{"title":"Takahashi","description":"\u003cp\u003eTakahashi telescopes, correctors, eyepieces and accessories at Ontario Telescope and Accessories. Takahashi builds fluorite and ED apochromatic refractors, Dall-Kirkham Cassegrains and hyperbolic astrographs in Tokyo, along with the matched flatteners, reducers, extenders and adapters that complete each system. Every optical train is documented by a published system chart, so the parts fit together with known spacing rather than trial and error.\u003c\/p\u003e","products":[{"product_id":"takahashi-fs-60cb-60mm-f5-9-fluorite-refractor-ota","title":"Takahashi FS-60CB 60mm f\/5.9 Fluorite Doublet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60CB is Takahashi's 60 mm fluorite doublet apochromat, built in Tokyo and sold here as an optical tube assembly. At 355 mm focal length and f\/5.9 it is a short, light instrument — 413 mm long, 80 mm across the tube, and 1.1 kg — which puts it within reach of almost any tracking mount, including small travel heads and star trackers.\u003c\/p\u003e\u003cp\u003eWhat separates it from other 60 mm refractors is that the tube is a platform rather than a fixed configuration. The rear cell accepts a field flattener, a 0.85x focal reducer, or a 1.7x extender, and each one changes the telescope's working focal length and field. The same tube covers 300 mm at f\/5.0 for wide-field imaging, 370 mm at f\/6.2 with a flat 44 mm corrected circle, and 600 mm at f\/10 for lunar and planetary work.\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 small, genuinely apochromatic refractor that travels well and can be reconfigured rather than replaced. Wide-field imagers use it reduced, at 300 mm and f\/5.0, to frame large emission nebulae on an APS-C sensor. Visual observers use it at prime focus or extended for lunar detail and double stars. Eclipse chasers take it because it fits in a carry-on and holds focus in changing temperature.\u003c\/p\u003e\u003cp\u003eIt also works as a guide scope or a second imaging tube alongside a larger instrument, and as a high-quality daytime spotting scope with a diagonal and eyepiece.\u003c\/p\u003e\u003cp\u003eIf you are buying your first telescope and want one box that works out of the box, this is not that — it is an OTA, and you will be choosing a mount, a diagonal and an eyepiece alongside it. Tell us how you plan to use it and we will put the pieces together with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced fluorite doublet:\u003c\/strong\u003e two elements in two groups, with a genuine fluorite crystal element rather than an ED-glass substitute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard multicoatings:\u003c\/strong\u003e applied to the fluorite surfaces, which are softer and more hygroscopic than glass and need the protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e355 mm at f\/5.9:\u003c\/strong\u003e a 60 mm aperture in a 413 mm tube — short enough to balance on a light mount, long enough to reach useful magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e162 mm of back focus:\u003c\/strong\u003e generous rear spacing, which is what allows the flattener, reducer and extender modules to fit without running out of focus travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-and-pinion focuser\u003c\/strong\u003e with 30 mm of drawtube extension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80 mm dew shield:\u003c\/strong\u003e retracts over the tube for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.1 kg:\u003c\/strong\u003e light enough that mount payload is rarely the limiting factor.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective is a two-element air-spaced doublet built around a fluorite crystal element. Fluorite has anomalous partial dispersion that ordinary optical glass cannot reproduce, and in a doublet it brings the red, green and blue focal points close enough together that secondary spectrum is not the limiting factor at this aperture. In practice that means clean white stars and no violet fringing on the lunar limb or on bright planets — the failure mode that defines cheaper short refractors.\u003c\/p\u003e\u003cp\u003eBecause fluorite is softer and more sensitive to moisture than glass, Takahashi applies hard multicoatings to the exposed surfaces. These also cut internal reflections, which matters when the target is a bright object against a dark field.\u003c\/p\u003e\u003cp\u003eThe 162 mm of back focus is the design decision that makes the FS-60CB modular. Most short refractors leave just enough room for a camera and nothing else. The extra rear space here is what lets a 0.85x reducer, a 1.04x flattener or a 1.7x extender sit in the light path and still reach focus — so one tube covers f\/5.0 through f\/10.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imaging:\u003c\/strong\u003e with the 60C RD NC 0.85x reducer at 300 mm and f\/5.0, covering a 44 mm image circle — large nebulae, the Andromeda field, wide Milky Way regions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging at prime focus:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 370 mm and f\/6.2, corrected across 44 mm — full-frame coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary:\u003c\/strong\u003e with the EX CQ 1.7x extender at 600 mm and f\/10, which is the FS-60Q configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar eclipse work:\u003c\/strong\u003e short, light, and quick to set up on a travel mount, with a suitable solar filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e open clusters, double stars, lunar detail and bright planets with a diagonal and eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuiding and dual-rig imaging:\u003c\/strong\u003e as a second tube beside a larger instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60CB has a published system chart — included in the Downloads tab — that names every adapter, ring and spacer for each configuration, along with the exact distances. It is the fastest way to confirm a train before ordering, and it removes the guesswork that usually surrounds backfocus. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range in one table.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 162 mm at prime focus, measured from the rear end of the focuser to the focal plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e the FC\/FS MFL 1.04x needs the CA-60C ring (Takahashi part TKA20203) on this telescope, and gives 370 mm at f\/6.2 with a 44 mm corrected circle at 87.5 mm of back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal reducer:\u003c\/strong\u003e the 60C RD NC 0.85x brings the tube to 300 mm at f\/5.0 with a 44 mm corrected circle at 56.0 mm of back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e the EX CQ 1.7x converts the tube to the FS-60Q configuration — 600 mm at f\/10, 44 mm circle, 158.4 mm of back focus. The EX-C2X and EX-Q extenders each have their own system chart, both included below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual train:\u003c\/strong\u003e a 1.25-inch or 2-inch diagonal and eyepiece attach through the matching Takahashi visual adapter. The Takahashi 1.25-inch prism diagonal is a direct fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail are included. At 1.1 kg the tube suits small equatorial and travel mounts once a camera or diagonal is added.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder and rings:\u003c\/strong\u003e tube rings, a dovetail plate and a finder bracket are separate purchases. Takahashi recommends a 6x30 finder for this tube.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure which corrector and ring combination your camera needs, send us your camera model, filter thickness and any spacers you already own and we will work the train out with you before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, tube rings, dovetail, diagonal, eyepiece and finder are all sold separately. We can quote a complete setup if that is easier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field needs a corrector.\u003c\/strong\u003e At prime focus the field curves, as it does on any short doublet. The FC\/FS MFL 1.04x flattens it to 44 mm; the 60C RD NC 0.85x reducer flattens and shortens at once.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe flattener needs its own CA ring.\u003c\/strong\u003e On the FS-60CB that is the CA-60C (TKA20203). The system chart in the Downloads tab lists the part for every configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite needs ordinary care.\u003c\/strong\u003e The coatings protect it, and the retractable dew shield helps in dew. Standard optical cleaning practice is all it asks for.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm is 60 mm.