pattern saddle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e152mm air-spaced apochromatic triplet:\u003c\/strong\u003e three elements with air gaps between them, using HOYA FCD1 extra-low dispersion glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1216mm focal length at f\/8:\u003c\/strong\u003e a long-focus ratio for an apochromat, which eases correction across the field and raises image scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon fibre tube:\u003c\/strong\u003e carbon has a very low coefficient of thermal expansion along the fibre direction, so focus position drifts less across a night than it does in an aluminium tube of the same length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5-inch HEX focuser:\u003c\/strong\u003e the hexagonal drawtube resists rotation and flexure that a round drawtube resists only through its pinion and bearings — which matters when a heavy camera train hangs off the back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLosmandy dovetail:\u003c\/strong\u003e the wide D-plate pattern, spreading a 20.5lb tube across a long saddle contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e52″ (1320mm) extended, 41″ (1041mm) retracted:\u003c\/strong\u003e the dew shield accounts for 11 inches of the overall length, and published limiting magnitude is 13 with .75 arcsec of resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied accessories:\u003c\/strong\u003e cradle rings, a finder base and a 99% reflective 2-inch diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn apochromatic triplet brings three wavelengths to a common focus rather than the two an achromatic doublet manages. The extra element, and the extra-low dispersion glass in the stack, is what removes the violet halo a two-element crown-and-flint design leaves around Venus, Sirius and the lunar limb. In imaging terms, red, green and blue channels focus at very nearly the same point, so stars stay tight in all three rather than bloating in one. Air spacing gives the designer six optical surfaces to shape instead of the four a cemented pair offers, and removes the cement layer as a thermal variable in a 152mm lens.\u003c\/p\u003e\n\u003cp\u003eThe published image circle figures describe what the optic delivers to a sensor. The 50.8mm total image circle is the illuminated field the native 2.5-inch train passes, rising to 76mm with the 3-inch adapter. Explore Scientific separates that from the fully illuminated field (36mm with the flat field adapter) and the distortion-free field (40.4mm with the same adapter). With the 0.7 reducer, full illumination is 20.9mm through the 2-inch version and 30.3mm through the 3-inch, with a 46.4mm distortion-free circle either way — so the choice between reducer paths is a question of sensor size. At f\/8 exposures run longer than on a fast astrograph; what the focal ratio buys back is the image scale 1216mm gives.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLong-exposure deep-sky imaging of galaxies, globular clusters and compact nebulae at 1216mm, or 851.2mm with the 0.7 reducer.\u003c\/li\u003e\n\u003cli\u003eHigh-resolution lunar and planetary imaging, where .75 arcsec of stated resolution sets the ceiling.\u003c\/li\u003e\n\u003cli\u003eVisual double-star and planetary observing — a 9mm eyepiece gives 135x, a 5mm gives 243x, a 30mm yields 40.5x for low-power sweeping.\u003c\/li\u003e\n\u003cli\u003eNarrowband imaging from suburban skies, where a long focal ratio and a well corrected field work together.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The tube alone is 20.5lb; 9.3kg before rings, diagonal, finder, camera and filter wheel, so a German equatorial with substantial rated capacity above that is the sensible starting point for imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e Losmandy pattern. Saddles that accept both Losmandy and Vixen plates will take it directly; a Vixen-only saddle needs a plate change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train:\u003c\/strong\u003e the flat field adapter and the 0.7 focal reducer each have their own published circles, listed in the specifications. Sensor diagonal is the number to compare them against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and finder:\u003c\/strong\u003e none supplied, though the 99% reflective 2-inch diagonal and a finder base are. The diagonal takes 2-inch eyepieces directly and 1.25-inch eyepieces through an adapter, and accepts 2-inch threaded filters for visual work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e A mount, a tripod or pier, and eyepieces or a camera complete it. We put packages together regularly — tell us what you already own and we will fill in the gaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a 52-inch tube with the dew shield out,\u003c\/strong\u003e and 41″ retracted. That governs case choice, vehicle space and clearance past the tripod legs. The 20.5lb; 9.3kg figure is the bare tube, so mount capacity is best judged against the loaded weight rather than the published one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific does not publish a backfocus distance for this focuser,\u003c\/strong\u003e so that row is absent from the specifications rather than estimated. Send us the camera, filter wheel and adapters you plan to use and we will work the spacing out with you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool-down is real on a 152mm triplet.\u003c\/strong\u003e A large glass stack takes time to reach ambient temperature, and images taken during that period will not show what the optic can do. This is normal for the aperture rather than a fault, and it is the reason many owners set up early.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 0.7 reducer and flat field adapter are separate items,\u003c\/strong\u003e with their published image circles listed below. We stock the adapters and can advise which path suits your sensor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics need no collimation and no maintenance, so the telescope side is simple. The work is mechanical: lifting a 20.5lb, 41-inch tube onto a saddle is a two-hands job, and it goes more easily with the mount levelled and the counterweights already on the shaft.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sensor size will it cover?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExplore Scientific publishes 50.8mm of total image circle natively and 76mm with the 3-inch adapter, with 36mm of full illumination through the flat field adapter. A full-frame sensor has a 43.3mm diagonal, so the numbers to compare are in the table.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 0.7 focal reducer change?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt takes 1216mm to 851.2mm and f\/8 to f\/5.6, which shortens exposures and widens the field. Full illumination is 20.9mm through the 2-inch version and 30.3mm through the 3-inch, with a 46.4mm distortion-free circle either way.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it want?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne rated comfortably above the loaded weight, with a Losmandy-compatible saddle. Tell us what you own and we will give you a straight answer about whether it will carry this tube for imaging as well as for visual use.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 152mm f\/8 air-spaced triplet apochromat in carbon fibre, 1216mm focal length, .75 arcsec resolution, 20.5lb, on a Losmandy dovetail with a 2.5-inch HEX focuser, and with a 99% reflective 2-inch diagonal, cradle rings and a finder base included. If you would like us to map an imaging train onto your camera before you order, send us the camera and any adapters you already have and we will work the numbers with you.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012606914671,"sku":"TED15208CF-HEX33","price":5543.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ed_152cf_d5d02ceb-4787-459d-b69f-6d0d8c5c71a1_compact__31997.jpg?v=1766548133"},{"product_id":"explore-scientific-ar102-air-spaced-doublet-refractor","title":"Explore Scientific AR102 102mm f\/6.5 Air-Spaced Doublet Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific AR102 is a 102mm air-spaced crown-and-flint achromatic doublet refractor with a published focal length of 663mm at f\/6.5. Explore Scientific gives the optical diameter as 101mm, the limiting magnitude as 12.5 and the resolution as 1.14 arcsec — the three figures that describe how faint this aperture reaches and how close a pair of stars can sit and still separate.\u003c\/p\u003e\n\u003cp\u003eThe tube measures 25.5″ (698mm) with the dew shield extended, and the published weight is 11.5 lbs (5.2 kg). At f\/6.5 this is a short-focus four-inch, built around bright wide-field views at low and medium power rather than long-focus planetary work. The short tube is a large part of why it stays a one-trip instrument.\u003c\/p\u003e\n\u003cp\u003eIt ships as an optical tube assembly with its accessory package: a dual-speed 2-inch Crayford focuser, a 2-inch diagonal with 99% dielectric coatings, an 8x50 finderscope with a quick-release bracket, and a cradle ring assembly carrying a 45mm wide Vixen-style dovetail plate. A mount and eyepieces are chosen separately.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field visual observers:\u003c\/strong\u003e a 101mm objective gathers on the order of 200 times the light a 7mm dark-adapted pupil collects, and at 663mm through a 2-inch focuser the true field stays wide enough for large open clusters and the brighter nebulae to sit inside a single view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who set up and pack down every session:\u003c\/strong\u003e 11.5 lbs and 25.5 inches is a tube most people carry in one hand, and a refractor holds its optical alignment between sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutreach and star-party use:\u003c\/strong\u003e nothing to collimate between events, a quick-release finder, and a dielectric diagonal already in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone with mount capacity to spare:\u003c\/strong\u003e this is a good match if your mount is rated comfortably above the 11.5 lb tube once a diagonal, finder and 2-inch eyepiece are added to it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102mm air-spaced doublet:\u003c\/strong\u003e crown and flint elements separated by an air gap rather than cemented, with a published optical diameter of 101mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e663mm focal length at f\/6.5:\u003c\/strong\u003e a short focal ratio for a four-inch refractor, which is what keeps both the tube length and the true field generous.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimiting magnitude 12.5:\u003c\/strong\u003e the faintest star the aperture is rated to reach.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.14 arcsec resolution:\u003c\/strong\u003e the governing figure for splitting close double stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-speed 2-inch Crayford focuser:\u003c\/strong\u003e coarse and fine motion on the same shaft, which is what makes focus repeatable at higher magnification and under a heavy 2-inch eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch diagonal with 99% dielectric coatings,\u003c\/strong\u003e supplied with the tube rather than sold alongside it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCradle ring assembly with a 45mm wide Vixen-style dovetail:\u003c\/strong\u003e the tube load spreads across two rings instead of one clamp point, and the rings allow the tube to be rotated for eyepiece position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25.5″ (698mm) overall with the dew shield extended,\u003c\/strong\u003e at a published 11.5 lbs (5.2 kg).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn achromatic doublet brings two wavelengths of light to a common focus by pairing a crown element with a flint element. Air-spacing the pair, rather than cementing it, gives the designer two extra optical surfaces to shape and removes the cement layer as a thermal variable when the tube cools down at the start of a session.\u003c\/p\u003e\n\u003cp\u003eAn achromat is not an apochromat, and at f\/6.5 that difference is visible on the brightest targets. Venus, Jupiter, Sirius and the lunar limb will show a violet edge at high magnification. That behaviour belongs to two-element crown-and-flint designs generally rather than to this tube in particular, and it scales with magnification: at the 25x to 60x range this focal length is happiest at, it is not something that intrudes. Observers who want it reduced at high power usually add a minus-violet or fringe-killer filter to the 2-inch diagonal, and we stock those. Observers who want the colour gone rather than reduced are looking at an ED doublet or an apochromatic triplet, which is a different price class and a different tube.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow and medium-power sweeping of open clusters, the brighter nebulae and the larger galaxies.\u003c\/li\u003e\n\u003cli\u003eLunar observing at moderate magnification, where the flat, contrasty field of a refractor shows well.\u003c\/li\u003e\n\u003cli\u003eDouble-star work within the 1.14 arcsec published resolution.\u003c\/li\u003e\n\u003cli\u003ePublic outreach, school sessions and travel, where an 11.5 lb tube that needs no collimation is the practical advantage.\u003c\/li\u003e\n\u003cli\u003eWide-field and solar-system imaging on an equatorial mount rated well above the tube weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight of 11.5 lbs is before the diagonal, finder and eyepiece, so the loaded tube sits higher than that. A mount with 15 lb or more of rated visual capacity is a sensible starting point, and more again for imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the 45mm wide plate follows the Vixen-style pattern, so it drops into a Vixen saddle or a dual Vixen\/Losmandy saddle without an adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e none included. At 663mm, a 30mm eyepiece gives 22x, a 25mm gives 27x, a 15mm gives 44x and a 9mm gives 74x. Divide 663 by the eyepiece focal length in millimetres for any other combination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal and barrel sizes:\u003c\/strong\u003e the supplied 2-inch diagonal takes 2-inch eyepieces, and 1.25-inch eyepieces with a 2-inch to 1.25-inch adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e the 2-inch diagonal accepts 2-inch threaded filters. A minus-violet filter is the usual pairing for high-power lunar and planetary work on a fast achromat; broadband and narrowband nebula filters suit the wide-field work this focal ratio is built around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging:\u003c\/strong\u003e Explore Scientific does not publish a corrected image circle or a backfocus figure for this tube, so we are not going to quote one. Send us the camera and flattener you have in mind and we will work out what fits before you order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount and tripod are needed to use it, and so is at least one eyepiece. We put packages together regularly and can price one against the mount you already own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic, not apochromatic.\u003c\/strong\u003e Colour on the brightest objects at high power is part of the design. A minus-violet filter reduces it, and at the low to medium powers this focal ratio is built for it is not the limiting factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 25.5-inch figure includes the dew shield extended.\u003c\/strong\u003e That is the dimension to measure against a case or a car boot if the tube travels with you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes no corrected image circle and no backfocus figure\u003c\/strong\u003e for the AR102, so those rows are absent from the specification table below rather than estimated. If you are planning an imaging train, we will confirm spacing with you first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. A refractor needs no collimation, so the tube is ready the moment the rings are clamped into the saddle. At 11.5 lbs it lifts onto a mount comfortably, and the finder bracket and diagonal push in and lock with thumbscrews. The only first-night task is aligning the 8x50 finder to the main tube, which takes a few minutes on a distant daytime object.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne rated comfortably above the loaded tube. The bare tube is 11.5 lbs and the diagonal, finder and a 2-inch eyepiece add to that, so around 15 lbs of rated visual capacity is a reasonable floor and more is better for photography. Tell us what you have and we will give you a straight answer on whether it will carry this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 2-inch dielectric diagonal, the 8x50 finderscope and the cradle rings with dovetail are included; eyepieces are chosen separately to suit the 663mm focal length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see colour around bright objects?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn Venus, Jupiter, Sirius and the edge of the Moon at high magnification, yes — that is what a crown-and-flint doublet does. On clusters, nebulae and galaxies at the powers this f\/6.5 tube is built for, it is not something that shows.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102mm f\/6.5 air-spaced achromat at 663mm focal length, supplied as an 11.5 lb tube with a dual-speed 2-inch Crayford focuser, a 99% dielectric 2-inch diagonal, an 8x50 finder and a Vixen-style dovetail — four inches of low-maintenance aperture built for wide, bright fields. If you are matching it to a mount you already own or working out a first pair of eyepieces for 663mm, send us the details and we will sort it out with you.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44012795723887,"sku":"DAR102065-02","price":415.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ar_10211__08092.png?v=1766548214"},{"product_id":"astromaster-90eq-refractor","title":"AstroMaster 90EQ Refractor","description":"\u003ch1\u003e\u003cspan style=\"font-size:20.0pt;mso-bidi-font-size:24.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003eOverview\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003cul type=\"disc\"\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eQuick and easy no-tool setup\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003ePermanently mounted StarPointer\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eErect image optics - Ideal for terrestrial and      astronomical use\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eQuick release dovetail attachment - no tool setup\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eGerman Equatorial mount with Setting circles - to      accurately locate and track sky objects\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eRugged pre-assembled tripod with 1.25\" steel tube      legs - Provides a rigid and stable platform\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eAll coated glass optics for clear, crisp images\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eDeluxe accessory tray for convenient storage of      accessories\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e TheSkyX   First Light Edition  astronomy software with      a 10,000 object database, printable sky maps and 75 enhanced images\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e  \u003ch1\u003e\u003cspan style=\"font-size:20.0pt;mso-bidi-font-size:24.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003eDescription\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; font-family:\" arial new roman\u003eIf you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster Series is for you. Each AstroMaster model is capable of giving correct views of land and sky. \u003cbr\u003e \u003cbr\u003e The AstroMaster Series produce bright, clear images of the Moon and planets. It is easy to see the moons of Jupiter and the rings of Saturn with every one of these fine instruments. For views of the brighter deep space objects like galaxies and nebulae, we recommend the larger aperture and light gathering ability of the Newtonian reflectors.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003ch1\u003e\u003cspan style=\"font-size:20.0pt;mso-bidi-font-size:24.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003eSpecifications\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003ctable class=\"MsoNormalTable\" border=\"0\" cellpadding=\"0\"\u003e  \u003ctbody\u003e\n\u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eOptical   Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003eRefractor\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eAperture   (mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e90   mm (3.54 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFocal   Length\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e1000   mm (39 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Focal   Ratio\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e11\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFocal   Length of Eyepiece 1 (mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;   mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e20   mm (0.79 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Magnification   of Eyepiece 1\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e50   x\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFocal   Length of Eyepiece 2 (mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;   mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e10   mm (0.39 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Magnification   of Eyepiece 2\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e100   x\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFinderscope\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003eBuilt-on   StarPointer\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e  \u003ctr\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eStar   Diagonal\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e   \u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e   \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; 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  font-family:\" arial new roman\u003e2-year   Telescope Warranty\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e   \u003c\/td\u003e  \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; font-family:\" arial new roman\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013224198255,"sku":"21064","price":500.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/21064_AstroMaster_90EQ_1__09811.jpg?v=1766548876"},{"product_id":"explore-scientific-127mm-fcd100-apo","title":"Explore Scientific FCD100 Series 127mm f\/7.5 Air-Spaced Triplet ED APO Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific FCD100 Series 127mm is a five-inch air-spaced triplet apochromatic refractor with a focal length of 952mm at f\/7.5. The objective is built around Hoya FCD100 extra-low-dispersion glass, and Explore Scientific publishes a limiting magnitude of 13 and a resolution of .9 arcsec for it. The tube is aluminium, finished in white, and measures 41.75″ (1060mm) with the dew shield extended, 33.25″ (849mm) with it retracted, over a 130mm outside diameter, at a published 18lb (8.2kg).\u003c\/p\u003e\n\u003cp\u003eIt is supplied as an optical tube assembly. The published package covers a 2.5-inch focuser rated to carry up to 10 lbs of imaging gear, an integrated retractable dew shield, a cradle ring with a carry handle, and a Vixen-style dovetail plate. Enhanced multi-layer coatings are applied to suppress aberrations. No mount and no eyepieces are listed in the vendor's package.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e who want a five-inch refractor with a focuser rated for a real imaging train rather than a token one. The 10 lb focuser rating is the figure that matters when a cooled camera, filter wheel, off-axis guider and rotator are all hanging off the back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power visual observers:\u003c\/strong\u003e at f\/7.5 and 952mm this is a long enough refractor to hold correction on the Moon, planets and double stars, with .9 arcsec of published resolution to work with.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers stepping up from an 80mm or 100mm ED tube\u003c\/strong\u003e who want more aperture without moving to a mirror system and the collimation and cool-down that comes with one. This is a good match if you already run a mount with headroom well above 18 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e127mm air-spaced triplet objective:\u003c\/strong\u003e three elements in the objective cell, separated by air gaps rather than cemented.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHoya FCD100 ED glass:\u003c\/strong\u003e the low-dispersion element in the group, which is what pulls the design into apochromatic territory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e952mm focal length at f\/7.5:\u003c\/strong\u003e a moderate focal ratio for an apochromat, which eases the correction burden on the objective and keeps the field better behaved than a very fast triplet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5-inch focuser rated to 10 lbs:\u003c\/strong\u003e a load rating Explore Scientific publishes specifically for imaging gear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated retractable dew shield:\u003c\/strong\u003e it slides back over the tube, which is where the 8.5-inch difference between the two published tube lengths comes from.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced multi-layer deposition coatings\u003c\/strong\u003e on the optical surfaces, applied to raise transmission and hold contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA two-element achromat brings two wavelengths to a common focus and leaves a visible residual — the secondary spectrum — around bright objects. A three-element apochromat adds a degree of freedom: with one element made of extra-low-dispersion glass, the designer can bring three widely separated wavelengths to essentially the same focal plane instead of two. The practical result is that the violet and deep-red ends of the spectrum land close enough to the visual focus that colour fringing on Venus, Jupiter and the lunar limb stops being a feature of the view.\u003c\/p\u003e\n\u003cp\u003eFCD100 is the ED glass type in this objective. Its job is dispersion control: it bends the different wavelengths by more similar amounts than ordinary crown or flint glass does, so the two mating elements have less residual colour to correct. Air spacing rather than cementing gives the design six optical surfaces to shape instead of four, and it removes a cement layer as a thermal variable in a five-inch lens — a real consideration in a lens this size cooling down through an evening.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific does not publish a corrected image circle or a backfocus distance for this tube, so those rows are absent from the specifications below rather than estimated. If you are assembling an imaging train, send us the camera and flattener you have in mind and we will work the spacing out with you.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography on a suitably rated equatorial mount, with a flattener matched to your sensor.\u003c\/li\u003e\n\u003cli\u003eHigh-magnification visual work on the Moon, planets and double stars, where .9 arcsec of published resolution sets the ceiling.\u003c\/li\u003e\n\u003cli\u003eLunar and planetary imaging with a focal extender ahead of a planetary camera.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight is 18lb (8.2kg) bare, before a diagonal, finder, camera or eyepiece, so a mount rated comfortably above that is the sensible starting point — and more again for imaging, where tracking accuracy rather than raw capacity is the constraint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the supplied plate is Vixen-style, so it seats in any Vixen saddle and in the dual-format saddles that take both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and diagonal:\u003c\/strong\u003e not listed in the published package. The 2.5-inch focuser takes 2-inch accessories with the appropriate adapter, and 2-inch is the format most observers build around at this focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 952mm ÷ eyepiece focal length. A 30mm gives 32x, a 20mm gives 48x, a 9mm gives 106x, a 5mm gives 190x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal extenders:\u003c\/strong\u003e a 2x extender takes the system to 1904mm at f\/15, which is planetary imaging territory in steady air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train:\u003c\/strong\u003e the 10 lb focuser rating covers most cooled-camera trains, and we can go through yours item by item if you would like a second opinion on the load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount, a tripod, a diagonal and at least one eyepiece are separate items. We put packages like this together regularly — tell us how you plan to use it and we will price the whole thing out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a 41.75-inch tube with the dew shield extended.\u003c\/strong\u003e That length is worth measuring against your case, your car and your observing space before ordering; the shield retracts to bring the tube down to 33.25 inches for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe published 18lb is the bare tube.\u003c\/strong\u003e Loaded with a diagonal, finder and a 2-inch eyepiece, or with a full imaging train, it sits meaningfully higher, which is why mount headroom matters more than a bare-minimum rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so we quote neither. Send us your camera and we will tell you what we can establish about the spacing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics need nothing from you — a refractor holds its collimation, so the tube is ready the moment it is on the mount. The work is physical rather than technical: 18lb and nearly 42 inches is a two-handed lift onto a saddle, and it goes more smoothly with the mount already levelled and the counterweights roughly positioned first.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne with capacity well above the 18lb bare tube weight, since the diagonal, finder and eyepiece or camera all add to it. For imaging, the useful figure is usually around half a mount's visual rating. Tell us what you own and we will give you an honest read on whether it will carry this tube.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see false colour?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn air-spaced triplet using FCD100 ED glass is built specifically to remove it. On the brightest targets at very high power some residual is inherent to any refracting design, but it is not the limiting factor in this telescope the way it is in an achromat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces or a diagonal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNeither is listed in the vendor's published package. The tube arrives with its 2.5-inch focuser, dew shield, cradle ring and Vixen dovetail. We can supply a diagonal and a starting eyepiece set alongside it.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 127mm f\/7.5 air-spaced triplet apochromat on FCD100 ED glass, 952mm focal length, with a 2.5-inch focuser rated to 10 lbs of imaging gear, a retractable dew shield, a cradle ring with carry handle and a Vixen dovetail — five inches of low-maintenance refractor aperture that serves visual and photographic use equally. If you are matching it to a mount or planning the imaging train, send us the details and we will work through the fit with you before you order.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013369589871,"sku":"FCD100-127075-02","price":3464.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FCD100_127mm_1__75589.jpg?v=1766551589"},{"product_id":"es-80mm-fcd100-apo","title":"Explore Scientific ED80-FCD100 80mm f\/6 Air-Spaced Triplet Refractor with 0.8x Focal Reducer","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED80-FCD100 is an 80mm air-spaced apochromatic triplet refractor with a native focal length of 480mm at f\/6, supplied here together with the ES-FR0.8x focal reducer. The centre element is HOYA FCD100 extra-low-dispersion glass, and the tube carries a 2.5-inch hexagonal focuser sized around camera loads rather than eyepieces alone.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific publishes a limiting magnitude of 12 and a resolution of 1.45 arcsec for the 80mm objective. The tube is 18.5″ (475mm) long with the dew shield extended and 15″ (381mm) with it retracted, 85mm in outside diameter, and 7.5 lb (3.4 kg) on its own. A Vixen-pattern dovetail is fitted.\u003c\/p\u003e\n\u003cp\u003eWith the two-element 0.8x reducer in the train, the published 480mm becomes 384mm and f\/6 becomes f\/4.8 — a short, fast imaging system that reverts to a 480mm f\/6 visual refractor when the reducer comes out.