\u003c\/strong\u003e It resolves and gathers light like a 60 mm aperture, and its strength is field, portability and colour correction rather than reach on faint galaxies.\u003c\/li\u003e\n\u003c\/ul\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. At prime focus it is a diagonal and an eyepiece and you are observing. Imaging trains take more thought because the spacing matters, and Takahashi publishes a system chart for every configuration — it is in the Downloads tab, and it names the parts and distances so there is no trial and error. Send us your camera details and we will confirm the train with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWide-field imaging and portable visual work. Reduced to 300 mm at f\/5.0 it frames large nebulae; extended to 600 mm at f\/10 it shows lunar and planetary detail. Few telescopes cover that range without swapping tubes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography without buying anything else?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYou can attach a camera at prime focus, but the field will curve at the edges. For flat stars across an APS-C or full-frame sensor you need the flattener and its CA ring, or the 0.85x reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FS-60CB and the FS-60Q?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FS-60Q is the FS-60CB with the EX CQ 1.7x extender module fitted — 600 mm at f\/10 instead of 355 mm at f\/5.9. Buying the CB and adding the extender later reaches the same place.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work on a star tracker?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 1.1 kg it is within range of the larger travel trackers once a camera is attached, though the total load and the tracker's rated capacity are worth checking together. Tell us which tracker you have and we will confirm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs fluorite better than ED glass?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFluorite is a crystal, not a glass, and its dispersion behaviour is what a two-element design needs to control colour. It is why this doublet performs like designs that otherwise take three elements. It is also softer, which is why the coatings matter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a case?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — the OTA ships without a case.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 60 mm fluorite apochromat at 355 mm and f\/5.9 that reconfigures to 300 mm at f\/5.0 or 600 mm at f\/10, weighs 1.1 kg, and comes with published system charts for every one of those configurations. Add a mount, a corrector matched to your camera, and it covers wide-field imaging through planetary detail from one tube.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046912643183,"sku":"TAK-TSK06210\/TSK06010","price":1158.3,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fs-60cb_1_2_3.jpg?v=1786907612"},{"product_id":"takahashi-fc-fs-multi-flattener-1-04x-field-flattener","title":"Takahashi FC\/FS Multi-Flattener 1.04x Field Flattener","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC\/FS Multi-Flattener 1.04x is Takahashi's universal field flattener for the FC and FS doublet refractor families. It replaces the separate model-specific flatteners Takahashi previously sold: one optic now covers the whole range, with a telescope-specific CA ring setting the correct spacing for each tube.\u003c\/p\u003e\u003cp\u003eTwo elements in one group, 40 mm long, 60 mm across and 110 g. It threads M56 x 0.75 female on the telescope side and presents M52 x 0.75 male to your camera adapter, with 40 mm of backfocus behind it. The 1.04x factor means focal length moves only slightly — a 355 mm FS-60CB becomes 370 mm — so this is a corrector, not a focal-length changer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is what you need if you image with an FC or FS doublet and your stars go elongated toward the corners of the frame. At prime focus these telescopes have a curved field; the flattener corrects it and gives a 44 mm flat circle on the shorter tubes — enough to cover APS-C completely and most of full frame.\u003c\/p\u003e\u003cp\u003eIf you observe visually with an eyepiece, this has no application in that train. It corrects a photographic field for a sensor.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo elements in one group:\u003c\/strong\u003e a cemented pair that corrects field curvature without adding measurable chromatic error of its own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.04x magnification factor:\u003c\/strong\u003e focal length and focal ratio shift only marginally — the point is the flat field, not a speed change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44 mm corrected image circle\u003c\/strong\u003e on FS-60CB, FC-76D, FC-100D, FC-50, FC-65, FC-76 and FS-78; \u003cstrong\u003e40 mm\u003c\/strong\u003e on FC-100DL, FC-60, FC-100, FC-125, FS-102, FS-128 and FS-152.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM56 x 0.75 female in, M52 x 0.75 male out:\u003c\/strong\u003e standard Takahashi interfaces on both faces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 mm backfocus:\u003c\/strong\u003e the distance from the rear thread to the sensor, which your camera adapter stack must total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e110 g and 40 mm long:\u003c\/strong\u003e adds almost nothing to focuser load or train length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne optic, whole family:\u003c\/strong\u003e replaces the older per-telescope flatteners; the CA ring does the model-specific work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA doublet refractor focuses a curved surface, not a plane. Stars at the centre of the frame come to focus in front of the stars at the corners, so a flat sensor cannot record both sharply at once — which is why uncorrected short refractors show round stars in the middle and elongated ones at the edges.\u003c\/p\u003e\u003cp\u003eThe MFL 1.04x introduces the opposite curvature. Two elements in a single group bend the focal surface flat across the working circle while adding only 4% to the focal length. Because it is a corrector rather than a reducer, it does not compress the image or brighten the field — an FS-60CB goes from 355 mm at f\/5.9 to 370 mm at f\/6.2, and the corners come into line with the centre.\u003c\/p\u003e\u003cp\u003eWhat makes it universal is that the optical correction is common to the FC and FS doublets while only the required spacing differs. Takahashi puts that difference in the CA ring rather than in the glass, so a single flattener covers telescopes from 50 mm to 152 mm of aperture.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi-fc-fs-mfl-104x-flattener-dimensional-diagram.png?v=1786907633\" alt=\"Dimensional diagram of the Takahashi FC\/FS MFL 1.04x field flattener showing M56x0.75 input thread, M52x0.75 output thread, 40 mm backfocus and 40 mm overall length\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imaging with a DSLR, mirrorless or cooled astro camera\u003c\/strong\u003e on any current FC or FS doublet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPS-C and full-frame coverage:\u003c\/strong\u003e the 44 mm circle covers APS-C entirely and reaches most of a full-frame corner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacing an older model-specific flattener\u003c\/strong\u003e when you own more than one FC or FS tube and want one corrector for both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field mosaics\u003c\/strong\u003e where edge star shape has to match between panels.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe flattener and the CA ring are bought together — the ring is what sets the metal back distance for your particular telescope. Takahashi publishes the pairing:\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTakahashi part\u003c\/th\u003e\n\u003cth\u003eCA ring\u003c\/th\u003e\n\u003cth\u003eTelescope\u003c\/th\u003e\n\u003cth\u003eMetal back distance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA20203\u003c\/td\u003e\n\u003ctd\u003eCA-60C\u003c\/td\u003e\n\u003ctd\u003eFS-60CB\u003c\/td\u003e\n\u003ctd\u003e87.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA18203\u003c\/td\u003e\n\u003ctd\u003eCA-76\u003c\/td\u003e\n\u003ctd\u003eFC-76D, FC-76, FS-78\u003c\/td\u003e\n\u003ctd\u003e75.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA19203\u003c\/td\u003e\n\u003ctd\u003eCA-100\u003c\/td\u003e\n\u003ctd\u003eFC-100D, FC-100\u003c\/td\u003e\n\u003ctd\u003e71.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA01203\u003c\/td\u003e\n\u003ctd\u003eCA-50\u003c\/td\u003e\n\u003ctd\u003eFC-50\u003c\/td\u003e\n\u003ctd\u003e84.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA03203\u003c\/td\u003e\n\u003ctd\u003eCA-65\u003c\/td\u003e\n\u003ctd\u003eFC-60, FC-65\u003c\/td\u003e\n\u003ctd\u003e78.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA07203\u003c\/td\u003e\n\u003ctd\u003eCA-125\u003c\/td\u003e\n\u003ctd\u003eFC-100DL, FS-102, FC-125\u003c\/td\u003e\n\u003ctd\u003e69.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTKA24203\u003c\/td\u003e\n\u003ctd\u003eCA-128\u003c\/td\u003e\n\u003ctd\u003eFS-128, FS-152\u003c\/td\u003e\n\u003ctd\u003e66.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera side:\u003c\/strong\u003e M52 x 0.75 male, with 40 mm of backfocus to the sensor. Your camera adapter, filter drawer and spacers together need to total that 40 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters count:\u003c\/strong\u003e a filter in the light path adds roughly one third of its thickness to the optical path. A 2 mm filter shifts focus by about 0.7 mm, which comes out of the spacer stack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible with the FOA-60 or SKY90.\u003c\/strong\u003e Both use different optical designs. The FOA-60 has its own 0.93x flattener; ask us and we will point you to the right part.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you tell us your telescope, camera and any filters you use, we will work out the spacer stack with you and confirm the CA ring before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe CA ring is a separate purchase.\u003c\/strong\u003e The flattener does not include one, and it will not reach correct spacing without the ring matched to your telescope. The table above names it; we stock the range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a photographic corrector.\u003c\/strong\u003e It has no application in a visual train with an eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus is 40 mm from the rear thread.\u003c\/strong\u003e The corner star shape follows how closely your adapter stack hits that figure, and the diagram above gives you the reference distances to measure against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe corrected circle depends on the telescope.\u003c\/strong\u003e 44 mm on the shorter tubes, 40 mm on the longer ones — the list above tells you which applies. A full-frame sensor has a 43.3 mm diagonal, so full-frame corners are covered on the 44 mm group and just short on the 40 mm group.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt does not fit the FOA-60 or SKY90.\u003c\/strong\u003e Those telescopes take their own correctors.\u003c\/li\u003e\n\u003c\/ul\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\u003eIt threads on directly — the CA ring goes on the telescope, the flattener onto the ring, and your camera adapter behind it. The work is in getting the 40 mm backfocus right on the camera side, and that is arithmetic rather than trial and error: add up your adapter, filter drawer and spacers to 40 mm. Send us your camera and filter setup and we will do the sum with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change my focal length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSlightly. The 1.04x factor takes a 355 mm FS-60CB to 370 mm and f\/5.9 to f\/6.2. It is a flattener, not a reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich CA ring do I need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe table above pairs every FC and FS telescope with its ring and metal back distance. For an FS-60CB it is the CA-60C, Takahashi part TKA20203.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it cover a full-frame sensor?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn the 44 mm group — FS-60CB, FC-76D, FC-100D, FC-50, FC-65, FC-76, FS-78 — yes, a full-frame diagonal of 43.3 mm sits inside the corrected circle. On the 40 mm group the extreme corners fall outside it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with a filter in the train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. Allow for the focus shift a filter introduces — about a third of its thickness — when you build the spacer stack to 40 mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and the older flatteners?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi previously sold a flattener per telescope. This one optic covers the whole FC and FS doublet range, with the CA ring handling the model-specific spacing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work on my FOA-60?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — the FOA-60 and SKY90 use different optical designs. The FOA-60 takes the dedicated 0.93x flattener.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: one 110 g corrector that flattens the field across the whole FC and FS doublet range, giving a 44 mm circle on the shorter tubes and 40 mm on the longer ones, at 40 mm of backfocus. Pair it with the CA ring for your telescope and it does its job — and we will confirm which ring and what spacing before you order.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046965858415,"sku":"TAK-TKA00582","price":303.16,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00582_1.jpg?v=1786907709"},{"product_id":"takahashi-1-25-inch-multicoated-prism-star-diagonal","title":"Takahashi 1.25\" Multicoated Prism Star Diagonal","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 1.25-inch star diagonal built to Takahashi's mechanical standard, using a prism rather than a mirror. It takes a 1.25-inch male barrel into your focuser and presents a 1.25-inch female barrel with a clamp ring for the eyepiece, bending the light path 90° so you look down into a telescope pointed up.\u003c\/p\u003e\u003cp\u003eThe optical path through it measures 63.5 mm — the figure your focuser needs to accommodate, and the one to use when you are calculating whether an eyepiece will still reach focus. It weighs 135 g and measures 60 x 43 x 40 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is the part that makes visual observing comfortable. Without a diagonal, a refractor pointed near the zenith puts the eyepiece near the ground. With one, you look down at a natural angle.\u003c\/p\u003e\u003cp\u003eIt suits refractors, Schmidt-Cassegrains and Maksutovs — anything with a 1.25-inch focuser or a visual back that accepts a 1.25-inch barrel. If you are already using Takahashi eyepieces, the mechanical fit is exact.\u003c\/p\u003e\u003cp\u003eIt is a visual component. Imaging trains connect a camera straight through and do not use a diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrism, not a mirror:\u003c\/strong\u003e total internal reflection at the prism face, so there is no reflective coating to age, tarnish or degrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulticoated surfaces:\u003c\/strong\u003e applied to the entry and exit faces to cut reflection losses and internal ghosting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-marring compression ring:\u003c\/strong\u003e clamps the eyepiece barrel evenly instead of driving a set screw into it, so barrels stay unmarked and the eyepiece sits square.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25-inch male in, 1.25-inch female out:\u003c\/strong\u003e standard 31.75 mm fittings on both sides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e63.5 mm metal backfocus length:\u003c\/strong\u003e the optical path the diagonal adds to your train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 x 43 x 40 mm, 135 g:\u003c\/strong\u003e compact enough that focuser balance barely changes.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFive-year manufacturer warranty.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA prism diagonal turns the light path using total internal reflection at the hypotenuse face of a glass prism, rather than bouncing it off an aluminised mirror surface. Total internal reflection is a property of the glass-air boundary itself, so nothing is lost to coating efficiency and nothing degrades with age — an aluminised mirror slowly dulls, a prism does not.\u003c\/p\u003e\u003cp\u003eThe trade is that light passes through glass, so the entry and exit faces are multicoated to hold down surface reflections and the scatter that would otherwise reduce contrast on planetary detail. At f\/6 and slower, which covers most of the Takahashi refractor range in visual use, a prism of this quality introduces no aberration that the eye can separate from the telescope's own.\u003c\/p\u003e\u003cp\u003eThe compression ring is the mechanical half of the design. A single set screw pushes an eyepiece barrel off-axis and leaves a dimple; the ring here spreads the clamping force around the barrel, which keeps the eyepiece square to the optical axis and the barrel unmarked.