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imagers:\u003c\/strong\u003e 384mm at f\/4.8 with the reducer fitted frames large emission regions and open clusters that a longer instrument crops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who value colour correction:\u003c\/strong\u003e an air-spaced triplet using FCD100 ED glass is aimed at bringing three wavelengths to a common focus rather than two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone with a modest mount:\u003c\/strong\u003e at 7.5 lb (3.4 kg) bare, this tube asks far less of a mount than a six-inch refractor does. This is a good match if you already own a mount in the 20–30 lb class and want to use most of its capacity on payload rather than on the tube itself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm air-spaced triplet objective:\u003c\/strong\u003e three elements with air gaps between them, one of them HOYA FCD100 extra-low-dispersion glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e480mm focal length at f\/6:\u003c\/strong\u003e short enough for wide fields, long enough that a 6mm eyepiece still reaches 80x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5-inch hexagonal focuser:\u003c\/strong\u003e the hexagonal drawtube form is used to resist the rotational flex that a heavy camera train imposes on a round drawtube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eES-FR0.8x focal reducer included:\u003c\/strong\u003e two elements, 2-inch diameter, 0.8x reduction, with a 42mm T2 camera adapter plate and a barrel threaded for standard 2-inch filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e 18.5″ (475mm) extended, 15″ (381mm) retracted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e85mm tube diameter and 7.5 lb (3.4 kg) tube weight,\u003c\/strong\u003e on a Vixen-pattern dovetail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied package:\u003c\/strong\u003e Explore Scientific lists the refractor, the 0.8x focal reducer, a 2-inch diagonal, extension tubes, a finder scope base, the dew shield and a dust cover.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA doublet achromat brings two wavelengths to a common focus. A triplet adds a third element and, with the right glass, brings a third wavelength in as well — which is what shortens the residual colour error that shows as a violet halo around bright stars and along the lunar limb. The FCD100 element is the one doing that work: extra-low-dispersion glass spreads wavelengths less as they pass through it, so the design has less colour to correct in the first place.\u003c\/p\u003e\n\u003cp\u003eAir spacing matters here as much as glass choice. Cementing elements together saves two optical surfaces but locks the spacing to whatever the cement layer does under temperature change, and it puts an adhesive in the light path of the objective. An air-spaced triplet gives the designer six surfaces to shape instead of four and leaves the spacings mechanical rather than chemical. The cost is one more pair of surfaces to coat and a slightly longer thermal settling time at the start of a session.\u003c\/p\u003e\n\u003cp\u003eThe 0.8x reducer is a two-element group that shortens the effective focal length from 480mm to 384mm and, because aperture is unchanged at 80mm, drops the focal ratio from f\/6 to f\/4.8. Faster focal ratio means more signal per pixel per unit time, a wider field on the same sensor, and tighter tolerance on the spacing between the reducer and the sensor. Explore Scientific publishes the reducer's element count, diameter, reduction factor and its 42mm T2 thread, and specifies a 2-inch filter thread in the barrel; they do not publish a backfocus distance or a corrected image circle for this combination, so neither figure appears in the table below.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field deep-sky imaging at 384mm f\/4.8 with the reducer in place.\u003c\/li\u003e\n\u003cli\u003eVisual observing at 480mm f\/6 — open clusters, large nebulae, the Milky Way star fields, lunar and planetary at moderate power.\u003c\/li\u003e\n\u003cli\u003eTravel and dark-site trips, where 15″ retracted and 7.5 lb make the difference between packing it and leaving it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The 7.5 lb (3.4 kg) tube weight is before the diagonal, finder, camera and any guiding hardware, so the loaded figure runs higher — a mount rated at 20 lb or more leaves useful headroom for imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the Vixen-pattern bar drops into any Vixen saddle, and into dual-fit saddles that take both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera attachment:\u003c\/strong\u003e the reducer's adapter plate carries a 42mm thread for a T2 ring, so a T-ring for your camera body completes the connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e the reducer barrel is threaded for standard 2-inch filters, which places light-pollution and narrowband filters ahead of the camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e none supplied. At 480mm a 40mm eyepiece gives 12x, a 20mm gives 24x, a 14mm gives 34x and a 5.5mm gives 87x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacing for imaging:\u003c\/strong\u003e Explore Scientific does not publish the reducer-to-sensor distance, so we are not going to quote one. Send us the camera and any filter drawer you plan to use and we will work the spacing out with you before you order.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube with a reducer, not a complete telescope.\u003c\/strong\u003e A mount, a tripod and at least one eyepiece or a camera are needed to put it to work. We can quote the whole package in one go if that is easier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes no backfocus or corrected image circle for the ES-FR0.8x on this tube.\u003c\/strong\u003e Those rows are absent from the specifications rather than estimated. If you are building an imaging train, tell us the camera and we will put the question to our Explore Scientific rep.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn 80mm aperture has a ceiling.\u003c\/strong\u003e The published resolution is 1.45 arcsec and the limiting magnitude is 12; high-power planetary detail is not what an 80mm f\/6 is optimised for. It earns its keep across wide fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe telescope itself is straightforward. A refractor holds its alignment, so there is no collimation to perform — it is ready as soon as it is on the mount and the dew shield is extended. The part that takes thought is the imaging train: the reducer, any filter drawer and the camera need to sit at the correct spacing from one another, and that is a one-time measurement rather than a nightly task. At 7.5 lb it is a one-handed lift onto a saddle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 0.8x reducer actually change?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt takes the native 480mm f\/6 down to 384mm f\/4.8. The field on a given sensor gets wider and the system collects more signal per pixel in the same exposure time. For visual use the reducer comes out and the scope runs at its native 480mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne rated comfortably above the loaded weight. The tube is 7.5 lb bare, and a camera, guide scope and diagonal push that up. For imaging, a mount in the 20–30 lb class gives the settling behaviour that short exposures depend on. Tell us what you have and we will give you a straight answer about whether it will carry this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. A 2-inch diagonal, extension tubes, a finder base, the dew shield and a dust cover are included; eyepieces are chosen to suit the observing you do.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an 80mm f\/6 air-spaced triplet with HOYA FCD100 glass, a 2.5-inch hexagonal focuser and a Vixen dovetail, bundled with the two-element ES-FR0.8x reducer that turns 480mm f\/6 into 384mm f\/4.8 — a 7.5 lb tube that images wide and observes cleanly. If you are matching it to a mount or a camera you already own, send us the models and we will map out the spacing and the fit with you.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013369655407,"sku":"FCD100-0806-02","price":1087.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/explore_scientific_fcd100_8006_01__25335.jpg?v=1766551596"},{"product_id":"explore-scientific-102mm-fcd100","title":"Explore Scientific ED102 FCD-100 Series 102mm f\/7 Air-Spaced Triplet Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED102 FCD-100 Series is a 102mm air-spaced triplet apochromatic refractor with a focal length of 714mm working at f\/7. The centre element is HOYA FCD100 extra-low-dispersion glass, and every air-to-glass surface carries Explore Scientific's EMD (Enhanced Multi-Layer Deposition) coating. For this aperture Explore Scientific publishes a limiting magnitude of 12.5 and a resolution of 1.14 arcsec.\u003c\/p\u003e\n\u003cp\u003eThe tube measures 30.5″ (774mm) with the dew shield extended and 23.75″ (603mm) with it retracted, over a 119mm outside diameter, at a published weight of 10.9 lb (4.94 kg). It carries a 2.5-inch focuser rated by Explore Scientific for imaging loads to 10 lb, and rides on a 45mm wide V-block dovetail of the Vixen pattern.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field imagers:\u003c\/strong\u003e 714mm at f\/7 puts the larger emission nebulae, the Andromeda core and the bigger open clusters inside a single APS-C frame, and the triplet holds star colour to the corners of the illuminated field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observers who want colour-free high power:\u003c\/strong\u003e 1.14 arcsec of published resolution is enough for the Cassini division, the Jovian festoons and tight double pairs, with none of the violet halo an achromat shows on those targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravelling observers:\u003c\/strong\u003e a 23.75-inch retracted tube at 10.9 lb fits luggage and small cases in a way a six-inch instrument does not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers building a second imaging rig:\u003c\/strong\u003e this is a good match if you already own a mount rated comfortably above 11 lb and want a refractor that can front an imaging train today and guide a larger scope later.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102mm air-spaced triplet:\u003c\/strong\u003e three elements in a single cell with air gaps rather than cement, built around a HOYA FCD100 extra-low-dispersion centre element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e714mm focal length at f\/7:\u003c\/strong\u003e short enough for wide-field framing, long enough that eyepieces in the 5mm to 9mm range reach usable planetary powers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMD enhanced multi-layer coatings\u003c\/strong\u003e on the air-to-glass surfaces, which is where transmission and stray-light control are won or lost in a three-element objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5-inch focuser rated to 10 lb:\u003c\/strong\u003e Explore Scientific specifies the load capacity, which is the figure that matters once a camera, filter wheel and off-axis guider are hanging off the back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetracting dew shield:\u003c\/strong\u003e 30.5″ (774mm) extended, 23.75″ (603mm) retracted, so the transport length is nearly seven inches shorter than the working length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e119mm tube diameter\u003c\/strong\u003e with a 45mm wide V-block dovetail similar to the Vixen standard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA triplet apochromat uses three elements to bring three wavelengths to a common focus, where a doublet manages two. The practical result is that the secondary spectrum — the residual colour error left over after the primary correction — drops to a level where it stops being visible on bright stars and stops bloating blue channels in a stacked image. The FCD100 glass in the centre element is a fluoro-crown type with very low dispersion, which is what makes that three-wavelength correction achievable in a cell only 102mm across.\u003c\/p\u003e\n\u003cp\u003eAir spacing rather than cementing gives the designer additional surfaces to work with and removes the cement layer as a thermal variable. It also means the objective cools as three separate pieces of glass, so a triplet takes longer to reach thermal equilibrium than a doublet of the same aperture. In practice that is twenty to forty minutes outside before the highest powers settle, which is worth knowing when planning a session.\u003c\/p\u003e\n\u003cp\u003eAt f\/7 the native field is not flat. Refractor objectives produce a curved focal surface, and across a large sensor that shows as stars stretching at the corners while the centre is sharp. A dedicated field flattener corrects it. Explore Scientific does not publish a corrected image circle or a backfocus figure for this tube, so no number is quoted here — we can work out the spacing with you against the camera and flattener you have in mind.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field deep-sky imaging of nebulae, large clusters and the brighter galaxies at 714mm.\u003c\/li\u003e\n\u003cli\u003eHigh-power visual work on the Moon, planets and double stars, where the 1.14 arcsec resolution figure governs.\u003c\/li\u003e\n\u003cli\u003eLunar and solar-system imaging with a focal extender to raise the effective focal length.\u003c\/li\u003e\n\u003cli\u003eTravel and dark-site trips where the 23.75-inch retracted length matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not part of the published package. At 10.9 lb bare, a mount rated at 25 lb or more gives the margin imaging wants once a camera and accessories are added.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the 45mm wide V-block seats in Vixen-style saddles, including dual-fit saddles that take both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e at 714mm, a 30mm eyepiece gives 24x, a 20mm gives 36x, a 9mm gives 79x and a 5mm gives 143x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal extenders:\u003c\/strong\u003e a 2x extender takes the system to 1428mm at f\/14 for lunar and planetary imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train:\u003c\/strong\u003e the 2.5-inch focuser is specified to 10 lb, which accommodates most cooled CMOS cameras with a filter wheel and off-axis guider.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e needed for a flat field across an APS-C or larger sensor. Send us the camera and we will work through the spacing with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e A mount, tripod and at least one eyepiece are separate items, and Explore Scientific does not publish an itemised box-contents list for this tube. We can check what is in the carton with our rep before you order, and put a package together if that is simpler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes two weight figures for this model.\u003c\/strong\u003e The current spec sheet for item FCD100-10207-02 lists 10.9 lb (4.94 kg); an earlier sheet for the aluminium FCD100-10207-01 listed 12 lb (5.4 kg). Both are shown here as published rather than averaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA triplet needs cooling time.\u003c\/strong\u003e Three separate elements reach ambient temperature more slowly than two, so the sharpest high-power views arrive some time after the tube goes outside rather than immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so those rows are absent from the specifications rather than estimated. If you are planning an imaging train, tell us the camera and flattener and we will map the spacing out with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optics need nothing — a refractor holds its collimation, so there is no alignment step before observing. The work is mounting it: 10.9 lb onto a levelled saddle, dovetail clamped, dew shield pulled out, and then a cooling period before the highest powers look their best.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount does it want?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSomething rated well above 10.9 lb once a diagonal, finder and eyepiece or an imaging train are added. For visual work a 20 lb mount is comfortable; for imaging, 25 lb or more gives the settling margin that guiding depends on. Tell us what you have and we will give you a straight answer on the fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does FCD100 glass actually do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is a low-dispersion fluoro-crown glass that spreads wavelengths less than ordinary optical glass. Used as the centre element of a triplet, it allows three wavelengths to be brought to a common focus, which is what removes the violet halo an achromatic doublet shows on Venus, Sirius and the lunar limb.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it show colour fringing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn apochromatic triplet is designed to bring that below the visible threshold. On the very brightest targets at very high power a trace of residual colour is inherent to any refracting design, but it is a different order of magnitude from what a two-element achromat produces.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102mm f\/7 air-spaced triplet on HOYA FCD100 glass, 714mm focal length, 10.9 lb, with a 2.5-inch focuser rated to 10 lb and a Vixen-pattern dovetail — a four-inch apochromat short enough to travel and capable enough to image with. If you are matching it to a mount or an existing camera, send us the details and we will work out the fit with you before you order.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Explore Scientific Field Flattener f\/5 to f\/7","offer_id":44013369720943,"sku":"FCD100-10207-02","price":1835.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/explore_scientific_fcd100_10207_01_102mm__86741.jpg?v=1766551603"},{"product_id":"celestron-omni-xlt-120-telescope","title":"Celestron Omni XLT 120 Telescope","description":"\u003ch1\u003e\u003cspan style=\"font-size: 10pt; font-family: Arial, sans-serif;\"\u003eOVERVIEW OF CELESTRON OMNI XLT 120\u003c\/span\u003e\u003c\/h1\u003e  \u003cul type=\"disc\"\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eHigh quality optics start with each lens and(or) mirror      being hand selected so only the finest grade of optical glass is used\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eStarBright XLT coatings provide maximized light      transmission\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e25 mm multi-coated eyepiece - 20 mm eye relief, 50° FOV\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e1.25\" star diagonal\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eCG-4 German Equatorial mount with setting circles and      slow motion controls - to accurately locate and track sky objects\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eBall bearings in both axis of the mount for smooth      performance\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eHeavy-duty pre-assembled stainless steel tripod featuring      1.75\" legs, accessory tray and bubble level\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e  \u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;      mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003eEasy no-tool setup\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e  \u003ch1\u003e\u003cspan style=\"font-size: 10pt; font-family: Arial, sans-serif;\"\u003eDESCRIPTION\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; font-family:\" arial new roman\u003eCelestron Omni XLT series features the stable platform of the CG-4 mount and high quality optics. Using aspheric shaping technology in conjunction with hand-figuring the optics, the Omni XLT presents an image with virtually no spherical aberration. We also added our famous StarBright XLT coating system to further enhance light transmission.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003ch1\u003e\u003cspan style=\"font-size: 10pt; font-family: Arial, sans-serif;\"\u003eSPECIFICATIONS \u003c\/span\u003e\u003c\/h1\u003e\u003ch1\u003e\u003c\/h1\u003e\u003ctable class=\"MsoNormalTable\" border=\"0\" cellpadding=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eOptical   Design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003eRefractor\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eAperture   (mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e120   mm (4.72 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFocal   Length\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; 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  font-family:\" arial new roman\u003e8.33\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFocal   Length of Eyepiece 1 (mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;   mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e25   mm (0.98 in)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Magnification   of Eyepiece 1\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; 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  font-family:\" arial new roman\u003e1.16   arc seconds\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Resolution   (Dawes)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e0.97   arc seconds\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eFormula:Light   Gathering Power (Compared to human eye)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e294   x\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eApparent   Field of View\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e1.25   °\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eLinear   Field of View (@1000 yds)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;   mso-bidi-font-size:12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e66   ft (20 m)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eOptical   Coatings\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003eStarBright   XLT\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eOptical   Tube Length\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e40   in (1016 mm)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eOptical   Tube Weight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e12.5   lbs (5.67 kg)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eTripod   Weight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e12.5   lbs (5.67 kg)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eWeight   of Counterweights\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e7   lbs (3.2 kg) and 4 lbs (1.8 kg)\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:   12.0pt;font-family:\" arial new roman\u003eWarranty\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:.75pt .75pt .75pt .75pt\"\u003e\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;   font-family:\" arial new roman\u003e2-year   Telescope Warranty\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt; font-family:\" arial new roman\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013369884783,"sku":"21090","price":1181.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/21090_Omni_XLT_120_Telescope_1__97856.jpg?v=1766551630"},{"product_id":"102mm-fcd100-air-spaced-triplet-ed-apo-in-carbon-fiber","title":"Explore Scientific FCD-100 Series 102mm Carbon Fiber Air-Spaced Triplet ED Apo Refractor","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific FCD-100 Series 102mm carbon fiber apochromat is a four-inch refractor built around an air-spaced triplet objective made with FCD-100 extra-low-dispersion glass, carried in a carbon fiber optical tube. It is catalogued as item FCD100-10207-CF-01 — the carbon fiber version of the 102mm FCD-100 apochromat, distinct from the aluminium-tube 102mm which carries its own separate item number.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific does not currently publish a specification table for this carbon fiber configuration. Focal length, focal ratio, tube length, focuser travel, dovetail pattern, backfocus and weight are therefore absent from the specifications below rather than estimated. The figures belonging to the aluminium-tube 102mm are not carried across to this listing, because that is a different model and its numbers are not ours to lend. What the model designation itself establishes is the part that governs the optics: 102mm of clear aperture, three elements in an air-spaced triplet, FCD-100 ED glass, and a carbon fiber tube.\u003c\/p\u003e\n\u003cp\u003eAperture on its own settles a good deal. A 102mm objective gathers roughly 212 times the light of a fully dark-adapted 7mm eye pupil, and Dawes' criterion for a 102mm aperture works out to about 1.14 arcseconds — the separation at which a tight double star begins to resolve into two points. Both are calculations from the aperture figure rather than published specifications.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who want colour-free high power in a four-inch tube:\u003c\/strong\u003e a triplet apochromat is designed to bring three wavelengths to a common focus, which is what removes the violet halo that a two-element achromat leaves around Venus, Jupiter and the lunar limb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers:\u003c\/strong\u003e the combination of a triplet objective and a carbon fiber tube targets the two things that spoil a long exposure — colour spread across the star field, and focus drifting as the night cools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople who already own a capable equatorial or alt-az mount.\u003c\/strong\u003e This is a good match if you have a mount with capacity to spare and want a four-inch apochromat to put on it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102mm clear aperture:\u003c\/strong\u003e four inches of light grasp, with a theoretical resolution near 1.14 arcseconds by Dawes' criterion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced triplet objective:\u003c\/strong\u003e three elements with air gaps between them rather than cement, giving the designer six optical surfaces to shape instead of the four a cemented pair offers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCD-100 extra-low-dispersion glass:\u003c\/strong\u003e an ED glass type chosen for its low dispersion, which is the property that lets a triplet close the secondary spectrum rather than merely reduce it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon fiber optical tube:\u003c\/strong\u003e carbon composite has a far lower coefficient of thermal expansion than aluminium, so the distance between objective and focal plane changes less as the ambient temperature falls through the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished data is limited:\u003c\/strong\u003e the model designation is the whole of what Explore Scientific states publicly for this configuration, so the rest of the table reads \"Not published by vendor\" instead of carrying a borrowed figure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAn apochromatic triplet works on the same principle as an achromatic doublet, taken a step further. A doublet pairs a crown element with a flint element so that two wavelengths — typically in the red and the blue — land on the same focal plane, leaving a residual violet focus error known as the secondary spectrum. A triplet adds a third element, usually with an extra-low-dispersion glass such as FCD-100 in the middle of the stack, and brings a third wavelength onto that plane as well. The residual colour error drops by roughly an order of magnitude, which is why bright stars in an apochromat show as clean points rather than as points wearing a purple ring.\u003c\/p\u003e\n\u003cp\u003eAir-spacing the elements rather than cementing them serves two ends. It gives the optical designer additional free surfaces to shape and additional degrees of freedom in balancing spherical aberration against colour correction. It also removes the cement layer as a thermal variable: in a four-inch objective, a bonded interface between glasses of differing expansion rates is one more thing that has to settle as the lens cools toward ambient.\u003c\/p\u003e\n\u003cp\u003eThe carbon fiber tube is doing thermal work of its own. Every refractor has a fixed distance from the objective to the focal plane, and every tube material changes length as it cools. Aluminium moves enough over a twenty-degree evening drop to be visible in a critically focused image at high magnification or on a small imaging pixel scale. Carbon composite moves far less, so a focus position set at the start of an imaging run holds closer to true through the session. The same stiffness-to-weight advantage also keeps flexure between the objective cell and the focuser lower for a given tube mass. What the design cannot settle without a published focal length is the focal ratio, the field any eyepiece will deliver, or the illuminated image circle at the camera — and those we would rather leave blank than guess at.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-power visual observing of the Moon, planets and double stars, where colour correction is the limiting factor rather than aperture.\u003c\/li\u003e\n\u003cli\u003eDeep-sky imaging, where a triplet objective keeps star colour tight across the frame.\u003c\/li\u003e\n\u003cli\u003eLong imaging sessions through a falling temperature, where a low-expansion tube reduces the number of refocus stops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e the tube weight is not published for this configuration, so a mount recommendation from us would be a guess. We can obtain the figure from Explore Scientific and match it against the mount you own before you order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the pattern supplied with the carbon fiber version is not stated on the vendor page. Vixen-style and Losmandy-style saddles are the two common standards, and we can tell you which one applies once we have it in writing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and magnification:\u003c\/strong\u003e magnification is telescope focal length divided by eyepiece focal length, so without a published focal length for this tube we are not going to quote example magnifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flatteners and reducers:\u003c\/strong\u003e a triplet apochromat corrects colour, not field curvature, so imaging across an APS-C or full-frame sensor generally calls for a flattener matched to the focal length. That match depends on figures the vendor has not published here, so we would sort the spacing out with you rather than sell a flattener blind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes no specification table for the carbon fiber 102mm.\u003c\/strong\u003e Focal length, focal ratio, focuser type, tube length, dovetail and weight are all absent from their page for this item number. Rather than lift them from the aluminium-tube model, we have left those rows blank — and if any one of them is the deciding factor for you, we will put the question to our Explore Scientific rep and come back with an answer in writing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe in-the-box list is also unpublished.\u003c\/strong\u003e Whether a diagonal, finder or rings ship with this configuration is not stated, so we will confirm exactly what is in the carton with the distributor before anything leaves here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon fiber reduces focus drift rather than eliminating it.\u003c\/strong\u003e Long imaging runs still benefit from periodic refocusing or an autofocus routine, and we stock motorised focusers that handle that automatically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. A refractor holds its collimation from the factory, so there is nothing to align before first light — the tube goes into the saddle, the diagonal and eyepiece go into the focuser, and it is ready. The only real work is balancing the mount once the tube is on it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat magnification will it give?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThat depends on the focal length, and Explore Scientific has not published one for this configuration. We would rather ask them than quote a number we cannot stand behind, so if the answer matters to your eyepiece plan, ask us and we will get it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does FCD-100 glass actually do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is an extra-low-dispersion optical glass. Dispersion is the tendency of glass to bend different wavelengths by different amounts, which is the root cause of chromatic aberration. A low-dispersion element in the middle of a triplet lets the design bring red, green and blue essentially to the same focus instead of leaving violet behind.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy a carbon fiber tube instead of aluminium?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThermal stability and stiffness for the mass. Carbon composite changes length far less than aluminium as the night cools, which keeps focus closer to where you set it, and it is rigid without being heavy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I image with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is built for it — a triplet apochromat on a low-expansion tube is a deep-sky imaging configuration. The accessories that go with it (flattener, spacers, filter drawer) depend on the focal length and backfocus, which is where we can help once those figures are in hand.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 102mm air-spaced triplet apochromat using FCD-100 ED glass in a carbon fiber tube — four inches of three-colour correction on a low-expansion tube, with a specification table Explore Scientific has not yet published for this particular item number. If there is a figure you need before committing, send us the question and we will get it from Explore Scientific and pass on exactly what they tell us.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013376045167,"sku":"FCD100-10207-CF-01","price":2632.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FCD100_102ED_CF_Burst__17456.jpg?v=1766552108"},{"product_id":"127mm-fcd100-air-spaced-triplet-ed-apo-in-carbon-fiber","title":"Explore Scientific FCD100 Series ED127 127mm f\/7.5 Carbon Fiber Air-Spaced Triplet APO Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific ED127 FCD100 Series is a 127mm air-spaced triplet apochromatic refractor with a focal length of 952mm at f\/7.5, built into a carbon fiber optical tube. The centre element of the triplet is HOYA FCD100 extra-low-dispersion glass, and the front and rear elements are air-spaced against it rather than cemented. Explore Scientific publishes a limiting magnitude of 13 and a resolution figure of .9 arcsec for this aperture.