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing with a refractor\u003c\/strong\u003e — lunar detail, planets, double stars, open clusters at a comfortable viewing angle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchmidt-Cassegrain and Maksutov visual backs\u003c\/strong\u003e that accept a 1.25-inch barrel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZenith observing\u003c\/strong\u003e, where a straight-through eyepiece position would be unusable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrestrial and daytime use\u003c\/strong\u003e with a spotting eyepiece, noting that a star diagonal gives a mirror-reversed image.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser side:\u003c\/strong\u003e 1.25-inch (31.75 mm) male barrel — fits any 1.25-inch focuser or visual back directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepiece side:\u003c\/strong\u003e 1.25-inch (31.75 mm) female with clamp ring, so any 1.25-inch eyepiece seats in it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical path:\u003c\/strong\u003e 63.5 mm. Add this to your train when checking that an eyepiece reaches focus — short-focus refractors with limited inward travel are where it matters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch focusers:\u003c\/strong\u003e use a 2-inch to 1.25-inch reducing adapter, or move to a 2-inch diagonal if you plan to use 2-inch eyepieces. We stock both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi visual adapters:\u003c\/strong\u003e the FS-60CB and the FC\/FS range each have a matching visual adapter that presents the correct barrel to this diagonal. Ask us which one your tube takes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage orientation:\u003c\/strong\u003e a star diagonal produces a right-side-up but mirror-reversed image. That is normal for astronomical use; for terrestrial viewing an erecting prism gives a correctly oriented image.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds 63.5 mm to the optical path.\u003c\/strong\u003e Most refractors have ample travel for that, and Takahashi publishes a backfocus table — included in the Downloads tab — covering the range if you want to check before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25-inch only.\u003c\/strong\u003e It will not take 2-inch eyepieces. If you own or plan to own 2-inch wide-field eyepieces, a 2-inch diagonal is the better starting point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a visual component.\u003c\/strong\u003e Camera trains connect straight through and do not use a diagonal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe view is mirror-reversed.\u003c\/strong\u003e Standard for astronomical diagonals and of no consequence at the eyepiece; worth knowing if you also plan to use the telescope for daytime viewing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished weight differs between Takahashi sources\u003c\/strong\u003e — 135 g on the European specification sheet, 3 oz (85 g) in the North American listing. Either way it is light enough not to affect focuser balance.\u003c\/li\u003e\n\u003c\/ul\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. The barrel slides into your focuser, the eyepiece goes into the clamp ring, and the ring tightens by hand. There is nothing to align or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePrism or mirror — which is better?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA prism uses total internal reflection, so there is no coating to degrade over the years, and it tends to hold contrast well on planetary detail at moderate focal ratios. Mirror diagonals are usually preferred at very fast focal ratios and in 2-inch formats. For visual work on a Takahashi refractor, a prism of this quality is a sound match.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my telescope?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt fits any 1.25-inch focuser or visual back directly. On a 2-inch focuser you need a reducing adapter; on a Takahashi tube with a proprietary rear thread you need the matching visual adapter. Tell us your telescope and we will confirm the part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill my eyepieces still reach focus?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diagonal adds 63.5 mm of optical path. Most refractors have enough travel to absorb it. The Takahashi backfocus table below covers the range, and we are happy to check a specific combination for you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — imaging trains connect the camera directly to the corrector or telescope. This is for eyepiece observing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it mark my eyepiece barrels?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. The compression ring clamps evenly around the barrel rather than pressing a screw point into it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is in the box?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe diagonal itself. Eyepieces and any focuser adapters are separate.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 135 g multicoated prism diagonal that adds 63.5 mm to a 1.25-inch visual train, clamps eyepieces without marking them, and has no reflective coating to age. It is the piece that makes a refractor comfortable to observe with.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046969888879,"sku":"TAK-TKA00547","price":167.31,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00547_1.jpg?v=1786907778"},{"product_id":"takahashi-toe-10mm-eyepiece","title":"Takahashi TOE 10mm Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOE 10 mm sits at the long end of Takahashi's TOE planetary eyepiece line. It gives a 58° apparent field with 15 mm of eye relief, from six elements arranged in four groups — more glass than a classic orthoscopic, used to widen the field and push the eye point further back without giving up the contrast that makes an ortho worth using on planets.\u003c\/p\u003e\u003cp\u003eAt 10 mm it is the eyepiece you reach for when you want detail without pushing to the seeing limit: 35x on an FS-60CB, 76x on an FC-76D, 110x on a Mewlon 210.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe planets, the Moon and double stars and want an eyepiece whose contrast keeps up with a good apochromat. The 58° field is deliberately moderate — wide enough that the target does not drift out of view quickly on an undriven mount, narrow enough that the design can stay simple and well corrected.\u003c\/p\u003e\u003cp\u003eThe 15 mm eye relief is the practical difference from a traditional orthoscopic. Short-focal-length orthos put your eye almost against the lens; 15 mm gives room to observe comfortably, including over glasses in many cases.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 mm focal length:\u003c\/strong\u003e medium-to-high power on most telescopes — the range where planetary detail appears without over-magnifying average seeing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e58° apparent field:\u003c\/strong\u003e wider than a classic orthoscopic, and enough that a planet stays in view for a usable interval on an undriven mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 mm eye relief:\u003c\/strong\u003e a comfortable eye position rather than the pressed-in view short orthos demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix elements in four groups:\u003c\/strong\u003e the extra elements buy field width and eye relief while holding correction across the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal with the rest of the TOE range:\u003c\/strong\u003e swap focal lengths mid-session with only a touch of refocusing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackened element edges and multi-layer coatings:\u003c\/strong\u003e suppress the internal scatter that washes out low-contrast planetary detail.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePlanetary observing is a contrast problem before it is a resolution problem. The features that matter — belt structure on Jupiter, the Cassini division, subtle shading on Mars — are low-contrast detail sitting on a bright disc, and any scattered light inside the eyepiece raises the background and buries them. That is why the classic four-element orthoscopic held on for decades: fewer air-glass surfaces, less scatter.\u003c\/p\u003e\u003cp\u003eThe TOE design accepts six elements in four groups and then attacks the scatter directly. Multi-layer coatings cut reflection at each surface, and the element edges are blackened so light striking them is absorbed rather than bounced back into the light path. The result keeps orthoscopic-class contrast while delivering a 58° field and 15 mm of eye relief — both well beyond what a four-element design produces at this focal length.\u003c\/p\u003e\u003cp\u003eParfocality across the range is a working convenience that matters more than it sounds: changing power on a planet mid-session without hunting for focus keeps you on the target while the seeing is steady.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary detail\u003c\/strong\u003e — Jupiter's belts and festoons, Saturn's rings and division, Martian surface shading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing\u003c\/strong\u003e — crater walls, rilles and terminator detail at medium-high power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting\u003c\/strong\u003e where contrast and clean star images matter more than field width.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrighter open clusters and planetary nebulae\u003c\/strong\u003e at medium power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime and terrestrial use\u003c\/strong\u003e with a suitable diagonal, where the long eye relief is comfortable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 10. An FS-60CB at 355 mm gives 35x; an FC-100DZ at 800 mm gives 80x; a Mewlon 210 at 2415 mm gives 242x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e in a refractor you will normally use it behind a star diagonal. The Takahashi 1.25-inch prism diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal range:\u003c\/strong\u003e parfocal with the other TOE eyepieces, so changing focal length needs only a touch of refocusing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e standard eyepiece filters thread into the barrel where the barrel size matches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e58° is a moderate field, by design.\u003c\/strong\u003e If you want a 82° or 100° immersive view for sweeping deep-sky fields, this is not that eyepiece — it trades field width for contrast, which is the right trade on a planet and the wrong one on a large nebula.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification depends on your telescope.\u003c\/strong\u003e The same 10 mm gives 35x on a short 60 mm refractor and 242x on a Mewlon 210. Tell us your telescope and we will tell you where this lands in your eyepiece set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a visual eyepiece.\u003c\/strong\u003e Camera trains connect directly to the telescope or its corrector.\u003c\/li\u003e\n\u003c\/ul\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 — it drops into a 1.25-inch diagonal or focuser and you focus. Nothing to assemble or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 10. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to a classic orthoscopic?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA four-element ortho at 10 mm gives roughly a 42° to 45° field and short eye relief. The TOE gives 58° and 15 mm of eye relief from six elements, with coatings and blackened edges doing the contrast work the simpler design got from having fewer surfaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt works well on brighter open clusters and planetary nebulae. For large faint objects a wider field and longer focal length eyepiece suits better — this one is built around contrast at medium-high power.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e15 mm of eye relief is workable for many glasses wearers, though it depends on your frames and how far they hold the lens from your eye.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with my Barlow or extender?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — a 2x Barlow makes it behave as a 5 mm. Takahashi's Ortho Extender 2X and 4X are the matched options.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with my other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is parfocal with the rest of the TOE range. Across other Takahashi families, expect to refocus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 10 mm planetary eyepiece with a 58° field and 15 mm of eye relief, built from six elements with the coatings and blackened edges that keep low-contrast detail visible. It is the comfortable medium-power eyepiece in a planetary set.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046970871919,"sku":"TAK-TKA00618","price":480.48,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00618.jpg?v=1786907851"},{"product_id":"takahashi-extender-q-2-inch-adapter","title":"Takahashi Extender-Q 2\" Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 2-inch adapter that fits the visual section of the Takahashi Extender-Q, opening the train up from Takahashi's M42 x 0.75 fitting to a standard 50.8 mm barrel. With it in place the Extender-Q accepts 2-inch star diagonals and 2-inch eyepieces — the wide-field oculars that will not fit a 1.25-inch train at all.\u003c\/p\u003e\u003cp\u003eTakahashi lists it as the 50.8 Adapter (EX-Q), part TKA00596, with a published light path length of 39.5 mm. It is machined from black-anodized aluminium and retains the accessory with two thumbscrews rather than one, which is what keeps a heavy diagonal square rather than letting it tilt on a single contact point.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is the part you need if you use the Extender-Q visually and own 2-inch eyepieces or a 2-inch diagonal. The Extender-Q's own visual section does not take them directly; this adapter is what bridges it.\u003c\/p\u003e\u003cp\u003eIt has no application in an imaging train — a camera connects to the Extender-Q through the photographic path, not through a 2-inch visual barrel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42 x 0.75 female telescope side:\u003c\/strong\u003e threads directly onto the Extender-Q's visual section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) accessory side:\u003c\/strong\u003e takes standard 2-inch diagonals and eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e39.5 mm light path length:\u003c\/strong\u003e Takahashi's published figure for what this adapter contributes to the optical train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual thumbscrews:\u003c\/strong\u003e two contact points hold a heavy diagonal square instead of letting it pivot on one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack-anodized aluminium:\u003c\/strong\u003e non-reflective inside the light path and light enough not to shift focuser balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-play fit:\u003c\/strong\u003e machined to Takahashi's mechanical tolerance, so a loaded diagonal does not rock in the seat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsing 2-inch wide-field eyepieces\u003c\/strong\u003e behind an Extender-Q on a Takahashi refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting a 2-inch star diagonal\u003c\/strong\u003e where the extra optical path and larger clear aperture are wanted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgrading an existing Extender-Q setup\u003c\/strong\u003e from a 1.25-inch to a 2-inch visual train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolding heavier oculars securely\u003c\/strong\u003e where a single-screw fitting would allow tilt.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits the Takahashi Extender-Q visual section\u003c\/strong\u003e via M42 x 0.75 female thread. It is designed for that fitting specifically and is not a universal 2-inch adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory side:\u003c\/strong\u003e 2-inch (50.8 mm), holding 2-inch diagonals and eyepieces with two thumbscrews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight path length is 39.5 mm.\u003c\/strong\u003e That is the figure to add when you are checking a train against your focus travel. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists the light path length of every Takahashi adapter alongside the back focus figures for each telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical only.\u003c\/strong\u003e There is no optical element in it — it does not correct, magnify or reduce.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure whether your eyepieces will still reach focus with this in the train, send us your telescope, Extender-Q configuration and eyepiece list and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt requires an Extender-Q.\u003c\/strong\u003e The adapter threads onto that product's visual section and is not a standalone telescope accessory. If you do not own one, tell us what you are trying to connect and we will find the right part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a mechanical adapter.\u003c\/strong\u003e No glass, no correction, no change to focal length or focal ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual use only.