\u003c\/p\u003e\n\u003cp\u003eIt is supplied as an optical tube assembly with a 2.5″ HEX focuser rated to carry 10 lb of imaging equipment, and a Vixen-pattern dovetail. The tube measures 41.75″ (1060mm) with the dew shield extended and 33.25″ (849mm) with it retracted, 145mm across, and weighs 14 lb (6.4 kg). No mount and no eyepieces are included.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers:\u003c\/strong\u003e 952mm at f\/7.5 is a long-enough focal length for galaxies and small nebulae without becoming an autoguiding problem, and the 2.5″ HEX focuser is specified to hold 10 lb of camera, filter wheel and rotator without sagging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observers who want colour-free high power:\u003c\/strong\u003e an air-spaced triplet using FCD100 glass is built to bring three wavelengths to a common focus, which is what removes the violet halo an achromat shows on Venus, Jupiter and the lunar limb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who travel to dark sites:\u003c\/strong\u003e this is a good match if you want five inches of apochromatic aperture that one person can carry to the car in a single trip. The carbon fiber tube is the reason the published weight is 14 lb rather than what a comparable aluminium tube would read.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOwners of mid-capacity equatorial mounts:\u003c\/strong\u003e this is a good match if your mount is rated comfortably above the loaded weight of a 14 lb tube plus rings, diagonal, finder and camera train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e127mm air-spaced triplet:\u003c\/strong\u003e three elements with air gaps between them, rather than a cemented pair, giving the designer additional surfaces to work with and removing cement as a thermal variable in a five-inch lens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHOYA FCD100 ED glass:\u003c\/strong\u003e a high-grade extra-low-dispersion type used for the centre element, chosen for how tightly it brings the red, green and blue focal points together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e952mm focal length at f\/7.5:\u003c\/strong\u003e a moderate focal ratio that keeps the image scale useful for galaxies and planetary detail while remaining tractable for imaging exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.5″ HEX focuser:\u003c\/strong\u003e rated by Explore Scientific to support up to 10 lb of imaging equipment, so a camera, filter wheel and off-axis guider can ride on it together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon fiber optical tube:\u003c\/strong\u003e stiffness per unit weight is the point — it is what allows a 127mm triplet to be published at 14 lb (6.4 kg).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetracting dew shield:\u003c\/strong\u003e 41.75″ (1060mm) extended, 33.25″ (849mm) retracted, which is the figure that matters for a case or a back seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVixen-pattern dovetail\u003c\/strong\u003e for mounting, on a tube 145mm in outside diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA doublet achromat brings two wavelengths to a common focus and leaves a residual violet fringe on the brightest targets. A triplet apochromat adds a third element so that three widely separated wavelengths land together, and the residual colour error drops to the point where it stops being visible at normal magnifications. The glass type in the centre element governs how well that works: extra-low-dispersion glass bends the different colours by more nearly the same amount, so less correction has to be forced by the surface curvatures. FCD100 is one of the higher-performing ED types HOYA produces, and it is what this tube is named for.\u003c\/p\u003e\n\u003cp\u003eAir-spacing the elements, rather than cementing them, matters more as lenses get larger. A cemented joint in a 127mm lens is a thick layer of adhesive that expands and contracts with temperature at a different rate to the glass around it. Separating the elements removes that layer, adds two more optical surfaces the designer can shape, and lets the lens reach thermal equilibrium more predictably on a cooling night.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific does not publish a corrected image circle or a backfocus distance for this tube, so those rows are absent from the specifications rather than estimated. If you are planning an imaging train around a specific camera and flattener, send us the parts you have in mind and we will work the spacing out with you before you order.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography of galaxies, globular clusters and small to medium emission nebulae at 952mm.\u003c\/li\u003e\n\u003cli\u003eHigh-power visual observing of the Moon, planets and planetary detail where colour correction is the limiting factor.\u003c\/li\u003e\n\u003cli\u003eDouble-star work near the published .9 arcsec resolution.\u003c\/li\u003e\n\u003cli\u003ePortable dark-site sessions where the 14 lb tube weight and 33.25″ retracted length are what make the trip practical.\u003c\/li\u003e\n\u003cli\u003eLunar and planetary imaging with a focal extender in the train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e not included. The published tube weight of 14 lb is before rings, dovetail hardware, diagonal, finder and camera. For imaging, a mount rated at roughly twice the loaded tube weight is the usual working rule; for visual use the margin can be smaller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e Vixen pattern, which fits Vixen saddles and dual-fit saddles that take both Vixen and Losmandy plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e not included. At 952mm, a 30mm eyepiece gives 32x, a 20mm gives 48x, a 9mm gives 106x and a 5mm gives 190x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e the 2.5″ focuser takes 2-inch diagonals with the appropriate adapter. We stock dielectric 2-inch diagonals if one is not already in your case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train:\u003c\/strong\u003e a field flattener is the normal companion for deep-sky work with any refractor. Since no corrected image circle is published, we will confirm the flattener match against your camera rather than quote a figure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly, not a complete telescope.\u003c\/strong\u003e A mount, a tripod and at least one eyepiece are needed alongside it. We can quote the whole package together if that is simpler — just tell us what you already own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific has published two different outer-diameter figures for this tube\u003c\/strong\u003e — 130mm on the spec sheet supplied with the product and 145mm on the current product page. If the exact figure decides whether a set of rings or a case will fit, ask us and we will confirm it with our Explore Scientific rep before you commit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 41.75″ length is with the dew shield extended.\u003c\/strong\u003e Retracted it is 33.25″, which is the number to measure a case or a vehicle against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrected image circle or backfocus figure is published\u003c\/strong\u003e for this tube, so those rows are left out below rather than filled with an estimate. Send us your camera and intended flattener and we will work out the spacing with you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 10 lb focuser rating is a real ceiling.\u003c\/strong\u003e A camera, filter wheel, off-axis guider and rotator add up quickly, and staying inside that figure is what keeps the focuser drawtube square to the optical axis. We can total up a proposed train for you if you are close to the limit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe telescope itself is simple — a refractor holds its collimation, so once the tube is in the rings and on the mount it is ready. The work is in the mount and the balance: at 14 lb plus accessories it is a comfortable one-person lift, and it goes on easiest with the mount already levelled and the counterweights roughly set.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount will carry it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor visual use, a mount rated well above the 14 lb tube weight once rings, diagonal, finder and eyepiece are added. For imaging, more headroom again, because tracking accuracy degrades long before a mount reaches its stated capacity. Tell us which mount you own and we will give you a straight answer on whether it is enough.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill I see colour fringing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn air-spaced triplet using FCD100 ED glass is designed specifically to remove it. On Venus, Sirius and the lunar limb at high power an apochromat of this class shows a clean, neutral image where a two-element achromat would show violet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I image with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes — that is a large part of what the 2.5″ HEX focuser and its 10 lb capacity are for. A field flattener is the usual addition for deep-sky work, and an equatorial mount with guiding is the other half of the system.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a 127mm f\/7.5 air-spaced triplet apochromat with HOYA FCD100 ED glass, a 2.5″ HEX focuser rated to 10 lb, and a carbon fiber tube that keeps the whole assembly at 14 lb with a Vixen dovetail — five inches of apochromatic aperture on a mount that does not have to be enormous. If you are matching it to a mount or building an imaging train around it, send us the parts list and we will confirm the fit with you first.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013377781871,"sku":"FCD100-127075-CF-01","price":3880.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FCD100_127ED_CF__51061.jpg?v=1766552312"},{"product_id":"william-optics-gran-turismo-71-apo-refractor-with-0-8x-reducer","title":"William Optics Gran Turismo 71 APO Refractor with 0.8x Reducer and Camera rotator RED","description":"\u003cp style=\"margin: 0px 0px 1rem; padding: 0px; color: #333333; font-family: Roboto, Arial,;\"\u003eThe William Optics GT71 Triplet Air-Spaced APOL Telescope in Gold with 0.8x Reducer and CAA (Camera Angle Adjuster) \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e71mm aperture f\/5.9 imaging refractor telescope\u003c\/li\u003e\n\u003cli\u003etriplet w\/ FPL-53 glass for apochromatic performance\u003c\/li\u003e\n\u003cli\u003ecovers full frame imaging circle (44mm)\u003c\/li\u003e\n\u003cli\u003e2.5\" dual speed WO R\u0026amp; P focuser\u003c\/li\u003e\n\u003cli\u003ewhite with gold trim\u003c\/li\u003e\n\u003cli\u003eweight is 2.2 kg (4.85 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003eThis package comes with:\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e2 mounting rings\u003c\/li\u003e\n\u003cli\u003edust cover with built-in Bahtinov mask\u003c\/li\u003e\n\u003cli\u003eFlat6AIII field flattener\u003c\/li\u003e\n\u003cli\u003eadjustable\/retractable dew shield\u003c\/li\u003e\n\u003cli\u003evixen-style dovetail plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"description\" class=\"data item content\" role=\"tabpanel\" data-role=\"content\" aria-labelledby=\"tab-label-description\" aria-hidden=\"false\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-1.jpg\" alt=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-2.jpg\" alt=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-3.jpg\" alt=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-4.jpg\" alt=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-5.jpg\" alt=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71-6.jpg\" alt=\"\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"tab-label-additional\" class=\"data item title\" tabindex=\"0\" role=\"tab\" aria-labeledby=\"tab-label-additional-title\" data-role=\"collapsible\" data-collapsible=\"true\" aria-controls=\"additional\" aria-selected=\"false\" aria-expanded=\"false\"\u003e\u003ca id=\"tab-label-additional-title\" class=\"data switch\" tabindex=\"-1\" href=\"https:\/\/williamoptics.com\/products\/telescope\/gran-turismo\/all-new-gran-turismo-71-apo-refractor#additional\" data-toggle=\"switch\"\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv id=\"additional\" class=\"data item content\" role=\"tabpanel\" data-role=\"content\" aria-labelledby=\"tab-label-additional\" aria-hidden=\"true\"\u003e\n\u003cdiv class=\"additional-attributes-wrapper table-wrapper\"\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"data table additional-attributes\"\u003e\n\u003ccaption class=\"table-caption\"\u003eMore Information\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"col label\" scope=\"row\"\u003eSpecification\u003c\/th\u003e\n\u003ctd class=\"col data\" data-th=\"Specification\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71_FLAT6AIII-Spot_Diagram.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/williamoptics.com\/media\/wysiwyg\/Product\/A-F71GTII\/GT71_FLAT6AIII-Longitudinal_Aberration.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin: 0px; padding: 0px; color: #333333; font-family: Roboto, Arial,;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; font-weight: bold;\"\u003e2.5\" R\u0026amp;P Focuser\u003c\/span\u003e\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• Extra-smooth 360 deg. rotatable 2.5\" R\u0026amp;P focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting!\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• Comes with two locking screws on angled positions for heavy load applications.\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• Large aluminum knob with installed thermometer.\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; font-weight: bold;\"\u003eSimply Beautiful Finish\u003c\/span\u003e\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, dewshield cap.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0px; padding: 0px; color: #333333; font-family: Roboto, Arial,;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px;\"\u003eSlidebase Handle\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• Top quality anodizing.\u003cbr style=\"margin: 0px; padding: 0px;\"\u003e• Very compact for carrying on flights.\u003c\/span\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44013380108399,"sku":"A-F71GTII-RD-AP","price":1653.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2023-04-07_114814__13025.jpg?v=1766552414"},{"product_id":"william-optics-gran-turismo-81-mark-iv-red","title":"William Optics Gran Turismo 81 Mark IV - Red","description":"\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003eThe William Optics Gran Turismo Mark IV is Optically Unbeatable\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eTriplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eExtremely sharp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eExcellent color correction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eEach lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eThis F\/5.9 lens is ideal for astrophotography\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003eSimply Beautiful Finish\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003ePure William Optics quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, dewshield cap\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eTop quality anodizing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eVery compact for carrying on flights\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003eAttention to Details\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003e2\" \u0026amp; 1.25\" adapter included\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eAnti-marring brass compression rings\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003eR\u0026amp;P FOCUSER\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003e2.5” R\u0026amp;P Ultra robust focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting! Heavy duty: perfect for your accessories.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial; color: rgb(51, 51, 51);\"\u003eSIMPLY BEAUTIFUL FINISH\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003ePure William Optics quality fit and finish powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dew shield, dew shield cap. \u003c\/span\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eTop quality anodizing.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eVery compact for carrying on flights.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003eATTENTION TO DETAILS\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003e2\" \u0026amp; 1.25\" adapter included in the price.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eAnti-marring brass compression rings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003e90mm mounting rings are optional.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eThough you will never need it, you have a 2-year warranty from WO and the certainty that we will be there to assist you even beyond that, if you need!\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial; font-weight: bold;\"\u003ePACKAGE CONTENTS:\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003eMounting Rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eGT81 OTA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eCNC Carry Handle Bar\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eDovetail Plate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003e2.5” R\u0026amp;P Focuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eBahtinov Mask Cover\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: Arial;\"\u003eSoft Carry Case\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 10px; padding: 0px; box-sizing: border-box; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(51, 51, 51);\"\u003eTwo-year, no fuss warranty and constant customer service!\u003c\/span\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Flattener  Flat6AIII","offer_id":44013380272239,"sku":"A-F81GTIV-RD","price":2229.98,"currency_code":"CAD","in_stock":true},{"title":"Nikon 48mm T-Ring","offer_id":44013380305007,"sku":"A-F81GTIV-RD","price":2033.99,"currency_code":"CAD","in_stock":true},{"title":"Canon 48mm T-Ring","offer_id":44013380337775,"sku":"A-F81GTIV-RD","price":2033.99,"currency_code":"CAD","in_stock":true},{"title":"Sony 48mm T-Ring","offer_id":44013380370543,"sku":"A-F81GTIV-RD","price":2034.99,"currency_code":"CAD","in_stock":true},{"title":"Fuji T-Ring","offer_id":44013380403311,"sku":"A-F81GTIV-RD","price":2038.99,"currency_code":"CAD","in_stock":true},{"title":"Pentax T-Ring","offer_id":44013380436079,"sku":"A-F81GTIV-RD","price":2034.99,"currency_code":"CAD","in_stock":true},{"title":"Camera Angle Rotator","offer_id":44013380468847,"sku":"A-F81GTIV-RD","price":2169.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/gt81_1__30949.jpg?v=1766552417"},{"product_id":"skywatcher-esprit-80ed-apo-triplet","title":"Skywatcher Esprit 80ED APO Triplet","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eSkywatcher Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp style=\"box-sizing: border-box;\"\u003eDesigned with the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box;\"\u003eWith their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box;\"\u003eAll Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eMain Features: \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Premium optical materials \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Short focal length and full frame corrected focal plane \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Excellent field flatness \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Precision linear power focuser is standard \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Metallic high-transmission lens coatings \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Light-baffled optical systems \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Telescope tube attachment hardware \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Zero detectable Colour Fringing even on Bright Objects\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Knife-edge Baffled Optical System\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eThis is a final sale item.  Brand new with full manufacture warranty.\u003c\/strong\u003e\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44013469401199,"sku":"S11400","price":3200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/en_telescope_caty01358550342__78737.jpg?v=1766554085"},{"product_id":"skywatcher-esprit-100ed-apo-triplet","title":"Skywatcher Esprit 100ED APO Triplet","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eSkywatcher Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eDesigned with the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eWith their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eAll Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eMain Features: \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Premium optical materials \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Short focal length and full frame corrected focal plane \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Excellent field flatness \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Precision linear power focuser is standard \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Metallic high-transmission lens coatings \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Light-baffled optical systems \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Telescope tube attachment hardware \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Zero detectable Colour Fringing even on Bright Objects\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Knife-edge Baffled Optical System\u003c\/span\u003e\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44013469433967,"sku":"S11410","price":4460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/esprit100-left-profile-600x600__26983.jpg?v=1766554093"},{"product_id":"skywatcher-esprit-120ed-apo-triplet","title":"Skywatcher Esprit 120ED APO Triplet","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eSkywatcher Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eDesigned with the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eWith their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eAll Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eMain Features: \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Premium optical materials \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Short focal length and full frame corrected focal plane \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Excellent field flatness \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Precision linear power focuser is standard \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Metallic high-transmission lens coatings \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Light-baffled optical systems \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Telescope tube attachment hardware \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Zero detectable Colour Fringing even on Bright Objects\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Knife-edge Baffled Optical System\u003c\/span\u003e\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44013469466735,"sku":"S11420","price":5790.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/esprit120-front-left-600x600__96622.jpg?v=1766554100"},{"product_id":"skywatcher-esprit-150ed-apo-triplet","title":"Skywatcher Esprit 150ED APO Triplet","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eSkywatcher Esprit 80ED, 100ED, 120ED and 150ED Super APO refractors have a doublet field flattener to get a flat field and minimize aberration and distortion. Their wide 48mm opener ensures a larger and clearer aperture and also extremely minimized halation. Connect the triplet and doublet field flattener with a high precision thin thread to keep the optical axis perpendicular to the image. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eDesigned with the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eWith their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; font-family: \" open sans arial sans-serif margin: font-size:\u003eAll Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eMain Features: \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Premium optical materials \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Short focal length and full frame corrected focal plane \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Excellent field flatness \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Precision linear power focuser is standard \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Metallic high-transmission lens coatings \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Light-baffled optical systems \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Telescope tube attachment hardware \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Zero detectable Colour Fringing even on Bright Objects\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e- Knife-edge Baffled Optical System\u003c\/span\u003e\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44013469499503,"sku":"S11430","price":11470.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/esprit150-front-left-600x600__13534.jpg?v=1766554109"},{"product_id":"celestron-inspire-100az-refractor-telescope","title":"Celestron Inspire 100AZ Refractor Telescope","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe Celestron Inspire 100AZ is a short refractor telescope perfect for terrestrial and celestial viewing on the go. T\u003cspan style=\"box-sizing: inherit;\"\u003ehe Celestron Inspire 100AZ features the largest aperture in the Inspire family line and its short tube offers a wider field of view perfectly suited for \u003c\/span\u003eviewing the planets, moon, star clusters and brighter deep sky objects like the Orion Nebula and Andromeda Galaxy at night and with the erect image star diagonal makes the optical tube ideal for using as a spotting scope during the day.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eSetting up the telescope is a breeze and will have you observing in no time. Even on your first time out, you can assemble the telescope and its accessories in just a few minutes. The adjustable tripod legs allow you to customize the telescope’s height or place it on raised surfaces like a picnic table. The total telescope kit is perfect for impromptu observing sessions or transporting wherever life’s adventures take you.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eManual Alt-Azimuth telescope\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eNavigate the sky with a panning handle Alt-Az control with clutch for smooth and accurate pointing. Move the clutch in an up\/down, left\/right fashion to track your object in the eyepiece.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eAccessories Included\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe Celestron Inspire 100AZ comes with two eyepieces (20mm and 10mm), a 90° erect image diagonal, an integrated smartphone adapter, StarPointer™ Pro red dot finderscope, and a red LED flashlight.  The two eyepieces offer different magnifications to view your intended object. The erect image diagonal allows for right-side-up viewing ideal for terrestrial subjects but can also be used for celestial objects. The \u003cspan style=\"box-sizing: inherit;\"\u003eStarPointer™ Pro red dot finderscope\u003c\/span\u003e will help you quickly center an object in your eyepiece for easier observing. Illuminate your accessory tray with the built-in red LED flashlight. The flashlight can easily be removed from the mount to provide red light where you need it most.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eSmartphone Adapter\u003cspan style=\"box-sizing: inherit;\"\u003e \u003c\/span\u003e\u003c\/span\u003e– Image celestial or terrestrial objects with this smartphone adapter! With its light, rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 45mm or smaller. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon, planets, and terrestrial targets like birds and wildlife.  This smartphone adapter installs easily by clamping over the top of an eyepiece.  The smartphone is held in position with the help of bungee cords that securely lock your phone in place. While the vast majority of smartphones can be used with the case on, some very large and\/or bulky phone cases (such as folio style cases) may need to be removed for the phone to fit in the adapter.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eStarry Night Software\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eDownload Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond. \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003e\u003ca href=\"https:\/\/www.youtube.com\/watch?v=wYigoKfbIVU%20\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"box-sizing: inherit; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: rgb(253, 130, 4); transition: color 0.3s cubic-bezier(0.55, 0.085, 0.68, 0.53) 0s;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Sky_and_Telescope_Play_Video_button_large_7123c356-ade0-41c3-95d7-c8e948de144f.png?v=1766556560\" alt=\"\" style=\"box-sizing: inherit; border-style: none; max-width: 100%;\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013569572975,"sku":"22403","price":528.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22403_Inspire_100AZ_2_570x3803x__22433.jpg?v=1766556562"},{"product_id":"celestron-starsense-explorer-dx-102az-smartphone-app-enabled-refractor-telescope","title":"Celestron StarSense Explorer DX 102AZ Smartphone App-enabled Refractor Telescope","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Celestron StarSense Explorer DX 102AZ is a 102 mm f\/6.5 refractor on a manual altazimuth mount and aluminium tripod, paired with a smartphone dock and Celestron's StarSense Explorer app. The app reads the actual star field through your phone's camera and matches it against its own catalogue to work out where the tube is pointed, then shows on-screen arrows that walk you to a target and turn the bullseye green once it is centred in the eyepiece. With 660 mm of focal length, fully XLT-coated optics and an erect-image diagonal, it is the refractor in the range — nothing to collimate, and a correctly-oriented view that works by day as well as at night.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want a telescope that needs no optical maintenance and is ready the moment you carry it out, and you would rather spend the evening observing than learning to star-hop first. A refractor suits an observer who values crisp lunar and planetary views, double stars and the brighter deep-sky objects, and who would rather not think about mirror alignment. The erect-image diagonal makes it a genuinely dual-purpose instrument, so it earns its keep on landscapes and wildlife between clear nights.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102 mm aperture at f\/6.5:\u003c\/strong\u003e 660 mm focal length, with a highest useful magnification of 240x, a lowest useful magnification of 15x and a limiting stellar magnitude of 12.5.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully XLT-coated glass optics:\u003c\/strong\u003e Celestron's premium coating package applied throughout the light path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo eyepieces supplied:\u003c\/strong\u003e a 25mm at 26x and a 10mm at 66x, so there is a wide finding view and a closer look in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErect-image 90° diagonal (1.25\"):\u003c\/strong\u003e gives a right-way-up, right-way-round view, which suits terrestrial daytime use as well as astronomy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-axis geared slow-motion controls:\u003c\/strong\u003e fine adjustment on both axes, which is what makes following an object at 240x practical on a manual mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNothing to collimate:\u003c\/strong\u003e a refractor's objective is fixed at the factory, so there is no alignment routine before or during a session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium tripod to 1244.6 mm (49\")\u003c\/strong\u003e with an accessory tray, supplied preassembled with the mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14.2 lb (6.44 kg) complete:\u003c\/strong\u003e a 5 lb optical tube on a light, full-height tripod.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe optical tube is a 102 mm refractor at f\/6.5 in an aluminium tube measuring 812.8 mm long by 118 mm in diameter (32\" x 4.64\"). Celestron publishes its resolving power as 1.37 arcseconds by the Rayleigh criterion and 1.14 arcseconds by the Dawes limit, with 212 times the light-gathering power of the unaided eye.\u003c\/p\u003e\u003cp\u003eThe practical difference between this and the reflectors in the range is maintenance and contrast character. A refractor has no secondary mirror and no central obstruction, which gives high-contrast lunar and planetary images for the aperture, and its optics stay aligned permanently. The trade is aperture for money — at 102 mm it gathers less light than the 130 mm reflector at a similar price. f\/6.5 across 660 mm keeps the tube manageable at 32 inches while leaving room for useful magnification with a short eyepiece.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eLunar observing in detail and planetary observing at up to 240x, where a refractor's contrast shows. Double-star work near the 1.14 arcsecond Dawes limit. Open clusters, the brighter nebulae and the Andromeda Galaxy at a 12.5 limiting magnitude. Guided touring with the app's list of currently visible objects and its audio descriptions. Daytime terrestrial viewing — landscapes, wildlife, distant detail — using the supplied erect-image diagonal. Outreach and family observing, where the app lets anyone find something themselves.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEyepieces:\u003c\/strong\u003e the supplied erect-image diagonal takes 1.25\" eyepieces. The 25mm and 10mm cover 26x and 66x; a 6mm or a zoom is the usual next addition for planetary work, with a 240x ceiling above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSolar:\u003c\/strong\u003e we stock the Celestron \u003ca href=\"\/products\/starsense-explorer-dx-102az-and-omni-xlt-az-102-eclipsmart-solar-filter\"\u003eEclipSmart Solar Filter for the StarSense Explorer DX 102AZ\u003c\/a\u003e, which is made for this aperture and fits over the front of the tube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSmartphone:\u003c\/strong\u003e the StarSense Explorer app runs on Android 12 and later and on iOS 18 and newer, including iPhone XR and newer. Celestron maintains the full device list at \u003ca href=\"https:\/\/starsenseexplorer.simcur.com\/\" target=\"_blank\" rel=\"noopener\"\u003estarsenseexplorer.simcur.com\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMount:\u003c\/strong\u003e the tube ships on its own manual altazimuth mount and tripod, preassembled. It is a visual mount with no tracking drive and no provision for adding one.\u003c\/p\u003e\u003cp\u003eIf you are unsure whether your phone will run the app, send us the model and we will check it against Celestron's list before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eThe app needs real starlight to work.\u003c\/strong\u003e It cannot orient itself in daylight and wants roughly an hour after sunset before there is enough star detail to match on. Cloud cover, haze, a bright Moon and heavy light pollution all reduce what it can lock onto. The telescope itself works by day; the app's sky-matching does not.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt shows tonight's sky only.\u003c\/strong\u003e There is no date or time control in the app, so it plans the session you are about to have rather than one next month.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTracking is manual.\u003c\/strong\u003e Objects drift across the field as the Earth turns, and the dual-axis slow-motion controls are how you follow them — a turn of a knob rather than nudging the tube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e102 mm sets the deep-sky reach.\u003c\/strong\u003e At a 12.5 limiting magnitude, galaxies beyond the brightest few are faint. This aperture rewards the Moon, the planets, double stars and clusters. If deep-sky is your main interest, the DX 130AZ reflector gathers 345x the unaided eye against this telescope's 212x — tell us what you want to observe and we will tell you which fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSolar observing needs a purpose-made filter\u003c\/strong\u003e — the EclipSmart filter linked above is the matched one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTwo-year Celestron warranty.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo, and less so than any reflector in this range. The mount and tripod arrive preassembled, the tube drops on, and there is no collimation to do — ever. Aligning the phone to the optics is a short procedure at the start of each session and the app's tutorials walk through it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it during the day?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The supplied diagonal gives an erect, correctly-oriented image, which is what makes terrestrial viewing usable. The StarSense app's sky-matching only works at night, so daytime use is conventional aim-and-look.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the app need a subscription?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. The app is unlocked for use with the telescope, with nothing further to pay.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich phones does it work with?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAndroid 12 and later, and iOS 18 and newer including iPhone XR and newer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRefractor or reflector — which should I pick?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe refractor gives sharper, higher-contrast views per inch of aperture, never needs collimating, and works by day. The reflector gives you more aperture for the same money, so it reaches fainter objects. At these two price points the DX 102AZ is the low-maintenance, high-contrast choice and the DX 130AZ is the light-gathering one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is built as a visual instrument. The mount is manual with no tracking drive, so long-exposure imaging is outside what it does. Short-exposure lunar and planetary work held up to the eyepiece is practical.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 102 mm f\/6.5 XLT-coated refractor with app-guided pointing, dual-axis slow-motion controls and an erect-image diagonal: 660 mm of focal length, a 240x useful ceiling, 14.2 lb complete, nothing to collimate, and a view that works by day as well as at night.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013575045231,"sku":"22460","price":681.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22460_StarSense_Explorer_DX_102_01_570x3803x__57519.jpg?v=1766556715"},{"product_id":"celestron-starsense-explorer-lt-80az-smartphone-app-enabled-refractor-telescope","title":"Celestron StarSense Explorer™ LT 80AZ Smartphone App-enabled Refractor Telescope","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eCelestron has reinvented the manual telescope with StarSense Explorer—the first telescope that uses your smartphone to analyze the night sky and calculate its position in real time. Celestron StarSense Explorer is ideal for beginners thanks to the app’s user-friendly interface and detailed tutorials. It’s like having your own personal tour guide of the night sky.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eDock, Launch, Explore\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eLeave complicated star charts, imprecise planetarium apps, and computerized mounts behind. With Celestron StarSense Explorer, locating objects has never been easier, faster, or more accurate. Within minutes of setting up the telescope, you’ll be navigating the sky with confidence. Simply place your phone in the unique StarSense dock and launch the StarSense Explorer app. After aligning your phone to the telescope’s optics (a quick, 2-minute procedure), Celestron StarSense Explorer generates a list of celestial objects currently visible. Make your selection and arrows appear onscreen, guiding you as you to move the telescope. When the object is ready to view, the bullseye turns green.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eSmartphone Compatibility\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eCelestron StarSense Explorer works with most modern smartphones, including iPhone 6 and up and most devices running Android 7.1.2 or later manufactured since 2016. For a complete compatibility list, \u003ca style=\"box-sizing: inherit; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; color: #fd8204; transition: color 0.3s cubic-bezier(0.55, 0.085, 0.68, 0.53) 0s;\" href=\"https:\/\/starsenseexplorer.simcur.com\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eclick here\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003ePatent-Pending StarSense Sky Recognition Technology\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eCelestron StarSense Explorer uses patent-pending technology and your smartphone to determine exactly where the telescope is pointed in the night sky. A Lost in Space Algorithm (LISA), like the ones satellites use in orbit to correctly reorient themselves, helps the app match star patterns it detects overhead to its internal database.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eWhile other astronomy apps may claim that they can help you find objects, they rely exclusively on the phone’s gyros and accelerometers, which aren’t as accurate as LISA technology. No other app can accurately tell you when your target is visible in the eyepiece.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eSturdy Altazimuth Mount\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eCelestron StarSense Explorer LT’s simple altazimuth mount makes it easy to move the telescope to find your target. An \u003cspan style=\"box-sizing: inherit;\"\u003ealtitude slow motion adjustment with a sliding rod\u003c\/span\u003e helps you fine tune the telescope’s pointing position and follow targets as they appear to drift across the night sky. It’s all anchored by an adjustable, full-height tripod.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eDazzling Views with High Quality Optics\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eYou can expect sharp, bright views through this 80mm refractor. Fully coated glass optics provide increased light transmission, enhancing details in celestial objects. The telescope also includes a 90-degree erect image diagonal, so you can use it during the day to view birds, wildlife, landscapes, and more.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003ePerfect for the City or Dark Sky Sites\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eEven if you live in a light polluted city location, Celestron StarSense Explorer is advanced enough to be able to pick out Jupiter, Saturn, Venus, the Orion Nebula, double stars, and a few more of the most famous celestial objects.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eBut if you can take the telescope to an even slightly darker location, more objects will become visible. The entire telescope kit weighs just 9.2 pounds, so it’s perfectly portable and easy to bring on your next camping trip or to a remote observing site.\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003e\u003cspan style=\"box-sizing: inherit; font-weight: bolder;\"\u003eEverything You Need to Observe Immediately\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: #333e48;\"\u003eWhen you unbox your new Celestron StarSense Explorer LT, you’ll find:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003e80mm refractor optical tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003eStarSense dock for your smartphone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003eLow powered (25mm) and high powered (10mm) eyepiece\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003e2x Barlow lens to double the power of each eyepiece\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003e90-degree erect image diagonal\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003eStarPointer red dot finderscope, perfect for using the telescope during the day or without the StarSense Explorer app\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003eAltazimuth mount with slow motion control rod\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #333e48;\" open=\"\" sans=\"\" arial=\"\" helvetica=\"\" sans-serif=\"\" font-size:=\"\"\u003eFull-height tripod with an accessory tray to keep you organized\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013575864431,"sku":"22451","price":347.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22451_StarSense_Explorer_LT_80_01_570x3803x__42156.jpg?v=1766556730"},{"product_id":"starfield-optics-ed102-fpl-53-apo","title":"Starfield Optics ED102 FPL-53 APO","description":"\u003ch1 typography=\"HeadingDelta\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED0\" data-field-id=\"cards.headline\" data-field-route=\"\/card\/0\" data-promoted-from=\"4\" data-order=\"0\" class=\"x-el x-el-h1 c1-ay c1-2 c1-2w c1-2x c1-az c1-3q c1-3r c1-37 c1-38 c1-2j c1-5l c1-b0 c1-4q c1-b1 c1-b2 c1-b3 c1-b4 x-d-ux x-d-aid x-d-field-id x-d-field-route x-d-promoted-from x-d-order\" style=\"box-sizing: inherit; font-family: Raleway, arial, sans-serif; overflow-wrap: break-word; margin: 0px 0px 24px; max-width: 100%; letter-spacing: 1.5px; line-height: 1.25; font-size: 19px; background-color: rgb(255, 255, 255);\"\u003eED102 f\/7 714mm APO\u003c\/h1\u003e\u003cdiv typography=\"BodyAlpha\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED0\" data-field-id=\"cards.description\" data-field-route=\"\/card\/0\" class=\"x-el x-el-p c1-1 c1-2 c1-2w c1-2x c1-6q c1-37 c1-38 c1-b5 c1-b6 c1-b7 c1-b8 c1-b9 c1-ba c1-bb c1-bc c1-bd c1-be c1-bf c1-bg c1-bh c1-bi c1-bj c1-bk c1-bl c1-bm c1-bn c1-bo c1-bp c1-bq c1-br c1-bs c1-bt c1-bu c1-bv c1-bw c1-b c1-20 c1-c c1-40 c1-d c1-6r c1-e c1-f c1-g x-d-ux x-d-aid x-d-field-id x-d-field-route x-rt\" style=\"box-sizing: inherit; font-family: Helvetica, arial, sans-serif; font-size: 16px; overflow-wrap: break-word; margin-top: 0px; margin-bottom: 24px; line-height: 1.5; max-width: 100%; background-color: rgb(255, 255, 255);\"\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-c2 c1-c3 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eThe Starfield ED102 APO doublet offers incredible performance in both imaging an visual astronomy. Using FPL53 (Ohara, Japan) and a lanthanum element, chromatic correction rivals more expensive triplet telescopes with the advantage of faster cool down time. Taken to the highest magnification, images and views remain colour-free. This fast refractor for lunar and solar system observation and demanding astrophotography applications.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-c2 c1-c3 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e\u003cbr style=\"box-sizing: inherit; clear: both;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-c2 c1-c3 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eThis 714mm f\/7 offers high performance that you would typically see in higher priced triplet telescopes. \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Helvetica, arial, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ch4 typography=\"HeadingDelta\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-field-id=\"cards.headline\" data-field-route=\"\/card\/1\" class=\"x-el x-el-h4 c1-c4 c1-2 c1-2w c1-2x c1-c5 c1-3q c1-3r c1-37 c1-38 c1-2j c1-5j c1-c6 c1-6o c1-c7 c1-c8 c1-c9 c1-ca x-d-ux x-d-aid x-d-field-id x-d-field-route\" style=\"box-sizing: inherit; font-family: Raleway, arial, sans-serif; overflow-wrap: break-word; margin: 0px 0px 24px; max-width: 100%; letter-spacing: 1.5px; line-height: 1.25; font-size: 19px; background-color: rgb(255, 255, 255);\"\u003eHigh quality build and features \u003c\/h4\u003e\n\u003cdiv typography=\"BodyAlpha\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED1\" data-field-id=\"cards.description\" data-field-route=\"\/card\/1\" class=\"x-el x-el-p c1-1 c1-2 c1-2w c1-2x c1-6p c1-37 c1-38 c1-b4 c1-b5 c1-b6 c1-b7 c1-b8 c1-b9 c1-ba c1-bb c1-bc c1-bd c1-be c1-bf c1-bg c1-bh c1-bi c1-bj c1-bk c1-bl c1-bm c1-bn c1-bo c1-bp c1-bq c1-br c1-bs c1-bt c1-bu c1-bv c1-b c1-20 c1-c c1-40 c1-d c1-6q c1-e c1-f c1-g x-d-ux x-d-aid x-d-field-id x-d-field-route x-rt\" style=\"box-sizing: inherit; font-family: Helvetica, arial, sans-serif; font-size: 16px; overflow-wrap: break-word; margin-top: 0px; line-height: 1.5; max-width: 100%; background-color: rgb(255, 255, 255); margin-bottom: 0px !important;\"\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003c\/p\u003e\n\u003cul style=\"box-sizing: inherit; padding-left: 1.3em; margin: auto 32px;\"\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e2.5\" two speed rack and pinion focuser, with ball bearings, that is also fully rotatable rotation. \u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eOptional motor focusers can easily be installed. \u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSelf centering rotational lock. No setscrews to come loose. \u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSupport for heavy camera loads and accessories.\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSupports 2\" and 1.25\" eyepiece accessories\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eHD CNC tube rings and Vixen style dovetail bar\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eRetractable dew shield retractable for transport. With dew shield retracted the total length is 26”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\n\u003ch4 typography=\"HeadingDelta\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED2\" data-field-id=\"cards.headline\" data-field-route=\"\/card\/2\" class=\"x-el x-el-h4 c1-c4 c1-2 c1-2w c1-2x c1-c5 c1-3q c1-3r c1-37 c1-38 c1-2j c1-5j c1-c6 c1-6o c1-c7 c1-c8 c1-c9 c1-ca x-d-ux x-d-aid x-d-field-id x-d-field-route\" style=\"box-sizing: inherit; font-family: Raleway, arial, sans-serif; overflow-wrap: break-word; margin: 0px 0px 24px; max-width: 100%; letter-spacing: 1.5px; line-height: 1.25; font-size: 19px;\"\u003eDoublet Apo 102 mm f\/7 - FPL53 \/ Lanthanum Objective\u003c\/h4\u003e\n\u003cdiv typography=\"BodyAlpha\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED2\" data-field-id=\"cards.description\" data-field-route=\"\/card\/2\" class=\"x-el x-el-p c1-1 c1-2 c1-2w c1-2x c1-6p c1-37 c1-38 c1-b4 c1-b5 c1-b6 c1-b7 c1-b8 c1-b9 c1-ba c1-bb c1-bc c1-bd c1-be c1-bf c1-bg c1-bh c1-bi c1-bj c1-bk c1-bl c1-bm c1-bn c1-bo c1-bp c1-bq c1-br c1-bs c1-bt c1-bu c1-bv c1-b c1-20 c1-c c1-40 c1-d c1-6q c1-e c1-f c1-g x-d-ux x-d-aid x-d-field-id x-d-field-route x-rt\" style=\"box-sizing: inherit; overflow-wrap: break-word; margin-top: 0px; line-height: 1.5; max-width: 100%; margin-bottom: 0px !important;\"\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003c\/p\u003e\n\u003cul style=\"box-sizing: inherit; padding-left: 1.3em; margin: auto 32px;\"\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eAperture 102 mm \/ focal length 714 mm \/ focal ratio f\/7\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eAdjustable doublet in temperature compensated cell\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eImage free of chromatic error due to \"Extra-Low-Dispersion\" FPL53 apo element from Ohara (Japan) and Lanthanum element. Achieving better chromatic correction than comparable apochromats with doublet lenses with lower quality glass.\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eShorter cooling time than with triplet lenses, thus quicker operation possible\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eInternally baffled to prevent stray light and get the contrast you would expect from performance refractors.\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e2.5\" two speed rack and pinion focuser that is also fully rotatable rotation. Optional Motor focusers can easily be installed. Self centering rotational lock. No setscrews to come loose. Support for heavy camera loads and accessories.\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSupports 2\" and 1.25\" eyepiece accessories\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eHD CNC tube rings and Vixen style dovetail bar\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-c1 c1-c2 c1-b c1-c c1-d c1-e c1-f c1-g x-d-ux\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eRetractable dew shield retractable for transport. With dew shield retracted the total length is 26”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Yes \/ Yes","offer_id":44013581172847,"sku":"_SF-ED102-01","price":2195.0,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ No","offer_id":44013581205615,"sku":"_SF-ED102-01","price":1935.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ Yes","offer_id":44013581238383,"sku":"_SF-ED102-01","price":1785.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ No","offer_id":44013581271151,"sku":"_SF-ED102-01","price":1525.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ED102_1__70990.jpg?v=1766556896"},{"product_id":"sharpstar-94edph","title":"Sharpstar 94EDPH","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\" color:black=\"\" mso-color-alt:windowtext=\"\" background:white=\"\"\u003eDiscontinued\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\" color:black=\"\" mso-color-alt:windowtext=\"\" background:white=\"\"\u003eThe brand new 94EDPH is the third type of this Sharpstar EDPH family. Its aperture size is 94mm and the focal length is 517mm, thus the focal ratio is f\/5.5. 94EDPH is designed with triplet air-spaced APO lens structure, including two pieces of ED(extra-low dispersion) glass, which empowers the astragraph to achieve more effective aberration amendment thus to produce more accurate images. With its innate compactness, fashionable appearance, and above all, superb quality, Sharpstar 94EDPH can be applied to both high-end sky-observation and sophisticated astrophotograph.\u003c\/span\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\"\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eSharpstar 94EDPH shares the same reducer with its sibling, 76EDPH, which may greatly relieve the inconvenience and troublesome in swapping the 76 to 94.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eThe reducer can reduce the original focal ratio to f\/4.5, supporting full-frame imaging, opening up for our customers more possibilities in exploring the universe.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eSharpstar 94EDPH must be an ideal choice, worthy of consideration, if you are looking for a large-aperture, fast-focal-ratio, quality and lightweight APO refractive telescope.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan arial=\"\" sans-serif=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Yes \/ Yes \/ Yes","offer_id":44013649920111,"sku":"94EDPH","price":2844.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ Yes \/ No","offer_id":44013649952879,"sku":"94EDPH","price":2809.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ No \/ Yes","offer_id":44013649985647,"sku":"94EDPH","price":2809.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ No \/ No","offer_id":44013650018415,"sku":"94EDPH","price":2774.99,"currency_code":"CAD","in_stock":true},{"title":"No \/ Yes \/ Yes","offer_id":44013650051183,"sku":"94EDPH","price":2455.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ Yes \/ No","offer_id":44013650083951,"sku":"94EDPH","price":2420.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ No \/ Yes","offer_id":44013650116719,"sku":"94EDPH","price":2420.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ No \/ No","offer_id":44013650149487,"sku":"94EDPH","price":2385.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1591847767__59846.jpg?v=1766558632"},{"product_id":"starfield-optics-gear-series-80mm-f-6-triplet-apo","title":"Starfield Optics Gear Series 80mm f\/6 Triplet APO","description":"\u003cp style=\"box-sizing: inherit; margin: 0px; color: #5e5e5e; font-family: Helvetica, arial, sans-serif; font-size: 16px; background-color: #ffffff;\"\u003e\u003cstrong\u003e\u003cspan class=\"x-el x-el-span c1-a4 c1-a5 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eNow with a Free 0.8x Adjustable Reducer!  While supplies last\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px; color: #5e5e5e; font-family: Helvetica, arial, sans-serif; font-size: 16px; background-color: #ffffff;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px; color: #5e5e5e; font-family: Helvetica, arial, sans-serif; font-size: 16px; background-color: #ffffff;\"\u003e\u003cspan class=\"x-el x-el-span c1-a4 c1-a5 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eThe Starfield Optics ED80 f\/6 Triplet APO will take your wide field imaging game to new levels. Using FPL53 (Ohara, Japan) optics, this telescope comes standard with heavy duty rings, extra long vixen style dovetail, and a handle designed to mount accessories. 2.5\" Rack and Pinion 2 speed focuser, and a retractable dew shield. To make your imaging experience even better, the camera angle rotator will let you frame up your object easily without adding flex or changing your focuser position. Multicoated optics are standard. Each Gear series telescope comes with a hard case and optical test report.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px; color: #5e5e5e; font-family: Helvetica, arial, sans-serif; font-size: 16px; background-color: #ffffff;\"\u003e\u003cspan class=\"x-el x-el-span c1-a4 c1-a5 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch4 class=\"x-el x-el-h4 c1-bl c1-2 c1-2n c1-2o c1-bm c1-3m c1-3n c1-31 c1-32 c1-2a c1-50 c1-bn c1-69 c1-bo c1-bp c1-bq c1-br\" style=\"box-sizing: inherit; font-family: Raleway, arial, sans-serif; overflow-wrap: break-word; margin: 0px 0px 24px; color: #1b1b1b; max-width: 100%; letter-spacing: 1.5px; line-height: 1.25; font-size: 19px; background-color: #ffffff;\" role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-typography=\"HeadingDelta\"\u003eHigh quality build and features\u003c\/h4\u003e\n\u003cdiv class=\"x-el c1-1 c1-2 c1-2n c1-2o c1-5s c1-31 c1-32 c1-an c1-ao c1-ap c1-aq c1-ar c1-as c1-at c1-au c1-av c1-aw c1-ax c1-ay c1-az c1-b0 c1-b1 c1-b2 c1-b3 c1-b4 c1-b5 c1-b6 c1-b7 c1-b8 c1-b9 c1-ba c1-bb c1-bc c1-bd c1-be c1-s c1-b c1-1n c1-c c1-3w c1-d c1-6a c1-e c1-h c1-i x-rt\" style=\"box-sizing: inherit; font-family: Helvetica, arial, sans-serif; font-size: 16px; flex-grow: 1; color: #5e5e5e; overflow-wrap: break-word; margin-top: 0px; margin-bottom: 24px; line-height: 1.5; max-width: 100%; background-color: #ffffff;\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED1\" data-typography=\"BodyAlpha\"\u003e\n\u003cul style=\"box-sizing: inherit; padding-left: 1.3em; margin: auto 16px;\"\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e2.5\" two speed rack and pinion focuser, with ball bearings, that is also fully rotatable\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eOptional motor focuser can easily be installed.\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSelf centering rotational lock, no setscrews to come loose\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSupport for heavy camera loads and accessories\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eSupports 2\" and 1.25\" eyepiece accessories\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eCamera Angle Adjuster (CAA)\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eHD CNC tube rings and Vixen style dovetail bar\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eHandle for transportation and mounting accessories\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eRetractable dew shield retractable for transport.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch4 class=\"x-el x-el-h4 c1-bl c1-2 c1-2n c1-2o c1-bm c1-3m c1-3n c1-31 c1-32 c1-2a c1-50 c1-bn c1-69 c1-bo c1-bp c1-bq c1-br\" style=\"box-sizing: inherit; font-family: Raleway, arial, sans-serif; overflow-wrap: break-word; margin: 0px 0px 24px; color: #1b1b1b; max-width: 100%; letter-spacing: 1.5px; line-height: 1.25; font-size: 19px;\" role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED2\" data-typography=\"HeadingDelta\"\u003eTriplet Apo 80mm f\/6 - FPL53 Objective\u003c\/h4\u003e\n\u003cdiv class=\"x-el c1-1 c1-2 c1-2n c1-2o c1-5s c1-31 c1-32 c1-an c1-ao c1-ap c1-aq c1-ar c1-as c1-at c1-au c1-av c1-aw c1-ax c1-ay c1-az c1-b0 c1-b1 c1-b2 c1-b3 c1-b4 c1-b5 c1-b6 c1-b7 c1-b8 c1-b9 c1-ba c1-bb c1-bc c1-bd c1-be c1-s c1-b c1-1n c1-c c1-3w c1-d c1-6a c1-e c1-h c1-i x-rt\" style=\"box-sizing: inherit; flex-grow: 1; overflow-wrap: break-word; margin-top: 0px; line-height: 1.5; max-width: 100%; margin-bottom: 0px !important;\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED2\" data-typography=\"BodyAlpha\"\u003e\n\u003cul style=\"box-sizing: inherit; padding-left: 1.3em; margin: auto 16px;\"\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eAperture 80mm \/ focal length 480mm \/ focal ratio f\/6\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eImage free of chromatic error due to \"Extra-Low-Dispersion\"\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eFPL53 apo element from Ohara (Japan)\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eAchieving better chromatic correction than comparable apochromats\u003c\/li\u003e\n\u003cli class=\"x-el x-el-span c1-a3 c1-a4 c1-b c1-c c1-d c1-e c1-h c1-i\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eInternally baffled to prevent stray light and get the contrast you would expect from performance refractors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44013675806831,"sku":"G80-06EDT_","price":1200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/gear80_2525201__90022.1682640757.1280.1280.jpg?v=1766559294"},{"product_id":"starfield-optics-gear-series-90mm-edt-f-6","title":"Starfield Optics Gear Series 90MM EDT F\/6","description":"\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe Starfield Optics EDT90 f\/6 Triplet APO with FPL53 will take your wide field imaging game to new levels. Using multi-coated FPL 53 (ED) glass, you'll experience sharp stars and amazing contrast. \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr style=\"box-sizing: border-box;\"\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eThe Starfield Géar Series comes with a retractable dew shield, an optical test report, heavy duty rings, a Vixen style dovetail, a handle designed to mount optional accessories, and a hard case with die-cut foam.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr style=\"box-sizing: border-box;\"\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eWeighing in at just 9 pounds, the Géar 90mm can be easily used on a mount with a payload capacity of 20 pounds, making your whole set up reasonably portable. \u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr style=\"box-sizing: border-box;\"\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eAn 0.8x adjustable reducer is available separately for astro-imaging with APS-C sensors.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003eCheck out the Review from \u003ca href=\"https:\/\/astrogeartoday.com\/starfields-gear-90-refractor-review-a-premium-apo-for-visual-and-photo-use\/\"\u003eAstro Gear Today Review \u003c\/a\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; font-family: \" source sans pro arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003ch4 role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-typography=\"HeadingDelta\" class=\"x-el x-el-h4 c1-55 c1-37 c1-18 c1-19 c1-aw c1-4t c1-4u c1-1b c1-1c c1-b c1-30 c1-c c1-26 c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; font-family: \" source sans pro arial sans-serif rgb break-word uppercase font-weight:=\"\" line-height:=\"\" margin:=\"\" font-size:=\"\" background-color:=\"\" overflow-wrap:=\"\" text-transform:=\"\" letter-spacing:=\"\" max-width:=\"\"\u003eHIGH QUALITY BUILD AND FEATURES\u003c\/h4\u003e\u003cdiv data-ux=\"ContentText\" alignment=\"left\" data-aid=\"ABOUT_DESCRIPTION_RENDERED1\" fontscalemultiplier=\"1\" data-typography=\"BodyAlpha\" class=\"x-el c1-1 c1-2 c1-18 c1-19 c1-1a c1-1b c1-1c c1-9w c1-9x c1-9y c1-9z c1-a0 c1-a1 c1-a2 c1-a3 c1-a4 c1-a5 c1-a6 c1-a7 c1-a8 c1-a9 c1-aa c1-ab c1-ac c1-ad c1-ae c1-af c1-ag c1-ah c1-ai c1-aj c1-ak c1-al c1-am c1-an c1-96 c1-b c1-4y c1-c c1-26 c1-d c1-e c1-f c1-g x-rt\" style=\"box-sizing: inherit; font-family: \" source sans pro arial sans-serif rgb break-word font-size:=\"\" background-color:=\"\" overflow-wrap:=\"\" line-height:=\"\" margin-top:=\"\" flex-grow:=\"\" max-width:=\"\" margin-bottom:=\"\"\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003c\/p\u003e\n\u003cul style=\"box-sizing: inherit; margin: auto 16px; padding-left: 1.3em;\"\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003e2.5\" two speed, rotating rack and pinion focuser with ball bearings \u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eOptional Motor focusers can easily be installed accepting 63mm accessories and a pressure fit lock  \u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eSupport for heavy camera loads and accessories\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eSupports 2\" and 1.25\" eyepiece accessories\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eCamera Angle Adjuster (CAA)\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eHD CNC tube rings and Vixen style dovetail bar\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eHandle for transportation and mounting accessories\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eRetractable dew shield retractable for transport\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit;\"\u003eOptional 0.8x adjustable reducer and 1.0x Flattener available, each are threaded for a secure connection to the focuser with no flex.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u003cbr style=\"box-sizing: inherit; clear: both;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eThe GÉAR 90 with 0.8x reducer has a larger field of view compared to the Esprit100. The GÉAR 90 is shown in RED\u003c\/span\u003e\u003cimg src=\"https:\/\/img1.wsimg.com\/isteam\/ip\/d66e8571-427a-4cd6-ac4e-4734ad6fa841\/astronomy_tools_fov.png\/:\/cr=t:0%25,l:0%25,w:100%25,h:100%25\/rs=w:600,cg:true\"\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Starfield Adjustable 2\" 0.8x Reducer \/ Starfield Adjustable 1.0x Flattener","offer_id":44013779189871,"sku":"SF-G90-06EDT","price":2270.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Gear90_-_1a__17854__39076.jpg?v=1766562510"},{"product_id":"starfield-horizon-series-70mm","title":"Starfield Horizon Series 70mm","description":"\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003eStart your astronomy journey with the Starfield Horizon series 70mm telescope.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\" style=\"box-sizing: border-box; margin: 0px 0px 0px 18px; color: #0f1111; padding: 0px; background-color: #ffffff;\"\u003e\n\u003cli style=\"box-sizing: border-box; list-style: disc; overflow-wrap: break-word; margin: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan class=\"a-list-item\" style=\"box-sizing: border-box;\"\u003eOptical Quality - \u003c\/span\u003e700mm focal length and 70mm aperture, fully coated optical glass lens, high transmission coating. The image is clearer and brighter. With 3 eyepieces and a Barlow lens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; list-style: disc; overflow-wrap: break-word; margin: 0px;\"\u003e\u003cspan class=\"a-list-item\" style=\"box-sizing: border-box; font-family: Arial;\"\u003eAlt\/Az Mount Type - The sturdy mount makes repositioning the telescope easy. Simply point the telescope where you want.