\u003c\/strong\u003e Imaging trains take the photographic path through the Extender-Q instead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds 39.5 mm to the optical path.\u003c\/strong\u003e On tubes with limited inward travel that figure is worth checking against the back focus guide before ordering — and we will check a specific combination for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch accessories are heavier.\u003c\/strong\u003e The dual thumbscrews are there for that reason, and the fit is machined without play, so a loaded diagonal sits square.\u003c\/li\u003e\n\u003c\/ul\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 — it threads onto the Extender-Q visual section, and the diagonal or eyepiece slides in and is held by the two thumbscrews. There is nothing to align.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need an Extender-Q to use it?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. It is made for that product's M42 x 0.75 visual section. Tell us what you are connecting and we will confirm the right adapter if you do not have one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it change magnification or focal length?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is a mechanical adapter with no optical element. The Extender-Q itself supplies the 1.6x factor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does it add to my optical train?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e39.5 mm, per Takahashi's published figure. The back focus guide on this site lists it alongside every other Takahashi adapter so you can add up a train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with 1.25-inch eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWith a 2-inch to 1.25-inch reducing adapter, yes. We stock those.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it made of?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBlack-anodized aluminium, machined to Takahashi's standard tolerance so the seat holds a loaded diagonal without play.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: Takahashi's 50.8 Adapter for the Extender-Q — M42 x 0.75 in, 2-inch out, 39.5 mm of light path, held on two thumbscrews so a heavy ocular sits square. Purely mechanical, and it is what lets a 2-inch diagonal onto an Extender-Q train.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54046972280943,"sku":"TAK-TKA00596","price":111.54,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00596_1_2400x2400_1708d20a-66db-4de6-8917-07971fcc80a8.jpg?v=1786907918"},{"product_id":"takahashi-epsilon-e-160ed-160mm-f-3-3-hyperbolic-astrograph-ota","title":"Takahashi Epsilon E-160ED 160mm f\/3.3 Hyperbolic Astrograph OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-160ED is a 160 mm hyperbolic Newtonian astrograph from Takahashi, built for deep-sky imaging at a native f\/3.3. A hyperbolic primary mirror, flat secondary, and an integrated field-flattening corrector work together inside the tube, so there is no separate flattener to buy, align, or space out. The 530 mm focal length puts a flat 44 mm image circle 56.2 mm behind the focuser, and the published tube weight of 6.9 kg keeps it well inside the payload of a mid-size equatorial mount carrying a full imaging train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you image deep-sky targets — nebulae, galaxies, and star clusters — and want the light-gathering speed of f\/3.3 without the curved focal plane and flat-field-adapter fuss of a Schmidt camera design. It suits an imager already comfortable with reflector collimation, since a Newtonian-derived optical path benefits from periodic checking. It is not built for eyepiece observing — the fast mirror and integrated flattener are optimized for a sensor at a fixed backfocus, not a diagonal and eyepiece.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHyperbolic primary + flat secondary + integrated flattener:\u003c\/strong\u003e corrects coma and field curvature inside the tube, with no separate corrector lens to purchase or space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/3.3 native speed:\u003c\/strong\u003e a 530 mm focal length gathers light quickly, shortening exposure times for faint targets compared with a conventional f\/6–f\/8 reflector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44 mm image circle:\u003c\/strong\u003e covers full-frame and APS-C sensors, with the design holding spot size under roughly 3 micrometers at the field edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversized rack-and-pinion focuser with integrated Camera Angle Adjuster:\u003c\/strong\u003e lets you rotate the imaging train to frame a target without loosening the tube rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable central mirror cover:\u003c\/strong\u003e exposes the primary to ambient air for faster thermal acclimation before a session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen spider-vane secondary support:\u003c\/strong\u003e reduces scattered light and diffraction spikes around bright stars.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-160ED's optical path combines a 160 mm hyperbolic primary mirror with a flat secondary and a built-in multi-element field flattener, a configuration Takahashi calls a modified hyperbolic Newtonian. Unlike a Schmidt camera, the focal plane is flat and the corrective elements live inside the tube rather than as a separate accessory train, which keeps the back focus fixed at 56.2 mm from the focuser's rear end. At f\/3.3 the design cuts exposure times sharply against slower reflectors while holding the 44 mm image circle flat and coma-free. An optional Ɛ-EX 160ED extender changes the configuration to 800 mm at f\/5.0, with the same 44 mm image circle and 56.2 mm back focus, for imagers who want tighter framing on the same optical tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eWide- to moderate-field deep-sky astrophotography of nebulae, galaxies and star clusters; narrowband and broadband imaging with a cooled CMOS or CCD camera; observatory or portable imaging rigs built around a fast reflector rather than a refractor.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 56.2 mm back focus is measured from the rear end of the focuser to the focal plane and is fixed by the integrated flattener — there is no field-flattener spacing to calculate for prime focus imaging. Camera trains, filter drawers and off-axis guiders all need to fit inside that figure, so it is worth checking your full imaging stack against it before ordering. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e covers this and the Ɛ-EX 160ED extender configuration in detail. Because this is a Newtonian-derived design, periodic collimation is part of ownership — Takahashi's collimating tools work with this tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot built for eyepiece observing:\u003c\/strong\u003e the fast mirror and fixed-backfocus flattener are matched to a camera sensor, not a diagonal and eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCollimation is periodic maintenance, not a one-time setup:\u003c\/strong\u003e like any fast Newtonian-derived optic, the mirrors benefit from a collimation check after transport, and Takahashi's own collimating eyepiece and telescope handle it directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMount and tripod are not included:\u003c\/strong\u003e this listing is the optical tube assembly only.\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\u003eThe optical side is straightforward — the flattener is built in, so there is no separate corrector to space out. The part that takes practice is collimation, which any fast Newtonian-derived design needs checked periodically; Takahashi's collimating tools are built for this tube.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDeep-sky astrophotography at a fast focal ratio — nebulae, galaxies and clusters that benefit from short sub-exposures at f\/3.3.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt has no real application in a visual eyepiece train; the flattener and back focus are set for a camera sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat cameras does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny cooled CMOS or CCD astronomy camera that can reach the 56.2 mm back focus with its own nosepiece, filter wheel or off-axis guider included in that figure — send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the Epsilon-180ED?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 180ED steps up to a 180 mm aperture and a faster f\/2.8, with a larger, heavier tube; the 160ED is the lighter, more mount-friendly option at f\/3.3.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 160 mm f\/3.3 hyperbolic astrograph with the flattener built in, delivering a flat 44 mm image circle at a fixed 56.2 mm back focus for fast deep-sky imaging.