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; list-style: disc; overflow-wrap: break-word; margin: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003ePhone Adapter and Tripod - Full size stainless steel adjustable tripod meet any height and angle. Smartphone adapter with 10mm eyepiece which provide 70x magnification.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003eEnjoy the night sky and all that it has to offer. The Horizon series telescope from Starfield Optics will give you breath taking views of the moons surface, show you the rings of Saturn, and the awesomeness of Jupiter. With its 45 degree correct image prism, you can also enjoy the telescope during the day for watching boats sail buy, or to look at birds. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003eIncluded with each telescope is a handy carry case for safe storage and transport. Use the cellphone \/ smartphone holder to take pictures of the moon. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003eDo not point this telescope towards the sun without proper solar filters installed on the front of the telescope.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; color: #0f1111;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/store.starfieldoptics.com\/assets\/images\/70mm%20telescope.jpg\" alt=\"\" border=\"0px\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/store.starfieldoptics.com\/assets\/images\/70mm%20lens.jpg\" alt=\"\" border=\"0px\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/store.starfieldoptics.com\/assets\/images\/70mm%20pointing.jpg\" alt=\"\" border=\"0px\"\u003e\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44013790920815,"sku":"SF-70700-01-1","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/70070-a__03854.jpg?v=1766562850"},{"product_id":"william-optics-gran-turismo-81-wifd","title":"William Optics Gran Turismo 81 WIFD","description":"\u003cspan style=\"font-family: Arial;\"\u003eIntroducing the WILLIAM OPTICS Internal Focus Design (WIFD) Apochromatic Series. This innovative and revolutionary design combines a precision (Patented) internal focusing mechanism with the highest quality optics available, providing the ultimate Apochromatic refractor for astrophotography. Designed from the ground up with the ability to handle the newest generation of large, heavy, high-resolution cooled cameras, the rock-solid optical tube assembly is uncompromised in quality. The movement of the focuser is integrated inside the main tube assembly, so there are no movements of a focuser drawtube visible from the outside.  The user can enjoy the benefits of a traditional two speed fine focuser, while not worrying about limitations typically found in traditional rear mounted focusers. \u003c\/span\u003e\u003cdiv\u003e\n\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eNEW internal focuser.  Our new design includes the Patented WO center focuser with precise internal sliding of fixed optics to prevent image shift.  The integrated position viewing window on the focuser provides instant verification of the graduated numerical display.  The smooth rack and pinion design is incorporated into the focuser to provide super fine adjustability for critical focus.  The internal movement of the optical elements is protected from the elements and can’t come out of alignment.  The redistribution of weight allows for better balance during imaging sessions.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cdiv\u003eScalable Design.  The WIFD series will allow for many sizes and is not limited to smaller refractors.   Additional optical designs are possible to meet various photographic requirements enhancing the line to include a number of apertures and fast focal ratios.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eInspired by the tremendous success of the WO CAT series of astrographs, William Optics has advanced the capabilities of astrophotography to the next level with this “no weight limit on photo accessories” design.  The solid tube where accessories are attached, has a rigid design, and will not flex or exhibit any change in the optical path regardless of the weight of the camera and filter wheel attached to it.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eImproved “CAT” design ring tubes and dovetail base are lighter while remaining equally rigid. The new design allows for better balance with heavy accessories, and has integral placement of the focuser knobs, providing easy access to focusing during imaging.  Included is the popular WO Saddle Bar Handle, critical for rigid guidescope mounting and autoguiding performance.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eSuper Smooth Field Rotator.  Our field rotator design features smooth camera rotation with markings for degrees and a locking thumbscrew to prevent accidental camera movement,also new Electric Rotator will be available in near future.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44013884080239,"sku":"T-GT-81 WIFD","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/gt81-wifd-side45_1__88165.png?v=1766565475"},{"product_id":"starfield-optics-gear-series-115mm-f-7-triplet-gen-ii","title":"Starfield Optics Gear series 115MM F\/7 Triplet Gen II","description":"\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cstrong\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eNew for 2025 an upgraded 3.7\" focuser, Losmandy style dovetail plate, new handle design\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eThe Starfield Optics EDT115 f\/7 Triplet APO will take your wide field imaging game to new levels. Collect more light compared to 102mm telescopes and gain high magnification with an f\/7 focal length. Using fully multi-coated ED glass and internal baffles, you will experience sharp stars and amazing contrast.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eThe Starfield Optics Géar Series comes with a retractable dew shield, an optical report, heavy duty rings, a Vixen style dovetail, a handle designed to mount optional accessories, and a soft case with die-cut foam.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eTo make your imaging experience even better the Camera Angle Rotator will let you frame up your object easily without adding flex or changing your focuser position. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eWith a total weight of 16lbs, this telescope can still be used on modern 30lb payload class mounts. Collect more light compared to 102mm telescopes and gain high magnification with great focal length. Get an objective lens that is 20% larger than a 4\" telescope but without needing to upgrade to a larger mount! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eMulticoated optics are standard and each Gear series telescope comes with a soft case with die cut foam, and\u003cspan class=\"x-el x-el-span c1-2z c1-30 c1-b c1-as c1-1j c1-1d c1-at\" style=\"box-sizing: inherit; font-weight: bold; letter-spacing: inherit; text-transform: inherit; line-height: inherit; font-size: inherit !important;\"\u003e optical test report\u003c\/span\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eAn adjustable dedicated 0.8x reducer takes this telescope to a new optical speed of f\/5.68 and focal length and 644mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003eRecently reviewed by Astronomy Magazine and selected as one of Astronomy's 2024 products of the year.  \u003ca href=\"https:\/\/www.astronomy.com\/observing\/we-test-starfield-optics-115mm-gear-triplet-apo\/\"\u003ehttps:\/\/www.astronomy.com\/observing\/we-test-starfield-optics-115mm-gear-triplet-apo\/ \u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"box-sizing: inherit; margin: 0px;\"\u003e\u003cspan class=\"x-el x-el-span c1-8y c1-8z c1-b c1-c c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit; letter-spacing: unset; text-transform: unset;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 class=\"x-el x-el-h4 c1-59 c1-3b c1-18 c1-19 c1-b0 c1-4x c1-4y c1-1b c1-1c c1-b c1-36 c1-c c1-26 c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit;\" role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-typography=\"HeadingDelta\"\u003eCheck out Trever from Astrobackyard use the Gear115 \u003c\/h4\u003e\n\u003ch4 class=\"x-el x-el-h4 c1-59 c1-3b c1-18 c1-19 c1-b0 c1-4x c1-4y c1-1b c1-1c c1-b c1-36 c1-c c1-26 c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit;\" role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-typography=\"HeadingDelta\"\u003e\u003ciframe title=\"YouTube video player\" src=\"\/\/www.youtube.com\/embed\/tXoM31jP2_E?si=_C_Fsj_fM_hGi761\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/h4\u003e\n\u003cdiv class=\"x-el c1-1 c1-2 c1-18 c1-19 c1-1a c1-1b c1-1c c1-9z c1-a0 c1-a1 c1-a2 c1-a3 c1-a4 c1-a5 c1-a6 c1-a7 c1-a8 c1-a9 c1-aa c1-ab c1-ac c1-ad c1-ae c1-af c1-ag c1-ah c1-ai c1-aj c1-ak c1-al c1-am c1-an c1-ao c1-ap c1-aq c1-9a c1-b c1-52 c1-c c1-26 c1-d c1-e c1-f c1-g x-rt\" style=\"box-sizing: inherit;\" data-ux=\"ContentText\" data-aid=\"ABOUT_DESCRIPTION_RENDERED1\" data-typography=\"BodyAlpha\"\u003e\n\u003ch4 class=\"x-el x-el-h4 c1-59 c1-3b c1-18 c1-19 c1-b0 c1-4x c1-4y c1-1b c1-1c c1-b c1-36 c1-c c1-26 c1-d c1-e c1-f c1-g\" style=\"box-sizing: inherit;\" role=\"heading\" aria-level=\"4\" data-ux=\"ContentHeading\" data-aid=\"ABOUT_HEADLINE_RENDERED1\" data-typography=\"HeadingDelta\"\u003eHIGH QUALITY BUILD AND FEATURES\u003c\/h4\u003e\n\u003cul style=\"box-sizing: inherit; margin: auto 16px; padding-left: 1.3em;\"\u003e\n\u003cli\u003e3.7\" two speed rack and pinion focuser, with ball bearings, that is also fully rotatable rotation. Optional Motor focusers can easily be installed. Accepting 63mm accessories, and a pressure fit lock. Support for heavy camera loads and accessories.\u003c\/li\u003e\n\u003cli\u003eSupports 2\" and 1.25\" eyepiece accessories\u003c\/li\u003e\n\u003cli\u003eCamera Angle Adjuster (CAA)\u003c\/li\u003e\n\u003cli\u003eRaised HD CNC tube rings and Losmandy style dovetail bar\u003c\/li\u003e\n\u003cli\u003eNew Handle design for transportation and mounting accessories\u003c\/li\u003e\n\u003cli\u003eRetractable dew shield retractable for transport.\u003c\/li\u003e\n\u003cli\u003eOptional 0.8x adjustable reducer and 1.0x Flattener available. Threaded for a secure connection to the focuser with no flex.\u003c\/li\u003e\n\u003cli\u003eSoftcase with diecut foam for both your telescope and your accessories.  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44013888864367,"sku":"G115-07EDT-02","price":2650.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Gear115-02c__01704.png?v=1766565608"},{"product_id":"sharpstar-61-edph-iii","title":"Sharpstar 61EDPH III 61mm f\/5.9 Triplet APO Refractor","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Sharpstar 61EDPH III is a compact 61mm f\/5.9 triplet APO refractor designed for portable observing and wide-field astrophotography. With a 360mm focal length, two ED glass elements, and support for a 44mm full-frame image circle when used with the appropriate corrector, it is a versatile telescope for travel rigs, lightweight mounts, and imaging setups.\u003c\/p\u003e\u003cp\u003eThis third-generation 61EDPH improves the optical design, tube mechanics, handle, and dovetail system compared with earlier versions, making it easier to balance and configure for both visual and imaging use.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThis telescope is a strong choice for beginner-to-intermediate astrophotographers, travel imagers, wide-field deep-sky photographers, and visual observers who want a compact APO refractor. It is also useful for experienced imagers who want a lightweight secondary imaging scope.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTriplet air-spaced APO objective with two ED glass elements.\u003c\/li\u003e\n\u003cli\u003e61mm aperture and 360mm focal length for wide-field imaging.\u003c\/li\u003e\n\u003cli\u003eCompact OTA weight makes it suitable for portable mounts.\u003c\/li\u003e\n\u003cli\u003e200mm Vixen-style dovetail helps balance cameras and accessories.\u003c\/li\u003e\n\u003cli\u003eMultifunction handle can accept a universal Vixen-style finder base.\u003c\/li\u003e\n\u003cli\u003eCompatible with optional dedicated full-frame reducer and flattener.\u003c\/li\u003e\n\u003cli\u003eReducer option converts the system to approximately 270mm at f\/4.4.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field nebula and Milky Way imaging.\u003c\/li\u003e\n\u003cli\u003eTravel astrophotography setups.\u003c\/li\u003e\n\u003cli\u003ePortable deep-sky imaging on compact equatorial or strain-wave mounts.\u003c\/li\u003e\n\u003cli\u003eVisual observing of bright deep-sky objects and wide star fields.\u003c\/li\u003e\n\u003cli\u003eBeginner-friendly APO refractor imaging when paired with a suitable mount and corrector.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe 61EDPH III can be paired with Sharpstar’s dedicated 61EDPH III full-frame reducer or full-frame flattener. The reducer uses an M68×1 connection to the focuser and provides an M48×0.75 camera-side thread with 55mm back focus, or M54×0.75 with 75mm back focus when the adapter is removed. The flattener also uses M68×1 to the focuser and M48×0.75 camera-side connection with 55mm back focus, or M54×0.75 with 81.5mm back focus when extended.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFor best astrophotography results, use the dedicated reducer or flattener.\u003c\/li\u003e\n\u003cli\u003eThe reducer and flattener are separate accessories unless specifically bundled.\u003c\/li\u003e\n\u003cli\u003eMount capacity, guiding, camera spacing, and backfocus accuracy still matter.\u003c\/li\u003e\n\u003cli\u003eSmall aperture limits high-power planetary and faint visual observing performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the 61EDPH III good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, it can be a very good beginner imaging refractor when paired with a suitable mount, camera, and corrector. It is compact, forgiving, and well suited to wide-field targets.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best for wide-field astrophotography, portable deep-sky imaging, and travel-friendly visual observing.\u003c\/p\u003e\u003ch3\u003eDoes it require additional accessories for imaging?\u003c\/h3\u003e\u003cp\u003eFor the best star shapes across larger sensors, use the dedicated 61EDPH III reducer or flattener. Camera adapters, guide equipment, and filters may also be required depending on the setup.\u003c\/p\u003e\u003ch3\u003eCan it cover full-frame cameras?\u003c\/h3\u003e\u003cp\u003eThe optical system supports full-frame imaging when used with the appropriate dedicated Sharpstar full-frame reducer or flattener.\u003c\/p\u003e\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\u003cp\u003eIt is not ideal if the customer’s main goal is high-magnification planetary observing, very small galaxies, or maximum visual light gathering.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sharpstar 61EDPH III for customers who want a small, high-quality APO refractor that can grow from visual use into serious wide-field astrophotography. Choose it for portability and flexibility. Choose a larger aperture telescope if your priority is high-power visual observing or small deep-sky targets.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":44013897121903,"sku":"61EDPHIII","price":847.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/61_edphiii__56593.jpg?v=1766565937"},{"product_id":"travel-scope-80-portable-telescope-with-smartphone-adapter","title":"Travel Scope 80 Portable Telescope with Smartphone Adapter","description":"\u003cul\u003e\n\u003cli\u003e80mm refractor telescope with fully coated glass optics and a lightweight frame.\u003c\/li\u003e\n\u003cli\u003eCustom backpack included to store your telescope and accessories comfortably.\u003c\/li\u003e\n\u003cli\u003eObserve in no time with a quick and easy, no-tool setup.\u003c\/li\u003e\n\u003cli\u003eAccessories include: two eyepieces (20mm and 10mm), erect image star diagonal, finderscope, and a smartphone adapter.\u003c\/li\u003e\n\u003cli\u003ePan handle Alt-Az control with clutch for smooth and accurate pointing.\u003c\/li\u003e\n\u003cli\u003eAdjustable height tripod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Travel Scope 80 is a refractor telescope perfect for terrestrial and celestial viewing on the go. The Travel Scope can view the planets, moon, star clusters and brighter deep sky objects like the Orion Nebula and Andromeda Galaxy at night. The erect image star diagonal makes the optical tube ideal for using as a spotting scope during the day.\u003c\/p\u003e\n\u003cp\u003eSetting up the telescope is a breeze, so you can begin observing in no time. Even on your first time out, you can assemble the telescope and its accessories in just a few minutes. The adjustable tripod legs allow you to customize the telescope’s height or place it on raised surfaces like a picnic table. \u003c\/p\u003e\n\u003cp\u003eThe total telescope kit weighs in at just 4.5 pounds—perfect for impromptu observing sessions or transporting wherever life’s adventures take you.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManual Alt-Azimuth telescope\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNavigate the sky with a pan handle Alt-Az control with clutch for smooth and accurate pointing. Move the clutch in an up\/down, left\/right fashion to track your object in the eyepiece.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAccessories Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Travel Scope 80 comes with two eyepieces (20mm and 10mm), erect image diagonal, finderscope, a smartphone adapter, and a travel backpack. The two eyepieces offer different magnifications to view your intended object. The erect image diagonal allows for right-side-up viewing ideal for terrestrial subjects but can also be used for celestial objects. The permanently mounted finderscope will help you quickly center an object in your eyepiece for easier observing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmartphone Adapter\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e– Image celestial or terrestrial objects with this smartphone adapter. With its light, rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 45mm or smaller. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon and planets.  This smartphone adapter installs easily by clamping over the top of an eyepiece.  The smartphone is held in position with the help of tightening knobs that securely lock your phone in place. Some large and\/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTravel Backpack –\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eA custom backpack comes with your telescope for you to store your optical tube, tripod, eyepieces and accessories comfortably.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStarry Night Software\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDownload Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44014091075695,"sku":"22030","price":208.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22030_Travel_Scope_80_01_CallOut_570x3802x__92371.jpg?v=1766570705"},{"product_id":"travel-scope-70-dx-portable-telescope-with-smartphone-adapter","title":"Travel Scope 70 DX Portable Telescope with Smartphone Adapter","description":"\u003cul\u003e\n\u003cli\u003eA portable telescope kit with everything you need to get started: 70mm refractor telescope with fully coated glass optics, full height tripod, travel backpack, plus lots more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmartphone Photography Accessories\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Capture images and video through your Travel Scope with the included smartphone adapter and Bluetooth shutter release\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore Bonus Accessories\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– You’ll also receive two eyepieces (20mm and 10mm), an erect image star diagonal, a 2x Barlow lens, a Moon filter, and a finderscope\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDay-to-Night Performance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Use your Travel Scope™ for celestial viewing at night or for observation of birds, nature, and wildlife during the day\u003c\/li\u003e\n\u003cli\u003eThe custom backpack fits your telescope and all its accessories comfortably\u003c\/li\u003e\n\u003cli\u003eObserve in no time with a quick and easy, no-tool setup\u003c\/li\u003e\n\u003cli\u003ePan handle Alt-Az control with clutch for smooth and accurate pointing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGet a new perspective on nature and the Universe with the ideal day-to-night telescope, Travel Scope 70 DX. This refractor telescope includes a full height tripod and lots of bonus accessories, include a smartphone adapter so you can capture images and video through the eyepiece. It all packs up into a high-quality custom backpack—ready to go wherever your adventures take you.\u003c\/p\u003e\n\u003cp\u003eWhether you take it along on your next camping trip or enjoy an impromptu backyard stargazing session, setting up the telescope is a breeze. Even on your first time out, you can assemble the telescope and its accessories in just a few minutes. The adjustable tripod legs allow you to customize the telescope’s height or place it on raised surfaces like a picnic table. \u003c\/p\u003e\n\u003cp\u003eBy night, Travel Scope 70 DX delivers great views of the planets, the Moon, star clusters and brighter deep sky objects like the Orion Nebula and Andromeda Galaxy. During the day, Travel Scope 70 DX doubles as a spotting scope. Enjoy amazing views of birds, wildlife, boats on the water, migrating whales, and so much more.\u003c\/p\u003e\n\u003cp\u003eThe entire telescope kit weighs just 3.3 pounds, so you can take it anywhere, hassle-free.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmartphone adapter and Bluetooth shutter release\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCreate your own stunning images and video of celestial or terrestrial objects with the smartphone adapter. With its light, rigid frame, this accessory allows you to connect any smartphone to your Travel Scope’s eyepiece. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon and planets.  This smartphone adapter installs easily by clamping over the top of an eyepiece.  The smartphone is held in position with the help of tightening knobs that securely lock your phone in place. To capture the best image, Celestron has also provided a Bluetooth shutter release that allows you to trigger the camera’s shutter on any Android or iOS smartphone remotely, without disturbing the placement of your phone and telescope.  NOTE: Some large and\/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManual Alt-Azimuth telescope\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNavigate the sky confidently with Travel Scope 70 DX’s intuitive pan handle. The Alt-Az control with clutch allows for smooth tracking and accurate pointing. Like a photographic tripod, you can move the clutch in an up\/down, left\/right fashion to follow your object in the eyepiece.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDeluxe Accessories Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn addition to the smartphone adapter and Bluetooth shutter release, Travel Scope 70 DX includes a full selection of optical accessories, including two eyepieces (20mm and 10mm), an erect image diagonal, a finderscope, a 2x Barlow lens, and a 1.25” Moon filter. The two eyepieces offer different magnifications so you can view your subject at low or high power. The erect image diagonal allows for more comfortable viewing and right-side-up images. The permanently mounted finderscope will help you locate objects and quickly center them in your telescope’s eyepiece. Lastly, the Moon filter reduces glare and increases contrast on the surface of the Moon.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTravel Backpack\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePack up your optical tube, tripod, eyepieces, and accessories safely and securely in the included custom backpack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStarry Night Software\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDownload Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing detailed information, plus tips and tricks for viewing our Solar System and beyond. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDownloadable Robert Reeves’\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eLunar Landscapes\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eeBook\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFamiliarize yourself with the Moon, our neighboring world, with\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.celestron.com\/blogs\/celestron-in-the-community\/lunar-landscapes-the-photography-of-robert-reeves\"\u003eRobert Reeves’ \u003cem\u003eLunar Landscapes\u003c\/em\u003e eBook\u003c\/a\u003e.\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eThis fascinating guide will take you on a tour of the Moon’s top geographical features, from the crater Tycho to the Sea of Tranquility where Apollo 11 astronauts landed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44014091173999,"sku":"22035","price":180.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22035_Travel_Scope_70_DX_01_89595b4c-83fd-4cd8-a869-138e307af892_570x3802x__23599.jpg?v=1766570713"},{"product_id":"askar-160apo","title":"Askar 160APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 160APO\u003c\/strong\u003e is a high-quality large-aperture 160mm f\/7 triplet air-spaced apochromatic refractor from Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). Sitting above the 140APO in the APO series, the 160APO offers substantially more light-gathering power, a longer focal length of 1120mm, and an engineering package designed to handle heavy camera and accessory loads — all with the premium optical correction and mechanical refinement the APO series is known for.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e who need maximum aperture in a refractor for high-resolution deep-sky imaging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservatory builders\u003c\/strong\u003e setting up a dedicated permanent or semi-permanent imaging platform\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGalaxy and globular cluster imagers\u003c\/strong\u003e who benefit from the 1120mm focal length for fine detail\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExperienced visual observers\u003c\/strong\u003e seeking a premium large-aperture refractor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e160mm f\/7 triplet APO optics\u003c\/strong\u003e with one ED glass element for exceptional colour correction at large aperture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated retractable rear lens tube\u003c\/strong\u003e (115mm) with rudder-type locking ring — binoviewer-ready when contracted, full imaging access when extended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine adjustment and 10cm travel, CNC machined with anti-reflective interior\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale markings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e400mm Losmandy dovetail plate included\u003c\/strong\u003e — engineered for the weight of this instrument on heavy-duty mounts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e flanking the focuser\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e for motorized autofocus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShips in a protective aluminum case\u003c\/strong\u003e for safe storage and transport\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener (f\/7) and 0.8x reducer (f\/5.6)\u003c\/strong\u003e available separately\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-resolution deep-sky astrophotography with full-frame and APS-C cameras\u003c\/li\u003e\n  \u003cli\u003eGalaxy imaging where 1120mm focal length delivers fine structural detail\u003c\/li\u003e\n  \u003cli\u003eEmission nebula and narrowband imaging with LRGB, SHO filter sets\u003c\/li\u003e\n  \u003cli\u003eVisual observing with 1.25\" or 2\" eyepieces and diagonals\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube contracted)\u003c\/li\u003e\n  \u003cli\u003eWide-field imaging with the optional 0.8x reducer at f\/5.6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener:\u003c\/strong\u003e maintains f\/7; corrects field curvature and coma; built-in filter thread and adapter set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 0.8x reducer:\u003c\/strong\u003e reduces to f\/5.6; field flattening included; adapter set included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 400mm Losmandy standard (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF:\u003c\/strong\u003e Compatible with ZWO EAF and most motorized focusers (sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer:\u003c\/strong\u003e Rear tube contracts for binoviewer compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt 13.6kg gross weight, requires a \u003cstrong\u003every high-payload equatorial mount\u003c\/strong\u003e — look for at least 20–25kg imaging capacity\u003c\/li\u003e\n  \u003cli\u003eA \u003cstrong\u003eflattener is strongly recommended\u003c\/strong\u003e for full-frame astrophotography\u003c\/li\u003e\n  \u003cli\u003eThis is an \u003cstrong\u003eadvanced instrument\u003c\/strong\u003e for experienced imagers only — not suitable for beginners\u003c\/li\u003e\n  \u003cli\u003eFlattener, reducer, EAF, and additional accessories sold separately\u003c\/li\u003e\n  \u003cli\u003eDue to size and weight, best suited for observatory or semi-permanent setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 160APO differ from the 140APO?\u003c\/strong\u003e\u003cbr\u003e\nThe 160APO has a 31% larger aperture area, a longer 1120mm focal length (vs 980mm), a larger 400mm Losmandy dovetail, and ships in an aluminum case instead of an Oxford cloth bag. It requires a heavier mount and is better suited to permanent or observatory setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003cbr\u003e\nAt 13.6kg gross, look for mounts with 20–25kg imaging payload — for example, a Skywatcher EQ8, iOptron CEM120, or equivalent. The included 400mm Losmandy dovetail provides excellent balance options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the retractable tube stable for imaging?\u003c\/strong\u003e\u003cbr\u003e\nYes. The retractable rear tube is engineered for rigidity — the optical axis is maintained when extended, and the rudder-type locking ring holds it securely under camera loads.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need the flattener for astrophotography?\u003c\/strong\u003e\u003cbr\u003e\nFor full-frame sensors, yes — the optional 1x flattener ensures sharp stars edge-to-edge. The 0.8x reducer also provides field flattening while shortening to f\/5.6 for faster exposures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. It accepts 1.25\" and 2\" eyepieces and diagonals, and is binoviewer-compatible with the rear tube contracted.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 160APO is one of the most capable large-aperture APO refractors available in its price class. Its combination of 160mm optics, long focal length, large Losmandy dovetail, and premium focuser makes it ideal for high-resolution deep-sky imaging — especially galaxies and faint emission nebulae where aperture and focal length make a real difference. Best matched to users with a heavy-payload equatorial mount and an established astrophotography setup. Not recommended for beginners or portable rigs.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 160APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c4c66299-8ebb-4a7f-8803-30a59af835e7.jpg\" alt=\"Askar 160APO Optical Path Diagram showing triplet APO lens configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/850a58d0-a499-44f1-a227-16642dce87c5.jpg\" alt=\"Askar 160APO Spot Diagram showing star point quality across the image field\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b288cb06-5853-4709-9b0a-e7de4729884c.jpg\" alt=\"Askar 160APO additional Spot Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e9034687-025b-4925-b0e3-772445963f96.jpg\" alt=\"Askar 160APO Product Size Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/18edc4b2-28a4-4954-9e5a-fd16d14681ad.jpg\" alt=\"Askar 160APO Connection Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fafe01e1-250c-41bb-bd04-81f28ef1cd08.jpg\" alt=\"Askar 160APO retractable lens tube instruction diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014108508271,"sku":"160APO","price":5383.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/APO160-a__37611.png?v=1766571575"},{"product_id":"askar-103apo","title":"Askar 103APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 103APO\u003c\/strong\u003e is a 103mm aperture, f\/6.8 triplet air-spaced apochromatic refractor designed and manufactured by Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). Purpose-built for astrophotography, the 103APO combines a compact, lightweight form factor with a high-performance triplet APO objective that includes one element of ED glass — all at a price point that makes serious imaging accessible to more astronomers.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Askar 103APO is best suited for \u003cstrong\u003eintermediate to advanced astrophotographers\u003c\/strong\u003e who want a compact yet capable APO refractor for deep-sky imaging. It is also an excellent choice for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting nebulae, galaxies, and star clusters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use users\u003c\/strong\u003e who want a telescope capable of both imaging and visual observation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravellers and portable rig builders\u003c\/strong\u003e needing a lightweight, packable APO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVisual observers\u003c\/strong\u003e who want a high-quality, colour-corrected refractor with 1.25\"\/2\" eyepiece support\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e103mm f\/6.8 triplet APO optics\u003c\/strong\u003e with one ED glass element — superior chromatic aberration correction versus standard doublets\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree optional correctors\u003c\/strong\u003e: 1x flattener (f\/6.8), 0.8x reducer (f\/5.4), and 0.6x reducer (f\/4) — giving the 103APO one of the widest range of focal ratios in its class\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetachable two-section lens tube\u003c\/strong\u003e — enables the 0.6x reducer and binoviewer use without additional adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.3\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine-focus adjustment and 10cm travel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale for repeatable framing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e — one on each side of the focuser for flexible accessory mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e290mm extended Vixen dovetail plate\u003c\/strong\u003e — compatible with most equatorial mounts; optional Losmandy plate available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatting felt interior dew shield and baffled tube interior\u003c\/strong\u003e for maximum stray light reduction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e for motorized autofocus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight at just 5.5kg gross\u003c\/strong\u003e (including rings and dovetail)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep-sky astrophotography with APS-C and full-frame cameras\u003c\/li\u003e\n  \u003cli\u003eWide-field imaging at f\/4 with the optional 0.6x reducer — excellent for large nebulae and star-forming regions\u003c\/li\u003e\n  \u003cli\u003eLRGB and narrowband filter imaging\u003c\/li\u003e\n  \u003cli\u003eVisual observing with 1.25\" and 2\" eyepieces or a diagonal\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube section detaches)\u003c\/li\u003e\n  \u003cli\u003eGuided astrophotography on mid-range equatorial mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener:\u003c\/strong\u003e maintains f\/6.8; corrects field curvature and coma; includes built-in 2\" filter thread and M54\/M48 adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 0.8x reducer:\u003c\/strong\u003e reduces to f\/5.4; field flattening included; M54\/M48 adapters included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 0.6x reducer:\u003c\/strong\u003e reduces to f\/4; requires rear tube detachment; M68\/M54\/M48 adapters included; ideal for wide-field imaging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 290mm Vixen standard; Losmandy dovetail optional\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF motorized focuser:\u003c\/strong\u003e Compatible with ZWO EAF and most third-party autofocusers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer:\u003c\/strong\u003e Compatible when rear section is removed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eA \u003cstrong\u003eflattener or reducer is recommended\u003c\/strong\u003e for astrophotography with full-frame sensors; the bare OTA may show field curvature on large sensors\u003c\/li\u003e\n  \u003cli\u003eThe 0.6x reducer \u003cstrong\u003erequires detachment of the rear tube section\u003c\/strong\u003e — this is by design, not a deficiency\u003c\/li\u003e\n  \u003cli\u003eRequires a suitable \u003cstrong\u003eequatorial or GoTo mount\u003c\/strong\u003e for astrophotography; alt-az mounts for visual use only\u003c\/li\u003e\n  \u003cli\u003eNot recommended as a first telescope for beginners unfamiliar with equatorial mounts\u003c\/li\u003e\n  \u003cli\u003eAll reducers\/flatteners and EAF are sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 103APO good for beginners?\u003c\/strong\u003e\u003cbr\u003e\nIt is better suited to intermediate users who already understand polar alignment, guiding, and basic astrophotography workflows. Complete beginners may find a simpler setup more approachable first.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between the three optional correctors?\u003c\/strong\u003e\u003cbr\u003e\nThe 1x flattener keeps f\/6.8 and corrects edge aberrations. The 0.8x reducer shortens to f\/5.4 for faster exposures and wider fields. The 0.6x reducer delivers an ultra-fast f\/4 with the widest field, requiring removal of the rear tube section.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 103APO accepts 1.25\" and 2\" diagonals and eyepieces and supports binoviewer use when the rear tube is detached.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nLook for an equatorial mount with at least 8–12kg imaging payload. The 290mm Vixen dovetail fits most mid-range EQ mounts; a Losmandy dovetail is available for heavier-duty setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat cameras is it compatible with?\u003c\/strong\u003e\u003cbr\u003e\nAPS-C and full-frame cameras work well. For full-frame, pair with the 1x flattener or 0.8x reducer for flat, edge-to-edge stars.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs motorized autofocus supported?\u003c\/strong\u003e\u003cbr\u003e\nYes. The focuser is compatible with ZWO EAF and most third-party electronic autofocusers (sold separately).\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 103APO is a standout value in the 100mm APO class. Its triplet optics, premium focuser, and exceptional range of optional correctors — including the rare f\/4 option — make it one of the most versatile compact astrographs available. If you're looking for a portable, capable refractor for deep-sky astrophotography and want the flexibility to shoot at f\/4, f\/5.4, or f\/6.8, the 103APO is hard to beat. Not the best choice for beginners or those without a compatible equatorial mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 103APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4762e8b7-2864-4eb1-abbe-73c85901a578.jpg\" alt=\"Askar 103APO Optical Path Diagram showing triplet lens element configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/5641f5ef-6fd6-4aaa-9405-9914eef55a55.jpg\" alt=\"Askar 103APO Spot Diagram with 1x Flattener\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b2514716-d145-42d0-8ed0-66b9450d9ac7.jpg\" alt=\"Askar 103APO Spot Diagram with 0.8x Reducer\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/16dafd4c-e367-4689-92e5-e3f9f444acc4.jpg\" alt=\"Askar 103APO Spot Diagram with 0.6x Reducer\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b56e16a0-7774-4019-83d3-5440c60a6e46.jpg\" alt=\"Askar 103APO Product Size Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/76104d42-e25d-4a5e-8de3-e82d81d42fb5.jpg\" alt=\"Askar 103APO Connection Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ea041ee5-da40-4df3-ac57-43702506c5cd.jpg\" alt=\"Askar 103APO Segmented Lens Tube Detachment Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014112079983,"sku":"103APO","price":1678.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/APO103-d__91289.png?v=1766571661"},{"product_id":"sidara-pro-80","title":"Explore Scientific Sidara Pro 80 80mm GoTo Refractor Telescope System","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific Sidara Pro 80 is a complete telescope system: an 80mm refractor supplied on a computerized GoTo mount that runs Explore Scientific's SkyAssist interface, together with a tripod and a set of eyepieces and accessories. It carries item number ES-AR80900-SAGT-ST10.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific describes the optics as delivering sharp, high-contrast views that suit the Moon and the planets particularly well — which is what an 80mm refractor is good at. A refractor has no central obstruction in the light path, so contrast on fine low-contrast detail such as the Jovian belts or the ridges along a lunar terminator holds up better than in a reflector of similar aperture. Eighty millimetres of aperture gathers roughly 130 times the light of a dark-adapted 7mm eye pupil, and Dawes' criterion for an 80mm objective works out to about 1.45 arcseconds. Those two figures are calculated from the published aperture, and they define what the instrument can show before any question of mounting or software comes into it.\u003c\/p\u003e\n\u003cp\u003eThe GoTo mount is the other half of the system. SkyAssist is Explore Scientific's software interface for driving the mount to a chosen object, which shifts the work of an observing session away from chart-reading and toward looking through the eyepiece. Explore Scientific has not published a specification table for the Sidara Pro 80, so focal length, focal ratio, tripod height, mount payload and the focal lengths of the supplied eyepieces are absent from the specifications below rather than estimated.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who want one box that covers everything.\u003c\/strong\u003e This is a good match if you would rather have telescope, mount, tripod and eyepieces arrive matched to each other than assemble a system piece by piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observers:\u003c\/strong\u003e an unobstructed 80mm objective is a contrast-friendly design, and the Moon and the bright planets are the targets it serves best from a suburban sky.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone observing from a light-polluted location:\u003c\/strong\u003e a GoTo mount finds objects that are invisible to the naked eye, which is exactly the situation where star-hopping from anchor stars stops working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHouseholds sharing a telescope:\u003c\/strong\u003e a driven mount keeps the target centred while several people take turns at the eyepiece, instead of the object drifting out between looks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm refractor objective:\u003c\/strong\u003e around 130x the light grasp of the unaided eye, with a theoretical resolution near 1.45 arcseconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnobstructed optical path:\u003c\/strong\u003e no secondary mirror sitting in the beam, which is the structural reason refractors hold contrast well at moderate aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComputerized GoTo mount:\u003c\/strong\u003e the mount drives to a selected object and then tracks it, keeping the target in the eyepiece rather than letting the Earth's rotation carry it out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkyAssist interface:\u003c\/strong\u003e Explore Scientific's software front end for object selection and slewing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripod, eyepieces and accessories included:\u003c\/strong\u003e Explore Scientific list all three as part of the package, though the eyepiece focal lengths are not stated on their page.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo collimation to maintain:\u003c\/strong\u003e a refractor objective is set at the factory and holds its alignment, so there is no optical adjustment to learn.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA refractor forms its image with a lens at the front of the tube rather than a mirror at the back. Light passes straight through the objective to a focus near the rear, with nothing intruding into the beam — no secondary mirror, no spider vanes, and therefore none of the diffraction effects those introduce. The practical consequence is that the contrast transfer at middle spatial frequencies, which is where planetary surface detail lives, stays higher in an unobstructed design than in an obstructed one of the same aperture.\u003c\/p\u003e\n\u003cp\u003eThe second consequence is mechanical. The objective sits in a cell at the front and never needs attention: no collimation routine, no mirror to clean, and a sealed tube that keeps dust off the optical surfaces. Cooldown is brief too, because a thin lens reaches ambient temperature far faster than a thick mirror blank.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific has not published the focal length or focal ratio for the Sidara Pro 80, so the true field of view, the magnification with the supplied eyepieces and the exit pupil at each of them all remain open. Those follow directly from the focal length, and we would rather obtain the figure from Explore Scientific than infer one.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLunar observing, from the whole disc at low power down to individual craters along the terminator.\u003c\/li\u003e\n\u003cli\u003ePlanetary observing — the phases of Venus, the Galilean moons, the belts of Jupiter and the rings of Saturn.\u003c\/li\u003e\n\u003cli\u003eBright deep-sky targets such as the Orion Nebula, the Pleiades and the brighter double stars.\u003c\/li\u003e\n\u003cli\u003eGuided observing sessions where the mount does the finding and the observer does the looking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e the package includes eyepieces, and the focal lengths are not stated by Explore Scientific. Once we know what ships in the box, we can advise which additional focal length would widen the useful range most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification arithmetic:\u003c\/strong\u003e magnification is the telescope's focal length divided by the eyepiece focal length. The focal length for this model is unpublished, so example magnifications would be invented rather than calculated — we can get the figure from Explore Scientific if it is important to your choice of eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e a lunar or neutral-density filter takes the glare off a bright Moon at higher powers. These thread into the eyepiece barrel, so the barrel size of the supplied eyepieces determines which filters fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e a computerized mount needs a power source, and the supply arrangement is not detailed on the vendor page. A 12 V field battery is the usual answer for observing away from an outlet, and we stock them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar observing:\u003c\/strong\u003e possible only with a purpose-made front-mounted solar filter sized to the tube's outside diameter, which is a separate purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific has not published a specification table for the Sidara Pro 80.\u003c\/strong\u003e Focal length, focal ratio, tripod height, mount payload rating, power requirement and the focal lengths of the supplied eyepieces are absent from their page, so those rows are blank here rather than filled with figures from a similar model. If one of them decides the purchase for you, we will get it from our Explore Scientific rep and pass on their answer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific currently lists this model as coming soon.\u003c\/strong\u003e Availability timing depends on their release schedule rather than ours, so a note to us before you order will get you the current status and an expected date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEighty millimetres has a ceiling.\u003c\/strong\u003e Faint galaxies and small planetary nebulae are aperture-limited targets, and this system is built around the Moon, the planets and the brighter deep-sky objects. Within that range it does very well, and it stays a telescope that actually gets carried outside.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot particularly. The tripod goes up, the mount head sits on it, the tube goes into the saddle, and the electronics are aligned on one or two bright stars before observing starts. A refractor holds its collimation, so there is no optical adjustment on top of that. The alignment routine is the one part that takes practice, and it becomes a two-minute habit after a couple of sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with everything I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExplore Scientific lists the telescope, the GoTo mount with SkyAssist, the tripod, and eyepieces and accessories as part of the package. They do not itemise the accessories, so we will confirm the exact contents with the distributor before your order ships.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat can I expect to see?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLunar craters and mountain ranges in detail, the phases of Venus, the four Galilean moons and the main belts of Jupiter, the rings of Saturn, the brighter open clusters and the Orion Nebula. Faint galaxies are beyond what 80mm of aperture will show from most locations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat focal length is the telescope?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is not published on the Explore Scientific page for this model. We can ask them for the figure and give you the answer they supply rather than an estimate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I take photographs with it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eShort exposures of the Moon and the brighter planets are within reach, particularly with a smartphone adapter. Deep-sky imaging asks more of a mount than a visual GoTo head is usually designed to give, and the payload and tracking specifications here are unpublished, so we would look at that with you rather than promise it.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: an 80mm refractor on a computerized GoTo mount with SkyAssist, supplied with tripod, eyepieces and accessories as a single system, aimed squarely at the Moon and the planets. Explore Scientific has not yet published a full specification sheet for it — so if there is a figure you need before deciding, ask us and we will get it from them and tell you exactly what they say.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52950292004975,"sku":"ES-AR80900-SAGT-ST10","price":831.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ES-AR80900-SAGT-ST10_1.webp?v=1776178993"},{"product_id":"sidara-pro-102","title":"Explore Scientific Sidara Pro 102 102mm GoTo Refractor Telescope System","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific Sidara Pro 102 is a complete telescope package rather than an optical tube on its own. It pairs a 102mm refractor with an automated GoTo mount built around Explore Scientific's SkyAssist technology, and ships with the tripod, eyepieces and assorted accessories needed to observe on the first clear night. The mount locates objects and then tracks them, so the object stays centred instead of drifting out of the field while you look.\u003c\/p\u003e\n\u003cp\u003eThe four-inch aperture is the figure that sets what the system can show. A 102mm objective gathers roughly 210 times the light of a fully dark-adapted 7mm eye pupil, which is what puts galaxies, nebulae and globular clusters within reach from a reasonable sky, while a refractor's unobstructed light path keeps planetary and lunar contrast crisp.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific publishes an unusually short specification set for this package. There is no focal length, focal ratio, limiting magnitude, resolution figure, mount payload rating, tripod height or weight on their product page, and the supplied eyepieces are listed as included without their focal lengths being stated. Those rows appear below as unpublished rather than as numbers we have estimated, and the sections that follow work from what is actually published.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers who want the telescope pointed for them:\u003c\/strong\u003e SkyAssist handles the finding, which turns a session into looking at objects rather than hunting for them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeople buying one box:\u003c\/strong\u003e optics, mount, tripod, eyepieces and accessories arrive together and are specified to work with each other, so nothing is left to work out afterwards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObservers with limited sky time:\u003c\/strong\u003e this is a good match if your clear nights are short and you would rather spend them observing than star hopping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e102mm refractor optical tube:\u003c\/strong\u003e four inches of unobstructed aperture, with no central obstruction to reduce contrast and no mirrors to collimate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated GoTo mount with SkyAssist:\u003c\/strong\u003e the mount drives to a chosen object and then tracks it, taking the Earth's rotation out of the equation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripod included,\u003c\/strong\u003e so the package stands on its own without a separate purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces and assorted accessories included,\u003c\/strong\u003e giving a working magnification range out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA refractor forms its image with a lens at the front of the tube rather than a mirror at the back. Light passes straight through the objective to a focus near the eyepiece end, with nothing in the middle of the beam. That unobstructed path is the reason refractors are known for contrast: there is no secondary mirror or spider vane to scatter light out of the diffraction core and into the surrounding rings, so fine low-contrast detail on a planet or the Moon holds up well relative to aperture.\u003c\/p\u003e\n\u003cp\u003eAperture governs two things independently. Light grasp scales with the area of the objective, so 102mm collects about 210 times what a dark-adapted eye does, which is what determines how faint an object can be and still register. Resolving power scales with the diameter, setting how finely two close stars or two adjacent features on Jupiter can be separated. Explore Scientific does not publish a resolution or limiting magnitude figure for this package, so we quote neither and describe the behaviour instead.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific also does not publish the focal length or focal ratio of the Sidara Pro 102's optical tube, and those two figures are what set the magnification the supplied eyepieces deliver and how wide the resulting field is. Rather than infer them, we would rather find out: if the exact focal length is the deciding factor for you, ask us and we will put the question to our Explore Scientific representative before you order.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGuided tours of the night sky, where the mount finds the object and you concentrate on looking at it.\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing, where a refractor's contrast and a tracking mount work together at higher magnifications.\u003c\/li\u003e\n\u003cli\u003eBrighter deep-sky objects — open clusters, the larger nebulae, globular clusters and the nearer galaxies.\u003c\/li\u003e\n\u003cli\u003ePublic outreach, school groups and family observing, where tracking keeps a target centred through a queue of viewers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEverything needed to observe is in the package:\u003c\/strong\u003e optical tube, GoTo mount, tripod, eyepieces and accessories. No separate mount purchase is involved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e supplied, though Explore Scientific does not publish which focal lengths ship in the box. Once you have the telescope, the focal lengths are printed on the eyepieces themselves and we can advise on what would usefully extend the set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e telescope focal length divided by eyepiece focal length. Since the focal length of this tube is not published, we are not going to quote magnification figures — ask us and we will get the number from Explore Scientific.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific publishes very little numerical specification for this package.\u003c\/strong\u003e Focal length, focal ratio, limiting magnitude, resolution, mount capacity, tripod height and total weight are all absent from their product page, so those rows below read as unpublished rather than carrying estimates. If a specific figure decides the purchase for you, ask and we will get it from our Explore Scientific rep first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA GoTo mount needs an alignment at the start of each session.\u003c\/strong\u003e That is normally a matter of levelling the tripod and centring one or more bright stars when prompted, and it takes a few minutes. Once done, the mount finds objects for the rest of the night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe supplied eyepiece focal lengths are not published.\u003c\/strong\u003e They are marked on the eyepieces when the package arrives, and if the set turns out to leave a gap at high or low power, we can fill it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour inches of aperture is four inches.\u003c\/strong\u003e A GoTo mount changes how easily you find an object, not how bright it appears; galaxies stay faint grey smudges in any telescope of this size, while clusters, the Moon and the planets are where the view rewards most.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe mechanical side is simple: the tripod is spread and levelled, the mount goes on top, the optical tube seats on the mount and the accessories go on. The part that is new to most people is the alignment routine, where the mount asks you to centre a bright star or two so it can work out where it is pointing. It is a guided process through the hand controller and takes a few minutes once you have done it once. We are happy to walk you through the first alignment over the phone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does SkyAssist do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is the technology behind the mount's automated pointing: you select an object and the mount slews to it and then tracks it, keeping it in the eyepiece rather than letting the Earth's rotation carry it out of the field.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMagnification is the telescope's focal length divided by the eyepiece's. Explore Scientific does not publish the focal length for this tube, so we would rather ask them than quote a number we cannot source. Send us a message and we will chase it down.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat can I expect to see?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLunar craters and mountain shadows in real detail, Saturn's rings, the four Galilean moons of Jupiter and its main cloud belts, the phases of Venus, bright double stars, open clusters, the brighter nebulae and globular clusters, and the nearer galaxies as soft grey shapes. Sky darkness affects the deep-sky end far more than the Solar System end.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a complete 102mm refractor system on an automated SkyAssist GoTo mount, supplied with tripod, eyepieces and accessories, aimed at observers who would rather look at objects than search for them. Explore Scientific publishes little in the way of numerical specifications for it, so if a particular figure matters to your decision, ask us and we will get the answer from our Explore Scientific rep before you order.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52950317662319,"sku":"ES-AR102660-SAGT-ST10","price":1108.95,"currency_code":"CAD","in_stock":true}]},{"product_id":"evostar-80edx-apo-refractor","title":"Sky-Watcher Evostar 80EDX APO Doublet Refractor","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSky-Watcher Evostar 80EDX APO Doublet Refractor\u003c\/strong\u003e is a compact 80mm apochromatic refractor optical tube designed for high-quality visual observing and astrophotography. It features an 80mm aperture, 600mm focal length, f\/7.5 focal ratio, FPL-53 ED glass, and a 2.8-inch dual-speed Crayford-style focuser.\u003c\/p\u003e\u003cp\u003eThe Evostar 80EDX is designed for astronomers who want the clean contrast and sharp star performance of an ED refractor in a portable format that is easier to mount, transport, and use than larger-aperture refractors.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis telescope is best for beginners who want room to grow, intermediate visual observers, and astrophotographers looking for a compact refractor for portable imaging rigs. It is also a strong choice for users who want an ED refractor for lunar, planetary, wide-field deep-sky, and travel-friendly observing.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Telescope?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm APO refractor design:\u003c\/strong\u003e A practical aperture for sharp visual observing and portable astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFPL-53 ED glass:\u003c\/strong\u003e Helps reduce false colour and improve contrast compared with standard achromatic refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600mm focal length:\u003c\/strong\u003e Useful for wide-field deep-sky targets, lunar observing, and general-purpose refractor work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/7.5 focal ratio:\u003c\/strong\u003e A balanced focal ratio for visual observing and imaging with the right accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.8-inch dual-speed focuser:\u003c\/strong\u003e Supports more precise focusing for both visual use and camera work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable optical tube:\u003c\/strong\u003e Easier to mount and transport than larger refractors while still offering ED optical performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field visual observing\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003eBeginner-to-intermediate refractor astrophotography\u003c\/li\u003e\n\u003cli\u003ePortable deep-sky imaging with a suitable equatorial mount\u003c\/li\u003e\n\u003cli\u003eTravel-friendly astronomy setups\u003c\/li\u003e\n\u003cli\u003eHigh-contrast views of star clusters, the Moon, planets, and brighter deep-sky objects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Evostar 80EDX includes tube rings, a V-style dovetail, 2.8-inch Crayford-style focuser, camera angle adjuster, thread-on dew shield, focuser adapter ring, spacer, and 1.25-inch to 2-inch adapter. Use it with a mount that can comfortably support the optical tube plus diagonal, eyepieces, camera, guide scope, flattener, filters, or other accessories.\u003c\/p\u003e\u003cp\u003eFor astrophotography, a suitable field flattener or corrector may be required depending on camera sensor size and target type. Camera spacing and backfocus should be confirmed for the specific imaging accessory being used.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount not included:\u003c\/strong\u003e A compatible mount and tripod or pier are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a complete imaging package:\u003c\/strong\u003e Camera, guide scope, filters, field flattener, and other imaging accessories are sold separately unless specifically bundled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField correction may be required:\u003c\/strong\u003e Imaging users should confirm the correct flattener or reducer for their camera sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmaller aperture than 100mm or 120mm refractors:\u003c\/strong\u003e Choose a larger model if visual brightness and resolution are more important than portability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eIs the Sky-Watcher Evostar 80EDX good for beginners?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. It is a good choice for a serious beginner who wants a quality refractor that can support both visual observing and future astrophotography, provided it is paired with an appropriate mount.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is this telescope best used for?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt is best used for wide-field observing, lunar and planetary viewing, portable astrophotography, and general-purpose ED refractor work.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan the Evostar 80EDX be used for astrophotography?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. It can be used for astrophotography when paired with a suitable equatorial mount, camera, and the correct field flattener or reducer where needed.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eDoes it include everything needed for visual observing?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt includes several mechanical accessories, but eyepieces, diagonal, finder, mount, and tripod may need to be purchased separately depending on the package and observing setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhen should I choose a larger refractor instead?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eChoose a 100mm or 120mm refractor if you want more aperture, more resolution, and brighter visual views, and you have a mount capable of handling the larger optical tube.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sky-Watcher Evostar 80EDX for observers and imagers who want a portable ED refractor with strong optical performance, manageable size, and room to grow into astrophotography. Choose it when portability and clean refractor views matter more than maximum aperture.\u003c\/p\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":52950682337391,"sku":"S11135","price":1040.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/S11155_Evostar80EDX_OTA__LeftFront_1800x1800_be30b5f9-2e7f-4672-a37d-8cba030e7d38.webp?v=1776189159"},{"product_id":"evostar-100edx-apo-doublet","title":"Sky-Watcher Evostar 100EDX APO Doublet Refractor","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSky-Watcher Evostar 100EDX APO Doublet Refractor\u003c\/strong\u003e is a 100mm apochromatic refractor optical tube designed for high-quality visual observing and astrophotography. It features a 100mm aperture, 700mm focal length, f\/7 focal ratio, FPL-53 ED glass, and a 2.8-inch dual-speed Crayford-style focuser.\u003c\/p\u003e\u003cp\u003eThe Evostar 100EDX sits between the more compact 80EDX and the larger 120EDX, making it a strong all-around refractor for observers and imagers who want more aperture than an 80mm scope while keeping the setup more manageable than a 120mm refractor.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis telescope is best for intermediate visual observers, serious beginners who want room to grow, and astrophotographers looking for a capable ED refractor with a practical balance of aperture, focal length, and portability.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Telescope?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm APO refractor design:\u003c\/strong\u003e A useful step up in aperture for brighter views and improved resolution compared with smaller refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFPL-53 ED glass:\u003c\/strong\u003e Helps reduce false colour and improve image contrast compared with standard achromatic refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e700mm focal length:\u003c\/strong\u003e A versatile focal length for lunar, planetary, double-star, and many deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/7 focal ratio:\u003c\/strong\u003e A balanced optical speed for visual observing and imaging with the right accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.8-inch dual-speed focuser:\u003c\/strong\u003e Supports precise focus control for both eyepiece use and camera work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded mounting hardware:\u003c\/strong\u003e Tube rings and a V-style dovetail are included for use with compatible mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003eDouble-star observing\u003c\/li\u003e\n\u003cli\u003eDeep-sky visual observing\u003c\/li\u003e\n\u003cli\u003eWide-field and moderate focal length astrophotography\u003c\/li\u003e\n\u003cli\u003eIntermediate refractor imaging setups\u003c\/li\u003e\n\u003cli\u003ePortable but capable visual astronomy rigs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Evostar 100EDX includes tube rings, a V-style dovetail, 2.8-inch Crayford-style focuser, camera angle adjuster, thread-on dew shield, focuser adapter ring, spacer, and 1.25-inch to 2-inch adapter. Pair it with a mount that can comfortably support the optical tube plus diagonal, eyepieces, camera, guide scope, field flattener, filters, or other accessories.\u003c\/p\u003e\u003cp\u003eFor astrophotography, a suitable field flattener or corrector may be required depending on camera sensor size and imaging goals. Camera spacing and backfocus should be confirmed for the specific imaging accessory being used.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount not included:\u003c\/strong\u003e A compatible mount and tripod or pier are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a complete imaging package:\u003c\/strong\u003e Camera, guide scope, filters, field flattener, and other imaging accessories are sold separately unless specifically bundled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField correction may be required:\u003c\/strong\u003e Imaging users should confirm the correct flattener or reducer for their camera sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess compact than an 80mm refractor:\u003c\/strong\u003e Choose the 80EDX if portability is the top priority.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess aperture than the 120EDX:\u003c\/strong\u003e Choose the 120EDX if visual brightness and high-resolution work are more important than size and mounting ease.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eIs the Sky-Watcher Evostar 100EDX good for beginners?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt can be a good choice for a serious beginner who wants a quality refractor with room to grow, but it is best matched with a capable mount and appropriate accessories.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is this telescope best used for?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt is best used for lunar and planetary observing, double stars, visual deep-sky observing, and refractor-based astrophotography with the correct mount and accessories.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan the Evostar 100EDX be used for astrophotography?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. It can be used for astrophotography when paired with a suitable equatorial mount, camera, and the correct field flattener or reducer where needed.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eDoes it include everything needed for visual observing?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIt includes several mechanical accessories, but eyepieces, diagonal, finder, mount, and tripod may need to be purchased separately depending on the package and observing setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhen should I choose the 100EDX instead of the 80EDX or 120EDX?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eChoose the 100EDX when you want more aperture and resolution than the 80EDX while keeping the telescope easier to mount and transport than the larger 120EDX.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sky-Watcher Evostar 100EDX for observers and imagers who want a versatile mid-size ED refractor with strong optical performance, practical focal length, and a balanced size for visual observing and astrophotography.\u003c\/p\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":52950696525935,"sku":"S11145","price":1240.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/S11145_Evostar100EDX_OTA_LeftFront_1800x1800_e56ae5ab-af28-4e0f-9ab3-9b42bd26b529.webp?v=1776189697"},{"product_id":"esprit-100edx-super-apo-triplet","title":"Esprit 100EDX Super APO Triplet","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eTHE ELITE ASTROGRAPHS FOR THE REST OF US\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eDesigned with the discerning astrophotographer in mind, Sky-Watcher’s ALL NEW top-of-the-line Esprit EDX refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more. With the Esprit’s three-element, air-spaced objective lens design, false color is virtually eliminated, yielding exceptional contrast and sharpness. Each element is fully multi-coated with Sky-Watcher’s proprietary Metallic High-Transmission Coatings™ (MHTC)™, producing a transmission rate that rivals any refractor on the market.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTriplet super-apochromatic design\u003c\/li\u003e\n\u003cli\u003eThree-element, air-spaced optical assembly virtually eliminates false color\u003c\/li\u003e\n\u003cli\u003e100mm aperture, 550mm focal length, f\/5.5 focal ratio\u003c\/li\u003e\n\u003cli\u003eFPL-53 glass\u003c\/li\u003e\n\u003cli\u003e3.4-inch linear rail rack-and-pinion with micro focus\u003c\/li\u003e\n\u003cli\u003eAluminum optical tube with white, glossy finish\u003c\/li\u003e\n\u003cli\u003eCamera Angle Adjuster and rotatable focuser\u003c\/li\u003e\n\u003cli\u003eSturdy carry handle attaches to tube rings\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: Tube rings, D-style dovetail, M48 camera adapter, and padded hard case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003eIn addition to superb optics, all Esprits feature exclusive dual-speed, Helinear track focusers, which provide smooth, rock-solid focusing with zero image shift. Using a Camera Angle Adjuster which is found on the end of the focuser drawtube and allows for orientation of your camera or eyepieces without needing to rotate the entire focuser. The Esprit EDX 100, 120, and 150 also come stock with rotatable focusers.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAll Sky-Watcher Esprit EDX refractors come with mounting rings, dovetail plate, camera adapter, and foam-lined hard case.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eUnsurpassed Performance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEsprit EDXs use three-element air-spaced optics to deliver images equal to scopes costing thousands of dollars more.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eAward-winning Optics\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAll Sky-Watcher Esprit EDXs use laboratory matched lens assemblies, including extra-low dispersion elements, for unrivaled clarity and color correction.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eExclusive Linear-track Focuser\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSky-Watcher’s exclusive focuser design combines a rock-solid platform with zero image shift.\u003c\/p\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":52950752002159,"sku":"S11435","price":2910.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Esprit100EDX_OTAOnly_LeftFront_1800x1800_130b76fb-a4f9-4bd3-abf5-42f0cd063316.webp?v=1776196420"},{"product_id":"william-optics-zenithstar-61-ii-apo-refractor","title":"William Optics Zenithstar 61 II APO Refractor","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Zenithstar 61 II APO\u003c\/strong\u003e is a compact 61mm f\/5.9 refractor designed for visual astronomy, travel, wildlife viewing, and wide-field astrophotography. With FPL-53 ED glass, a 360mm focal length, and a 2-inch rack-and-pinion focuser, it is a versatile small telescope for customers who want premium optics in a portable package.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Zenithstar 61 II is best for beginners, travelling observers, visual astronomers, and astrophotographers who want one compact APO refractor that can serve multiple roles. It is especially useful for wide-field imaging, grab-and-go observing, and lightweight mount setups.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e61mm FPL-53 APO optics:\u003c\/strong\u003e Sharp, high-contrast views with strong colour correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360mm focal length:\u003c\/strong\u003e Excellent for wide-field observing and imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/5.9 focal ratio:\u003c\/strong\u003e Flexible for both visual use and camera-based imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch focuser:\u003c\/strong\u003e Supports common visual and imaging accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable design:\u003c\/strong\u003e Easy to transport for travel and quick observing sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBeginner visual astronomy\u003c\/li\u003e\n\u003cli\u003eWide-field astrophotography\u003c\/li\u003e\n\u003cli\u003eWildlife and terrestrial viewing\u003c\/li\u003e\n\u003cli\u003eTravel telescope setups\u003c\/li\u003e\n\u003cli\u003eGrab-and-go observing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Zenithstar 61 II supports 2-inch accessories and can be paired with William Optics Flat61A or Flat61R optics for astrophotography. Customers using cameras should confirm adapter spacing, flattener\/reducer choice, mount capacity, and focusing accessories before purchase.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eFor best astrophotography results across larger sensors, use a suitable field flattener or reducer. Customers looking for high-magnification planetary imaging or small galaxy imaging may prefer a larger aperture or longer focal length telescope.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Zenithstar 61 II good for beginners?\u003c\/h3\u003e\u003cp\u003eYes. It is compact, portable, and useful for both visual astronomy and learning wide-field astrophotography.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eYes. It can be used for visual observing with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\u003cp\u003eYes. It is well suited to wide-field astrophotography when paired with the correct flattener or reducer and a tracking mount.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Zenithstar 61 II APO is a strong choice for customers who want a premium compact refractor for travel, visual observing, and wide-field imaging. Choose it for portability and versatility.\u003c\/p\u003e\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following optical report graphics are included for customers who want to review compatible imaging performance.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-zenithstar-61ii-flat61a-diagram-01.jpg?v=1779651419\" alt=\"William Optics Zenithstar 61 II Flat61A optical diagram report\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-zenithstar-61ii-flat61r-diagram-01.jpg?v=1779651432\" alt=\"William Optics Zenithstar 61 II Flat61R optical diagram report\"\u003e\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53154227880047,"sku":"A-Z61II-RD","price":962.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":53154227912815,"sku":"A-Z61IIGD","price":962.0,"currency_code":"CAD","in_stock":true},{"title":"Space Grey","offer_id":53154227945583,"sku":"A-Z61IITG","price":962.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-zenithstar-61ii-perspective-1.jpg?v=1779651376"},{"product_id":"william-optics-zenithstar-81-wifd-apo-refractor","title":"William Optics Zenithstar 81 WIFD APO Refractor","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Zenithstar 81 WIFD\u003c\/strong\u003e is a premium 81mm APO refractor designed for visual observing, portable astronomy, and wide-field astrophotography. With William Optics Internal Focus Design, a compact optical tube, and support for compatible imaging accessories, it gives customers a versatile refractor that can be used visually or as part of a serious imaging setup.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Zenithstar 81 WIFD is best for observers and astrophotographers who want more aperture than a small travel scope while still keeping the system portable. It is a strong fit for beginner-to-intermediate imagers, visual observers, and customers building a compact wide-field refractor system.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e81mm APO optics:\u003c\/strong\u003e A strong balance of portability, aperture, and sharp refractor performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWIFD internal focuser:\u003c\/strong\u003e Helps maintain alignment and stability with heavier cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual and imaging capable:\u003c\/strong\u003e Works for eyepiece observing and astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable design:\u003c\/strong\u003e Easier to mount and transport than larger refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging upgrade path:\u003c\/strong\u003e Compatible with appropriate William Optics flatteners\/reducers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVisual astronomy\u003c\/li\u003e\n\u003cli\u003eWide-field astrophotography\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003ePortable refractor setups\u003c\/li\u003e\n\u003cli\u003eBeginner-to-intermediate imaging systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eFor astrophotography, pair the Zenithstar 81 WIFD with the appropriate William Optics flattener or reducer and confirm camera spacing, adapters, and mount capacity. For visual use, pair it with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eFor best edge-to-edge imaging performance with larger sensors, a field flattener or reducer is recommended. Customers seeking high-magnification planetary imaging or small-galaxy work may prefer a longer focal length telescope.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Zenithstar 81 WIFD good for beginners?\u003c\/h3\u003e\u003cp\u003eYes. It is a good beginner-to-intermediate refractor for customers who want one telescope for both visual observing and astrophotography.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eYes. It can be used for visual observing with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\u003cp\u003eYes. It is well suited to wide-field imaging when paired with the correct flattener or reducer and a suitable tracking mount.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Zenithstar 81 WIFD is a strong choice for customers who want a premium compact refractor with more capability than a 61mm travel scope. Choose it for a versatile visual and imaging platform that remains portable.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53154229289071,"sku":"T-ZS-81RD-WIFD","price":1515.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":53154229321839,"sku":"T-ZS-81GD-WIFD","price":1515.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-zenithstar-81-wifd-perspective-1.jpg?v=1779652899"},{"product_id":"william-optics-fluorostar-91-apo-refractor","title":"William Optics Fluorostar 91 APO Refractor","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Fluorostar 91 APO\u003c\/strong\u003e is a premium 91mm f\/5.9 triplet apochromatic refractor designed for visual astronomy, portable observing, and high-quality deep-sky astrophotography. With a 540mm focal length, compact optical tube, and premium triplet design, it is a strong choice for customers who want serious refractor performance in a manageable size.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 91 is best for intermediate and advanced observers or astrophotographers who want a higher-performance triplet refractor than a compact entry-level APO. It is suitable for visual observing, lunar and planetary viewing, wide-field deep-sky imaging, and premium portable telescope setups.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e91mm triplet APO optics:\u003c\/strong\u003e Delivers strong colour correction and sharp image quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/5.9 focal ratio:\u003c\/strong\u003e A versatile balance for visual observing and astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e540mm focal length:\u003c\/strong\u003e Useful for nebulae, star fields, larger galaxies, and lunar observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable premium refractor:\u003c\/strong\u003e More capable than smaller travel scopes while still manageable on many mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging upgrade path:\u003c\/strong\u003e Pairs with compatible William Optics flatteners\/reducers for camera use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVisual astronomy\u003c\/li\u003e\n\u003cli\u003eWide-field and mid-field astrophotography\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003ePremium portable refractor setups\u003c\/li\u003e\n\u003cli\u003eDeep-sky imaging with compatible flattener\/reducer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eFor astrophotography, customers should pair the Fluorostar 91 with the appropriate William Optics flattener or reducer and confirm camera spacing, adapters, filter wheel clearance, focuser support, and mount capacity. For visual observing, use compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 91 is more capable than compact travel refractors but still has a shorter focal length than dedicated planetary or small-galaxy telescopes. For best full-frame astrophotography performance, a matched field flattener or reducer is recommended.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Fluorostar 91 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt can be used by a beginner, but it is best for customers who want a premium refractor and are prepared to invest in a suitable mount and accessories.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eYes. The Fluorostar 91 can be used for visual observing with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\u003cp\u003eYes. It is well suited to astrophotography when paired with the appropriate flattener or reducer and a suitable tracking mount.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Fluorostar 91 APO is a strong choice for customers who want a premium portable triplet refractor for both observing and imaging. Choose it if you want better optical performance and more reach than a smaller travel scope while keeping the system manageable.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53154229452911,"sku":"T-FLT-91RD-RP33","price":3033.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":53154229485679,"sku":"T-FLT-91GC-RP33","price":3033.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-fluorostar-91-perspective-1.jpg?v=1779652911"},{"product_id":"william-optics-fluorostar-120-apo-refractor","title":"William Optics Fluorostar 120 APO Refractor","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Fluorostar 120 APO\u003c\/strong\u003e is a premium 120mm f\/6.5 triplet apochromatic refractor designed for serious visual observing and high-quality astrophotography. With a 780mm focal length and large 120mm aperture, it provides a strong balance of resolution, light gathering, and image quality for lunar, planetary, deep-sky, and imaging use.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 120 is best for intermediate to advanced observers and astrophotographers who want a larger premium refractor for backyard observing and imaging. It is especially well suited to customers with a capable mount who want more aperture than compact travel refractors.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120mm triplet APO optics:\u003c\/strong\u003e Excellent colour correction, contrast, and resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e780mm focal length:\u003c\/strong\u003e Useful for lunar, planetary, galaxy, and nebula work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/6.5 focal ratio:\u003c\/strong\u003e Balanced for visual observing and astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge refractor performance:\u003c\/strong\u003e More aperture and reach than compact APO refractors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVisual astronomy\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eGalaxy and nebula imaging\u003c\/li\u003e\n\u003cli\u003ePremium backyard refractor setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eFor imaging, pair the Fluorostar 120 with the appropriate William Optics flattener or reducer and confirm camera spacing, focuser capacity, filter wheel clearance, and mount capacity. For visual use, pair it with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 120 requires a more capable mount than smaller refractors. It is portable for many users, but it is not a lightweight grab-and-go telescope. For full-frame imaging, a matched field flattener or reducer is recommended.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Fluorostar 120 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is best for intermediate or advanced users, although a committed beginner with the right mount and accessories can grow into it.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eYes. It is well suited to visual observing with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\u003cp\u003eYes. It is a strong imaging refractor when paired with a suitable mount, camera, and correct flattener or reducer.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Fluorostar 120 APO is a strong choice for customers who want a serious premium refractor for both observing and imaging. Choose it if you want more aperture and reach than a compact APO while staying within a manageable refractor size.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53154229911663,"sku":"A-F120RD-RP33","price":4965.0,"currency_code":"CAD","in_stock":true},{"title":"Space Grey","offer_id":53154229944431,"sku":"A-F120TG-RP33","price":4965.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-fluorostar-120-perspective-1_bf232e46-4faa-43e3-9785-7875986b0fcb.jpg?v=1779653639"},{"product_id":"william-optics-fluorostar-132-apo-refractor","title":"William Optics Fluorostar 132 f\/6.9 APO Refractor (3.7\" R\u0026P Focuser)","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Fluorostar 132 APO\u003c\/strong\u003e is a premium large-aperture 132mm f\/6.9 triplet apochromatic refractor designed for serious visual observing and advanced astrophotography. With a 925mm focal length, excellent colour correction, and substantial light-gathering power, it is built for customers who want a high-performance refractor for lunar, planetary, galaxy, nebula, and deep-sky imaging work.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 132 is best for experienced observers and astrophotographers who want a larger premium APO refractor for a capable backyard or semi-permanent imaging system. It is well suited to users who already have a mount that can handle a heavier optical tube and accessories.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e132mm triplet APO optics:\u003c\/strong\u003e Provides strong resolution, contrast, and colour correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e925mm focal length:\u003c\/strong\u003e Excellent for galaxies, lunar detail, planetary observation, and smaller deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/6.9 focal ratio:\u003c\/strong\u003e A versatile refractor focal ratio for visual observing and imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge-aperture refractor performance:\u003c\/strong\u003e More reach and light gathering than compact APO refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging upgrade path:\u003c\/strong\u003e Can be paired with compatible flatteners\/reducers for astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAdvanced visual astronomy\u003c\/li\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eGalaxy and nebula imaging\u003c\/li\u003e\n\u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n\u003cli\u003ePermanent or semi-permanent backyard imaging setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eFor astrophotography, pair the Fluorostar 132 with the appropriate William Optics flattener or reducer and confirm camera spacing, focuser capacity, filter wheel clearance, guiding setup, and mount capacity. For visual observing, use compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cp\u003eThe Fluorostar 132 is not a lightweight grab-and-go telescope. It requires a suitable mount and is best suited to customers who are comfortable managing a larger refractor system. For best imaging results, a matched field flattener or reducer is recommended.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Fluorostar 132 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is best for experienced users or committed beginners with a suitable mount and a clear plan for visual observing or astrophotography.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eYes. It is excellent for visual astronomy with compatible diagonals and eyepieces.\u003c\/p\u003e\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\u003cp\u003eYes. It is a strong imaging refractor when paired with a capable mount, guiding system, camera, and appropriate flattener or reducer.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eThe William Optics Fluorostar 132 APO is a strong choice for customers who want a large premium refractor with serious visual and imaging capability. Choose it if you want more reach, aperture, and resolution than smaller APO refractors and have the mount capacity to support it.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53154231451759,"sku":"A-F132III-RP33R","price":6897.0,"currency_code":"CAD","in_stock":true},{"title":"Space Grey","offer_id":53154231484527,"sku":"A-F132TGIV-RP37","price":6897.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-fluorostar-132-perspective-1.jpg?v=1779652936"},{"product_id":"askar-120apo-triplet-apo-refractor-telescope","title":"Askar 120APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 120APO\u003c\/strong\u003e is a premium 120mm aperture, f\/7 triplet air-spaced apochromatic refractor designed and manufactured by Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). Built specifically for serious astrophotography and high-quality visual observation, the 120APO brings together large-aperture optics, a purpose-built imaging focuser, and a robust mechanical package — all in a surprisingly portable form factor. With a focal length of 840mm and a limiting magnitude of 12.2, this telescope is engineered to capture deep, detailed images of galaxies, nebulae, and star clusters.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Askar 120APO is ideal for \u003cstrong\u003eintermediate to advanced astrophotographers\u003c\/strong\u003e who want a large-aperture APO refractor capable of illuminating full-frame sensors. It suits:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e pursuing nebulae, galaxy clusters, and extended DSOs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use users\u003c\/strong\u003e who want both a serious imaging platform and a capable visual telescope\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable observatory builders\u003c\/strong\u003e who need a high-performance instrument that doesn't require a massive mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVisual observers\u003c\/strong\u003e seeking a wide-field, colour-corrected view of the night sky through 1.25\" or 2\" eyepieces or a binoviewer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is not a beginner scope — it is best suited to users who already have experience with equatorial mounts and astrophotography workflows.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120mm f\/7 triplet APO optics\u003c\/strong\u003e with one element of ED glass for outstanding chromatic aberration correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e36% larger aperture area\u003c\/strong\u003e than the Askar 103APO — more light, more detail, more contrast\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimiting magnitude of 12.2\u003c\/strong\u003e — revealing objects invisible to smaller refractors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.3\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine-focus ratio and 10cm of travel — smooth, precise, and rock-solid under imaging loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale markings — frame your target without touching the mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo-section segmented lens tube\u003c\/strong\u003e — rear section detaches for binoviewer use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e (one on each side of the focuser) for flexible accessory mounting without disassembly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e290mm extended Vixen dovetail plate\u003c\/strong\u003e compatible with virtually all equatorial mounts; optional Losmandy plate available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e with enlarged CNC locking screws for fast, tool-free operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal weight of just 6.5kg\u003c\/strong\u003e (including tube rings and dovetail) — portable enough for field use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e — ready for motorized autofocus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener and 0.8x reducer\u003c\/strong\u003e available separately for full-frame flat-field imaging or wider, faster coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep-sky astrophotography with monochrome or one-shot colour cameras (APS-C and full-frame)\u003c\/li\u003e\n  \u003cli\u003eNarrowband imaging of emission nebulae, supernova remnants, and HII regions\u003c\/li\u003e\n  \u003cli\u003eLRGB and SHO filter imaging setups\u003c\/li\u003e\n  \u003cli\u003eGalaxy and star cluster photography where resolution and contrast are critical\u003c\/li\u003e\n  \u003cli\u003eHigh-quality visual observing with 1.25\" or 2\" eyepieces or a diagonal\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube section detaches to achieve correct backfocus)\u003c\/li\u003e\n  \u003cli\u003eMotorized autofocus with ZWO EAF and compatible focuser motors\u003c\/li\u003e\n  \u003cli\u003eDual-scope or guide scope setups — dual finder bases allow flexible mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female thread; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional flattener:\u003c\/strong\u003e Askar 120APO 1x Full-Frame Flattener — maintains f\/7, corrects field curvature and coma, includes built-in filter threads and M54\/M48 adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional reducer:\u003c\/strong\u003e Askar 120APO 0.8x Full-Frame Reducer — brings focal ratio to f\/5.6 for faster imaging; includes field flattening, built-in filter threads, and M54\/M48 adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 290mm Vixen-style standard; Losmandy dovetail optional\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotorized focuser:\u003c\/strong\u003e Compatible with ZWO EAF and most third-party motorized focusers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer compatibility:\u003c\/strong\u003e Rear tube section detaches to achieve correct backfocus for binoviewers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCamera compatibility:\u003c\/strong\u003e Suitable for APS-C and full-frame sensors (with flattener or reducer)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eA \u003cstrong\u003ededicated field flattener or reducer is recommended\u003c\/strong\u003e for full-frame astrophotography — the bare OTA may exhibit field curvature at the edges on large sensors\u003c\/li\u003e\n  \u003cli\u003eRequires an \u003cstrong\u003eequatorial or GoTo mount\u003c\/strong\u003e rated for at least 10–15kg payload for astrophotography; alt-az mounts are suitable for visual use only\u003c\/li\u003e\n  \u003cli\u003eThis is an \u003cstrong\u003eadvanced instrument\u003c\/strong\u003e — not recommended for first-time telescope buyers without prior astrophotography experience\u003c\/li\u003e\n  \u003cli\u003eEAF motorized focuser, Losmandy dovetail, filters, and reducers\/flatteners are \u003cstrong\u003esold separately\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eThe optional reducer\/flattener accessories use M54\/M48 threads — confirm your camera adapter compatibility before purchasing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Askar 120APO good for beginners?\u003c\/strong\u003e\u003cbr\u003e\nNot ideally. This telescope is best matched to intermediate or advanced astrophotographers who are already comfortable with equatorial mounts, imaging software, and polar alignment. Beginners will find better value in a smaller, more forgiving APO.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the Askar 120APO best used for?\u003c\/strong\u003e\u003cbr\u003e\nIt excels at deep-sky astrophotography — especially nebulae, galaxies, and star clusters. It is also a capable visual telescope for those who want a premium refractor experience.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener or reducer for astrophotography?\u003c\/strong\u003e\u003cbr\u003e\nFor APS-C sensors, the bare OTA often performs well. For full-frame sensors, the optional 1x flattener is recommended to eliminate edge field curvature. The 0.8x reducer is ideal when you want a wider field of view and faster f\/5.6 exposures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mounts is it compatible with?\u003c\/strong\u003e\u003cbr\u003e\nThe included 290mm Vixen dovetail plate fits most equatorial mounts. An optional Losmandy dovetail is available for heavier-duty mounts. Look for mounts with at least a 10–15kg imaging payload capacity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 120APO accepts 1.25\" and 2\" diagonals and eyepieces, and the segmented tube allows binoviewer use. It is a capable and pleasurable visual instrument, not just an imaging platform.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes it different from the Askar 103APO?\u003c\/strong\u003e\u003cbr\u003e\nThe 120APO has 36% more aperture area than the 103APO, pushing the limiting magnitude to 12.2. The 3.3\" focuser is larger and more rigid, and the overall mechanical package is designed for heavier imaging loads.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs motorized autofocus supported?\u003c\/strong\u003e\u003cbr\u003e\nYes. The focuser is designed for compatibility with ZWO EAF and most third-party electronic autofocusers. EAF is sold separately.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 120APO is one of the most well-rounded large-aperture refractors available in its price class. It delivers true apochromatic correction, a premium imaging focuser, and a thoughtful mechanical design in a package that's still portable enough for field use. If you're an intermediate or advanced astrophotographer looking to step up to a 120mm APO platform with serious full-frame capability, the 120APO is an outstanding choice. Pair it with the optional 1x flattener for clean flat-field images, or the 0.8x reducer for a wider, faster setup. Not recommended for beginners or those without a suitable equatorial mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 120APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/ad346366-5e30-4faa-83ee-649f0300e265.jpg\" alt=\"Askar 120APO Optical Path Diagram showing triplet APO lens element configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/2229efdb-a906-4d49-9c69-c1e741021fed.jpg\" alt=\"Askar 120APO Spot Diagram showing star point quality across the image field\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c5d3bffb-5543-41e8-912f-95be0088f51b.jpg\" alt=\"Askar 120APO Product Size Diagram with full mechanical dimensions\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b43e44b4-27c1-4eef-a33b-980f866a205d.jpg\" alt=\"Askar 120APO Connection Diagram showing rear thread and adapter options\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/98c87463-b6cd-40a5-add0-ef3c117ec850.jpg\" alt=\"Askar 120APO Segmented Lens Tube Detachment Diagram for binoviewer use\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/823f51ad-23b8-46a9-872c-9266e00911a5.jpg\" alt=\"Askar 120APO ZWO EAF Installation Diagram for motorized autofocus setup\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default","offer_id":53155868475503,"sku":"120APO","price":2378.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/120apoa.webp?v=1779735453"},{"product_id":"askar-140apo-triplet-apo-refractor-telescope","title":"Askar 140APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 140APO\u003c\/strong\u003e is a large-aperture 140mm f\/7 triplet air-spaced apochromatic refractor from Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). Designed to serve both serious amateur astrophotographers and professional imagers, the 140APO steps up aperture, light-gathering power, and focuser size compared to smaller APO models in the series, while incorporating a clever retractable lens tube design that keeps overall length manageable. With a limiting magnitude of 12.5 and a 980mm focal length, this telescope excels at deep, detailed imaging of galaxies, nebulae, and star clusters.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e who need serious light-gathering power in a refractor platform\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use observers\u003c\/strong\u003e wanting premium image quality both at the eyepiece and through a camera\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting galaxies, emission nebulae, and large-format DSOs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservatory users\u003c\/strong\u003e seeking a premium refractor for a permanent or semi-permanent setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e140mm f\/7 triplet APO optics\u003c\/strong\u003e with one ED glass element for outstanding chromatic correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimiting magnitude of 12.5\u003c\/strong\u003e — captures fainter objects with more detail than smaller APOs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated retractable rear lens tube\u003c\/strong\u003e (125mm extension) with rudder-type locking ring — enables binoviewer use when contracted, full imaging with flattener\/reducer when extended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine adjustment and 10cm travel — larger and more rigid than the 3.3\" focuser on smaller models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale for frame rotation without disturbing the mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e300mm Losmandy dovetail plate included\u003c\/strong\u003e — ideal for heavy equatorial mounts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e on either side of the focuser\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e for motorized autofocus integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable despite its size\u003c\/strong\u003e — shortest overall length 735mm; gross weight 10.9kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener (f\/7) and 0.8x reducer (f\/5.6)\u003c\/strong\u003e — both include built-in 2\" filter threads and adapter sets\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDeep-sky astrophotography with APS-C and full-frame cameras\u003c\/li\u003e\n  \u003cli\u003eHigh-resolution galaxy and nebula imaging where aperture and resolution matter\u003c\/li\u003e\n  \u003cli\u003eLRGB, narrowband, and SHO filter imaging\u003c\/li\u003e\n  \u003cli\u003eVisual observing with 1.25\" or 2\" eyepieces and diagonals\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube contracted)\u003c\/li\u003e\n  \u003cli\u003eWide-field imaging with the 0.8x reducer at f\/5.6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener:\u003c\/strong\u003e maintains f\/7; corrects field curvature and coma; 2\" filter thread + M68\/M54\/M48 adapters included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 0.8x reducer:\u003c\/strong\u003e reduces to f\/5.6; field flattening included; 2\" filter thread + M54\/M48 adapters included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 300mm Losmandy standard (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF:\u003c\/strong\u003e Compatible with ZWO EAF and most motorized focusers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer:\u003c\/strong\u003e Rear tube contracts for binoviewer compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt 10.9kg gross weight, requires a \u003cstrong\u003ehigh-payload equatorial mount\u003c\/strong\u003e — look for at least 15–20kg imaging capacity for stable astrophotography\u003c\/li\u003e\n  \u003cli\u003eA \u003cstrong\u003eflattener or reducer is strongly recommended\u003c\/strong\u003e for full-frame astrophotography\u003c\/li\u003e\n  \u003cli\u003eNot recommended for beginners; best matched to users with EQ mount and imaging experience\u003c\/li\u003e\n  \u003cli\u003eFlattener, reducer, EAF, and additional accessories are all sold separately\u003c\/li\u003e\n  \u003cli\u003eReducer\/flattener adapters use M68\/M54\/M48 threads — confirm camera adapter compatibility before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 140APO compare to the 120APO?\u003c\/strong\u003e\u003cbr\u003e\nThe 140APO offers a 36% larger aperture area, deeper limiting magnitude (12.5 vs 12.2), a larger 3.5\" focuser, and an integrated retractable tube design. It requires a heavier mount but delivers more resolution and contrast on faint objects.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nThe 140APO ships with a 300mm Losmandy dovetail. Look for a mount with at least 15–20kg imaging payload — for example, a Skywatcher EQ6-R, iOptron CEM70, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the retractable tube design stable?\u003c\/strong\u003e\u003cbr\u003e\nYes. Askar engineered the retractable rear tube for rigidity — the optical axis is not affected when the tube is extended, and the rudder-type locking ring secures it firmly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nAbsolutely. With the rear tube contracted, connect 1.25\" or 2\" diagonals and eyepieces. It is also binoviewer compatible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat cameras is it compatible with?\u003c\/strong\u003e\u003cbr\u003e\nAPS-C and full-frame sensors. For full-frame, pair with the optional 1x flattener for sharp stars edge-to-edge.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 140APO is a serious step up for astrophotographers who have outgrown smaller APOs and need more aperture and resolution. Its retractable tube, Losmandy dovetail, large 3.5\" focuser, and deep limiting magnitude make it ideal for high-end imaging setups. Choose it if you have a suitable heavy-payload mount and want one of the best mid-large refractors available at its price point. Not recommended for beginners or those with mounts rated below 15kg imaging payload.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 140APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/76c951b6-ace8-4a00-a80e-e8b78502b0d0.jpg\" alt=\"Askar 140APO Optical Path Diagram showing triplet APO lens element configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/b7ee91fc-ef62-410f-b168-3e0a3de711d8.jpg\" alt=\"Askar 140APO Spot Diagram showing star point quality across the image field\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/7a0c45c2-97ce-481a-a4c3-c94128c4d6bd.jpg\" alt=\"Askar 140APO Product Size Diagram with full mechanical dimensions\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e9fadd4e-46bc-43fd-9c71-bbe7f0b5ecd8.jpg\" alt=\"Askar 140APO Connection Diagram showing rear thread and adapter compatibility\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/71f53200-b54f-4817-97d5-8188e107c751.jpg\" alt=\"Askar 140APO retractable lens tube instruction diagram for eyepiece, flattener, and reducer use\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default","offer_id":53155870343279,"sku":"140APO","price":3498.6,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/140APOa.webp?v=1779736047"},{"product_id":"askar-185apo-triplet-apo-refractor-telescope","title":"Askar 185APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 185APO\u003c\/strong\u003e is a premium large-aperture 185mm f\/7 triplet air-spaced apochromatic refractor from Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). As one of the most capable refractors in the APO series, the 185APO fills a genuine market gap — delivering the light-gathering power and resolution of a large-aperture instrument with the optical quality of a true APO design, at a price point that remains competitive for its class. With a limiting magnitude of 13.1 and a 1295mm focal length, it is purpose-built for serious deep-sky imaging.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced and professional-level astrophotographers\u003c\/strong\u003e who need maximum aperture in a premium refractor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservatory users\u003c\/strong\u003e with permanent or semi-permanent imaging setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-resolution imagers\u003c\/strong\u003e targeting galaxies, globular clusters, and fine nebula structure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use observers\u003c\/strong\u003e who want the finest visual experience alongside imaging capability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e185mm f\/7 triplet APO optics\u003c\/strong\u003e with one ED glass element — exceptional colour correction at this aperture class\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimiting magnitude of 13.1\u003c\/strong\u003e — significant gain over smaller APOs in the series\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated retractable rear lens tube\u003c\/strong\u003e (95mm) with rudder-type locking ring — contracts for binoviewer use, extends for imaging with flattener or reducer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine adjustment, 100mm travel, CNC machined anti-reflective interior\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e400mm Losmandy dovetail plate included\u003c\/strong\u003e for heavy equatorial mounts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended 400mm handle\u003c\/strong\u003e with slot design for finder scope or accessory mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e flanking the focuser\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e for motorized autofocus\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eShips in a protective aluminum case\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener (f\/7) and 0.8x reducer (f\/5.6)\u003c\/strong\u003e — both include built-in 2\" filter threads and M68\/M54\/M48 adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-resolution deep-sky astrophotography with full-frame monochrome and OSC cameras\u003c\/li\u003e\n  \u003cli\u003eGalaxy imaging where 1295mm focal length and 185mm aperture deliver extraordinary detail\u003c\/li\u003e\n  \u003cli\u003eLRGB, narrowband, and SHO imaging of emission nebulae, supernova remnants, and star clusters\u003c\/li\u003e\n  \u003cli\u003eVisual observing with 1.25\" or 2\" eyepieces and diagonals\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube contracted)\u003c\/li\u003e\n  \u003cli\u003eWide-field imaging with the optional 0.8x reducer at f\/5.6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 1x flattener:\u003c\/strong\u003e maintains f\/7; corrects field curvature and coma; includes 2\" filter thread and M68\/M54\/M48 adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional 0.8x reducer:\u003c\/strong\u003e reduces to f\/5.6; field flattening included; M68\/M54\/M48 adapters included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 400mm Losmandy standard (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF:\u003c\/strong\u003e Compatible with ZWO EAF and most motorized focusers (sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer:\u003c\/strong\u003e Rear tube contracts for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt 17.2kg gross weight, requires a \u003cstrong\u003every high-payload equatorial mount\u003c\/strong\u003e — 25kg+ imaging capacity recommended\u003c\/li\u003e\n  \u003cli\u003eA \u003cstrong\u003eflattener is strongly recommended\u003c\/strong\u003e for full-frame astrophotography\u003c\/li\u003e\n  \u003cli\u003eStrictly an \u003cstrong\u003eadvanced instrument\u003c\/strong\u003e — not suitable for beginners or portable setups\u003c\/li\u003e\n  \u003cli\u003eFlattener, reducer, EAF, and accessories are all sold separately\u003c\/li\u003e\n  \u003cli\u003eBest suited to observatory or permanent pier installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 185APO compare to the 160APO?\u003c\/strong\u003e\u003cbr\u003e\nThe 185APO has a 34% larger aperture area, a longer 1295mm focal length, a heavier gross weight of 17.2kg, and a deeper limiting magnitude of 13.1 vs the 160APO's approximately 12.7. It requires an even more substantial mount and is best reserved for observatory setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nLook for mounts rated at 25kg or more imaging payload — for example, a Skywatcher EQ8-R, iOptron CEM120, or equivalent direct-drive or gear-driven heavy mount. The 400mm Losmandy dovetail provides ample balance range.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener for astrophotography?\u003c\/strong\u003e\u003cbr\u003e\nFor full-frame sensors, yes. The optional 1x flattener is essential for sharp, flat stars edge-to-edge. The 0.8x reducer delivers a wider field and f\/5.6 for faster exposures, and also provides field flattening.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. It accepts 1.25\" and 2\" diagonals and eyepieces, and supports binoviewer use when the rear tube is contracted.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs motorized autofocus supported?\u003c\/strong\u003e\u003cbr\u003e\nYes — the focuser is EAF-compatible with ZWO EAF and most third-party motorized focusers (sold separately).\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 185APO is an exceptional instrument for advanced astrophotographers who want the performance of a large-aperture refractor without compromise. Its limiting magnitude of 13.1, premium triplet APO optics, and full mechanical package make it ideal for permanent observatory setups where resolving faint galaxies, delicate nebula structure, and fine star clusters is the primary mission. This telescope demands a very capable mount and an experienced operator — and rewards both with outstanding results. Not recommended for beginners, travel rigs, or small mounts.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 185APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/c2b4bea2-0f12-43c1-9e93-7d7c2abccaf6.jpg\" alt=\"Askar 185APO Optical Path Diagram showing triplet APO lens element configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/e2b30ed3-eeee-4737-8da6-ce6ec4819809.jpg\" alt=\"Askar 185APO Spot Diagram showing star point quality across the image field\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0855437b-88bb-4bf3-a94b-6e7387b2169a.jpg\" alt=\"Askar 185APO Product Size Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0e9b7394-b105-4101-a09f-731375be6400.jpg\" alt=\"Askar 185APO Connection Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/9dc66b20-ddfc-42ae-b420-144571baef1b.jpg\" alt=\"Askar 185APO retractable lens tube instruction diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default","offer_id":53155880763503,"sku":"185APO","price":7489.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/185apo1.webp?v=1779736041"},{"product_id":"askar-203apo-triplet-apo-refractor-telescope","title":"Askar 203APO Triplet APO Refractor Telescope","description":"\u003cp\u003eThe \u003cstrong\u003eAskar 203APO\u003c\/strong\u003e is the flagship of the Askar APO series — an eight-inch (203mm) aperture, f\/7 triplet air-spaced apochromatic refractor from Askar (Jiaxing Sharpstar Optical Instrument Co., Ltd.). With a 1421mm focal length and a limiting magnitude of 13.3, the 203APO represents the pinnacle of what Askar has achieved in large-aperture refractor design, combining exceptional optical performance with a well-thought-out mechanical package that manages the weight and size challenges of this aperture class.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional and elite-level astrophotographers\u003c\/strong\u003e who demand the absolute maximum from a refractor platform\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservatory operators\u003c\/strong\u003e with permanent pier setups and heavy-payload mounts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-resolution galaxy, globular cluster, and planetary nebula imagers\u003c\/strong\u003e where aperture and focal length are everything\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced visual observers\u003c\/strong\u003e seeking the finest large-aperture refractor experience available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e203mm (8\") f\/7 triplet APO optics\u003c\/strong\u003e with one ED glass element — extraordinary light-gathering power with true APO colour correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLimiting magnitude of 13.3\u003c\/strong\u003e — the deepest in the Askar APO series; 20% larger aperture area than the 185APO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated retractable rear lens tube\u003c\/strong\u003e (150mm) with rudder-type locking ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e with 1:10 fine adjustment, 100mm travel, CNC machined anti-reflective interior\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° high-precision rotator\u003c\/strong\u003e with locking scale\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e500mm Losmandy dovetail plate included\u003c\/strong\u003e — the longest in the APO series, providing maximum balance flexibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended 402mm handle\u003c\/strong\u003e with slot design for finder scope or accessory mounting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced triplet tube ring design\u003c\/strong\u003e for maximum rigidity under heavy loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo finder scope bases\u003c\/strong\u003e flanking the focuser\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF-compatible focuser\u003c\/strong\u003e for motorized autofocus\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eShips in a protective aluminum case\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnique identification name ring\u003c\/strong\u003e on every unit\u003c\/li\u003e\n  \u003cli\u003eDedicated optional reducer and flattener accessories planned for future release\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eElite-level high-resolution deep-sky astrophotography with full-frame cameras\u003c\/li\u003e\n  \u003cli\u003eGalaxy imaging where 1421mm focal length and 203mm aperture reveal fine structural detail\u003c\/li\u003e\n  \u003cli\u003ePlanetary nebulae, globular clusters, and fine-structure emission nebula imaging\u003c\/li\u003e\n  \u003cli\u003eLRGB and narrowband filter imaging at extreme resolution\u003c\/li\u003e\n  \u003cli\u003eVisual observing with 1.25\" or 2\" eyepieces and diagonals\u003c\/li\u003e\n  \u003cli\u003eBinoviewer use (rear tube contracted)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRear thread:\u003c\/strong\u003e M84 female; includes 2\"\/1.25\" visual adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e 500mm Losmandy standard (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAF:\u003c\/strong\u003e Compatible with ZWO EAF and most motorized focusers (sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBinoviewer:\u003c\/strong\u003e Rear tube contracts for compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional reducer and flattener:\u003c\/strong\u003e Dedicated 203APO correctors are planned for future release by Askar\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt 23.5kg gross weight, requires an \u003cstrong\u003eextremely high-payload equatorial mount\u003c\/strong\u003e — 30kg+ imaging capacity is strongly recommended\u003c\/li\u003e\n  \u003cli\u003eThis is a \u003cstrong\u003epermanent observatory instrument\u003c\/strong\u003e — not suitable for portable use, travel, or small mounts\u003c\/li\u003e\n  \u003cli\u003eDedicated reducer and flattener accessories are \u003cstrong\u003enot yet available\u003c\/strong\u003e at time of listing — monitor Askar for release\u003c\/li\u003e\n  \u003cli\u003eStrictly for \u003cstrong\u003eexpert-level users\u003c\/strong\u003e with substantial astrophotography experience\u003c\/li\u003e\n  \u003cli\u003eEAF and all accessories sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 203APO compare to the 185APO?\u003c\/strong\u003e\u003cbr\u003e\nThe 203APO has 20% more aperture area, a deeper limiting magnitude of 13.3, a longer 1421mm focal length, a heavier 23.5kg gross weight, and a larger 500mm Losmandy dovetail. It requires the most capable mounts and is strictly an observatory-class instrument.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nAt 23.5kg gross, look for mounts with 30kg+ imaging payload — for example, a Skywatcher EQ8-R Pro, iOptron CEM120EC, Software Bisque Paramount, or similar observatory-grade mount. The 500mm Losmandy dovetail offers excellent balance range for this heavy OTA.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre there reducers or flatteners available?\u003c\/strong\u003e\u003cbr\u003e\nAskar has indicated that dedicated 203APO correctors are planned for future release. At the time of this listing, none are yet available. Please check with us for current availability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. The focuser accepts 1.25\" and 2\" diagonals and eyepieces. The rear tube contracts for binoviewer use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs motorized autofocus supported?\u003c\/strong\u003e\u003cbr\u003e\nYes — the focuser is compatible with ZWO EAF and most third-party motorized autofocusers (sold separately).\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eThe Askar 203APO is the ultimate expression of the APO series — an eight-inch apochromatic refractor that delivers extraordinary resolution, depth, and optical quality in a highly refined mechanical package. If you operate a permanent observatory with a mount capable of handling 23.5kg+, and you want the finest refractor in this aperture class, the 203APO is a genuinely exceptional choice. Be aware that dedicated corrector accessories are not yet available, so this telescope is currently best used at its native f\/7. Not suitable for beginners, portable rigs, or mounts with less than 30kg imaging payload.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following optical reports and technical diagrams are provided by Askar for the 203APO:\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/66691d1d-392d-4b67-9b66-a4732f6190d2.jpg\" alt=\"Askar 203APO Optical Path Diagram showing triplet APO lens element configuration\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/5f2d7d63-4c7a-4769-9bfb-033eab43cbb8.jpg\" alt=\"Askar 203APO Product Size Diagram with full mechanical dimensions\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/12134b7b-c16c-404a-ac13-8a0e52b0d6e5.jpg\" alt=\"Askar 203APO Connection Diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/0292f2d8-fe3c-461a-aa8a-4e473cfff802.jpg\" alt=\"Askar 203APO retractable lens tube instruction diagram\" style=\"max-width:100%;margin-bottom:12px;\"\u003e","brand":"Askar","offers":[{"title":"Default","offer_id":53155884400751,"sku":"203APO","price":12010.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/203apo1.webp?v=1779735843"},{"product_id":"william-optics-fluorostar-156-apo-refractor","title":"William Optics Fluorostar 156 APO Refractor","description":"\u003cp\u003eThe \u003cstrong\u003eWilliam Optics Fluorostar 156 APO\u003c\/strong\u003e is a premium large-aperture 156mm f\/7.8 triplet apochromatic refractor designed for serious visual astronomy and advanced astrophotography. With a 1217mm focal length, FPL-53 glass, Lanthanum element, 3.7-inch rack-and-pinion focuser, Losmandy dovetail, and a full-frame-capable image circle greater than 44mm, it is built for observers and imagers who want a high-performance refractor for demanding lunar, planetary, deep-sky, and imaging work.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Fluorostar 156 is best for advanced visual observers, experienced astrophotographers, and serious backyard or semi-permanent observatory users who want a large premium refractor with excellent colour correction, strong mechanical support, and enough aperture for detailed observing and imaging.\u003c\/p\u003e\n\u003cp\u003eThis telescope is especially well suited to customers who already own a capable equatorial mount and want a large refractor for galaxies, nebulae, lunar observing, planetary observing, and high-resolution deep-sky imaging.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e156mm triplet APO optics:\u003c\/strong\u003e Large-aperture refractor performance with excellent colour correction and contrast.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFPL-53 and Lanthanum glass:\u003c\/strong\u003e Designed to reduce chromatic aberration and deliver crisp visual and imaging performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1217mm focal length:\u003c\/strong\u003e Provides useful reach for galaxies, smaller nebulae, lunar detail, and planetary observing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/7.8 focal ratio:\u003c\/strong\u003e A strong optical balance for visual observing and serious imaging with optional flatteners or reducers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.7-inch rack-and-pinion focuser:\u003c\/strong\u003e Supports precise focusing and heavier imaging trains, with EAF compatibility noted by William Optics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLosmandy dovetail and three CNC tube rings:\u003c\/strong\u003e Provides solid mounting support for a large refractor system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Bahtinov mask in the dust cover:\u003c\/strong\u003e Helps achieve accurate focus for imaging and high-power observing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced visual astronomy\u003c\/li\u003e\n  \u003cli\u003eLunar and planetary observing\u003c\/li\u003e\n  \u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eGalaxy and nebula imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame, APS-C, and Micro Four Thirds camera setups\u003c\/li\u003e\n  \u003cli\u003ePermanent or semi-permanent backyard observatory setups\u003c\/li\u003e\n  \u003cli\u003eHigh-resolution refractor imaging with a capable mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe Fluorostar 156 includes an M92 rotator and M92 to 2-inch RotoLock adapter. William Optics lists compatibility with full-frame, APS-C, and Micro Four Thirds camera formats. For astrophotography, users should pair the telescope with the appropriate compatible flattener or reducer, such as FLAT68III 1.0x, FLAT7A 0.8x, Ultra Flat 0.79x, or FLAT8 0.72x, depending on the desired imaging setup.\u003c\/p\u003e\n\u003cp\u003eThe telescope uses a Losmandy-style dovetail and has an OTA weight of approximately 17 kg \/ 37.48 lb. Customers should confirm mount payload capacity, counterweight requirements, focuser support, camera spacing, guiding setup, and total imaging-train weight before purchase. The EQ mount shown in vendor images is not included.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Fluorostar 156 is not a lightweight grab-and-go telescope. Its size, 1120mm to 1330mm tube length, and 17 kg OTA weight mean it should be used with a capable equatorial mount and a stable setup. It is best suited to experienced users rather than casual beginners.\u003c\/p\u003e\n\u003cp\u003eFor best astrophotography results, a compatible flattener or reducer should be selected based on the camera format and desired focal ratio. The telescope itself is premium and versatile, but the complete imaging system requires careful planning around mount capacity, spacing, guiding, power, and accessories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the William Optics Fluorostar 156 good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt is best for experienced observers and astrophotographers. A committed beginner could grow into it, but the large size, mount requirements, and accessory planning make it better suited to advanced users.\u003c\/p\u003e\n\u003ch3\u003eCan the Fluorostar 156 be used for visual observing?\u003c\/h3\u003e\n\u003cp\u003eYes. It is a premium APO refractor and can deliver excellent lunar, planetary, double-star, and deep-sky visual views when paired with appropriate diagonals and eyepieces.\u003c\/p\u003e\n\u003ch3\u003eCan it be used for astrophotography?\u003c\/h3\u003e\n\u003cp\u003eYes. The Fluorostar 156 is designed for serious astrophotography and supports full-frame, APS-C, and Micro Four Thirds camera formats when paired with the correct imaging accessories.\u003c\/p\u003e\n\u003ch3\u003eDoes it require a flattener or reducer?\u003c\/h3\u003e\n\u003cp\u003eFor best imaging performance, especially with larger camera sensors, a compatible William Optics flattener or reducer is recommended. William Optics lists FLAT68III 1.0x, FLAT7A 0.8x, Ultra Flat 0.79x, and FLAT8 0.72x as compatible options.\u003c\/p\u003e\n\u003ch3\u003eWhat kind of mount is needed?\u003c\/h3\u003e\n\u003cp\u003eA capable equatorial mount with sufficient payload capacity is required. The OTA alone is approximately 17 kg \/ 37.48 lb before adding cameras, guide scopes, focusers, rings, plates, and other accessories.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the William Optics Fluorostar 156 for advanced observers and imagers who want a large premium APO refractor with serious visual and astrophotography capability. Choose it if you want high contrast, excellent colour correction, large-aperture refractor performance, and have the mount capacity to support it properly. Choose a smaller Fluorostar or Zenithstar model if portability, budget, or beginner-friendly setup is the priority.\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Red","offer_id":53159763640431,"sku":"A-F156RD-RP37","price":12417.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":53159763673199,"sku":"A-F156GD-RP37","price":12417.0,"currency_code":"CAD","in_stock":true},{"title":"Space Grey","offer_id":53159763705967,"sku":"A-F156TG-RP37","price":12417.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/william-optics-fluorostar-156-red-perspective-1.jpg?v=1779820817"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/collections\/img-4__18342.jpg?v=1767587530","url":"https:\/\/ontariotelescope.com\/collections\/refractors.oembed?page=2","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}