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047049285743,"sku":"TAK-TEK16010","price":5648.5,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TEK16010_1.jpg?v=1786911556"},{"product_id":"takahashi-fsq-80fc-80mm-f-5-6-quintuplet-astrograph-refractor-ota","title":"Takahashi FSQ-80FC 80mm f\/5.6 Quintuplet Astrograph Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FSQ-80FC is Takahashi's compact 80 mm imaging refractor, built around a 5-element optical design with dual fluorite elements. At a native 450 mm focal length and f\/5.6, it is intended as a wide-field astrograph rather than a visual scope — the flat field and 50 mm image circle cover a full-frame sensor without a separate flattener. Takahashi lists a tube weight of approximately 4.1 kg.\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 wide-field, grab-and-go imaging refractor that travels light — the compact tube and roughly 4.1 kg weight suit a smaller equatorial mount or a travel setup, and the flat 50 mm image circle covers full-frame sensors without an accessory flattener to buy separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-element optical design with dual fluorite elements:\u003c\/strong\u003e corrects chromatic aberration and field curvature within the tube, without a separate corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e450 mm focal length at f\/5.6:\u003c\/strong\u003e a fast, wide field of view suited to nebulae, star clusters and large-scale mosaic targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 mm image circle:\u003c\/strong\u003e covers full-frame sensors with a flat field, as published by Takahashi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNative M48 interface with 55 mm back focus:\u003c\/strong\u003e supports direct camera attachment with minimal adapter stacking, reducing flexure in the imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetracting dew shield:\u003c\/strong\u003e tube length runs 486 mm retracted to 559 mm extended for storage and transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-and-pinion focuser:\u003c\/strong\u003e holds a full imaging train of camera, filter wheel and guider.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FSQ-80FC carries Takahashi's quintuplet Petzval-derived design — five elements including two fluorite lenses — aimed at flattening the field and correcting color across the frame without a separate flattener accessory. At f\/5.6 and 450 mm focal length it trades focal length for field width and speed, the combination astrographs are built around. The aluminum tube and fully multi-coated optics are typical of the FSQ line's imaging-first design; where Takahashi's other refractors are sold as visual-capable OTAs with an optional flattener, the FSQ-80FC's flattening is built into the base optical prescription.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eWide-field deep-sky astrophotography of nebulae, large star clusters and galaxy fields; full-frame mosaic imaging; travel and portable imaging rigs where tube weight and length matter.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a 55 mm back focus from the native M48 interface, which is enough to seat most cooled cameras directly or with a thin adapter stack — filter wheels and off-axis guiders add up quickly against that figure, so it is worth checking your full imaging train before ordering.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003ePublished weight is approximate:\u003c\/strong\u003e Takahashi's own listing states \"approx. 4.1 kg\" rather than an exact figure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMount and tripod are not included:\u003c\/strong\u003e this listing is the optical tube assembly only.\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 — the flattening is built into the optics, so there is no separate corrector to thread on and space out. The M48 interface accepts a camera directly once your adapter stack is sorted.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWide-field deep-sky astrophotography where a fast, short-focal-length refractor covers more sky per frame than a longer telescope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is built and marketed as an imaging astrograph; its native interface and back focus are set for a camera, not an eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat cameras does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny camera that reaches the 55 mm back focus through the M48 interface, including full-frame cooled CMOS and CCD cameras — send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the FSQ-85EDX?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThey are separate optical designs, each on its own specification sheet — figures for one do not describe the other.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a compact 80 mm f\/5.6 quintuplet astrograph with a built-in flattener, a 50 mm image circle, and roughly 4.1 kg of travel-friendly weight, built for wide-field imaging over visual use.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047049384047,"sku":"TAK-TQE08041","price":6263.4,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fsq-80fc_-1-1024x576_jpg.png?v=1786911606"},{"product_id":"takahashi-tsa-120-120mm-f-7-5-triplet-apochromatic-refractor-ota","title":"Takahashi TSA-120 120mm f\/7.5 Triplet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TSA-120 is Takahashi's 120 mm air-spaced ED triplet apochromat, built around a native 900 mm focal length at f\/7.5. The three-element, three-group design uses an ED lens between two conventional elements to control chromatic error across the visual and near-infrared range, and the tube is rated at 6.1 kg. It works as a visual instrument straight out of the box and as an imaging platform once paired with Takahashi's TOA-series correctors, with the drawtube extending from 870 mm to 990 mm for focus travel.\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 mid-aperture apochromat that does both jobs well — sharp, high-contrast planetary and lunar views at f\/7.5, and a capable imaging platform once you add a reducer or flattener. At 6.1 kg it sits comfortably on a mid-size equatorial mount, making it a reasonable step up for an observer moving past a smaller refractor toward more resolving power.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced ED triplet, 3 elements in 3 groups:\u003c\/strong\u003e controls chromatic aberration across the visual and imaging range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e900 mm focal length at f\/7.5:\u003c\/strong\u003e resolves fine planetary and lunar detail and frames smaller deep-sky targets tightly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e227.5 mm back focus at prime focus:\u003c\/strong\u003e published by Takahashi for direct visual or imaging use without a corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.7-inch rack-and-pinion focuser:\u003c\/strong\u003e holds heavier imaging trains without sagging under a full camera and filter wheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e tube length runs from 870 mm retracted to 990 mm extended for storage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125 mm tube diameter, 160 mm at the dew shield:\u003c\/strong\u003e a substantial aperture-to-tube ratio built for stiffness.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TSA-120's triplet objective places an ED element between two conventional glass lenses, air-spaced rather than cemented, which is how Takahashi controls both chromatic aberration and spherical correction across this aperture. At f\/7.5 and 900 mm focal length it is slower than Takahashi's dedicated astrographs, trading imaging speed for the longer native focal length and higher resolving power that favor planetary and lunar work, along with tighter deep-sky framing. The design accepts Takahashi's TOA-35 series correctors: the TOA-35FL field corrector holds the native 900 mm focal length at f\/7.3 with a 40 mm image circle and 117.5 mm back focus, while the TOA-35RD 0.7x reducer drops the system to 635 mm at f\/5.3 with a 44 mm image circle and 62.5 mm back focus for wider-field imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eVisual observation of planets, the Moon, and double stars at f\/7.5; deep-sky and planetary astrophotography once paired with a TOA-series corrector; a mid-aperture apochromat for an observatory or a portable mount setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAt prime focus the back focus runs 227.5 mm, measured to the maximum drawtube extension from the rear of the 50.8 mm adapter. Adding the TOA-35FL corrector changes that to 117.5 mm at f\/7.3, and the TOA-35RD reducer changes it to 62.5 mm at f\/5.3 — each accessory resets both the focal ratio and the spacing your imaging train needs to hit. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists these figures alongside Takahashi's other refractor and corrector combinations, and we're glad to confirm a specific camera and filter setup against them before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMount, tripod, and finder are sold separately:\u003c\/strong\u003e this listing is the optical tube assembly only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImaging performance depends on the matched corrector:\u003c\/strong\u003e the bare optical tube is optimized for visual use and longer-focal-length imaging; a TOA-35FL or TOA-35RD is what unlocks the flatter field and shorter effective focal length most deep-sky imaging trains want.\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 — it is a fixed-mirror-free refractor with nothing to collimate in normal use, and the retractable dew shield and rack-and-pinion focuser are straightforward to operate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-resolution visual observation of planets and the Moon at native f\/7.5, and deep-sky imaging once paired with the TOA-35FL or TOA-35RD.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need extra accessories for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor flat-field imaging, yes — the TOA-35FL corrector or TOA-35RD reducer, matched to the back focus your camera train needs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mounts is it suited to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA mid-size equatorial mount rated comfortably above 6.1 kg once a full imaging or visual accessory load is added.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the TOA-130NS?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe TOA-130NS steps up in aperture to 130 mm with a longer 1000 mm focal length and a dual-speed Micro Edge focuser; the TSA-120 is the lighter, shorter-tube option at 120 mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 120 mm f\/7.5 air-spaced ED triplet apochromat that handles planetary and lunar visual work natively and steps into flat-field imaging with a matched TOA-35 corrector.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047050432623,"sku":"TAK-TTK12010","price":6363.5,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TTK12010_TSA-120_OTA_1.jpg?v=1786911656"},{"product_id":"takahashi-epsilon-180ed-180mm-f-2-8-hyperbolic-flat-field-astrograph-ota","title":"Takahashi Epsilon 180ED 180mm f\/2.8 Hyperbolic Flat-Field Astrograph OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-180ED is Takahashi's largest and fastest Epsilon astrograph, a 180 mm hyperbolic Newtonian design running at a native f\/2.8. A hyperbolic primary mirror, flat secondary, and an integrated field-flattening corrector combine inside the tube to put a flat 44 mm image circle 56.2 mm behind the focuser, with no separate corrector to buy or align. The published tube weight is 10.7 kg, putting it toward the upper end of what a mid-to-large equatorial mount should carry with a full imaging train attached.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if your priority is imaging speed — f\/2.8 gathers light quickly enough to shorten exposure times noticeably against slower optics, which matters most for faint, extended nebulosity. It suits an imager already running a fast reflector or astrograph, since the larger 180 mm mirror and 10.7 kg tube ask for a mount with real payload margin and benefit from a user comfortable checking collimation.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHyperbolic primary + flat secondary + integrated flattener:\u003c\/strong\u003e corrects coma and field curvature inside the tube, with no separate corrector to purchase or space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ef\/2.8 native speed:\u003c\/strong\u003e among the fastest astrograph designs Takahashi builds, cutting exposure times sharply against conventional reflectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44 mm image circle:\u003c\/strong\u003e covers full-frame and APS-C sensors with a flat field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-and-pinion focuser with rotary framing and integrated Camera Angle Adjuster:\u003c\/strong\u003e rotates the imaging train to frame a target without loosening the tube rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessible collimation with reference marks on both mirrors:\u003c\/strong\u003e makes checking and adjusting the optical alignment more direct than on a typical Newtonian.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-180ED combines a 180 mm hyperbolic primary with a flat secondary and a built-in multi-element field flattener — the same modified-hyperbolic-Newtonian family as the smaller Epsilon-160ED, scaled up to a larger primary and a faster f\/2.8. Takahashi's own comparison places this design's chromatic performance below that of a conventional Schmidt camera at the same speed, while keeping the focal plane flat without a curved plate or field corrector as a separate purchase. Back focus is fixed at 56.2 mm from the focuser's rear end. An optional Ɛ-EX 180ED extender changes the configuration to 780 mm at f\/4.3, holding the same 44 mm image circle and 56.2 mm back focus, for imagers who want a longer effective focal length on the same tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFast deep-sky astrophotography of faint nebulae, galaxies and extended objects where exposure time matters; narrowband and broadband imaging with a cooled CMOS or CCD camera; observatory imaging setups built around a large, fast reflector.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 56.2 mm back focus is fixed by the integrated flattener and measured from the rear of the focuser to the focal plane — camera body, filter wheel and any off-axis guider all need to fit within that figure together. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e covers this figure and the Ɛ-EX 180ED extender configuration, and we're glad to check a specific camera and filter setup against it before you order. As a Newtonian-derived design, the mirrors benefit from a collimation check after transport, and the built-in reference marks make that a more direct process than on many reflectors.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot built for eyepiece observing:\u003c\/strong\u003e the fast mirror and fixed-backfocus flattener are matched to a camera sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eA larger mount than the Epsilon-160ED needs:\u003c\/strong\u003e at 10.7 kg published weight, this is a heavier tube than Takahashi's smaller Epsilon models and is worth checking against your mount's imaging payload rating, not just its rated visual capacity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMount and tripod are not included:\u003c\/strong\u003e this listing is the optical tube assembly only.\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\u003eThe flattener is built in, so there is no separate corrector to space out. Collimation is the part that takes practice on any fast Newtonian-derived design, and the reference marks on both mirrors here are built to make that check more direct.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFast deep-sky astrophotography where exposure time and light-gathering speed matter more than reach — faint nebulae, galaxies and wide extended targets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt has no real application in a visual eyepiece train; the flattener and back focus are set for a camera sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat cameras does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny cooled CMOS or CCD astronomy camera reaching the 56.2 mm back focus with its own nosepiece, filter wheel or off-axis guider included in that figure — send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the Epsilon-160ED?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 180ED is larger and faster — 180 mm aperture at f\/2.8 against 160 mm at f\/3.3 — and correspondingly heavier at 10.7 kg against 6.9 kg.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 180 mm f\/2.8 hyperbolic astrograph with the flattener built in, delivering a flat 44 mm image circle at a fixed 56.2 mm back focus for imagers who want the fastest deep-sky speed Takahashi's Epsilon line offers.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047050498159,"sku":"TAK-TEK18010","price":6678.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TEK18010_Epsilon-180ED_OTA_1.jpg?v=1786911699"},{"product_id":"takahashi-toa-130ns-130mm-f-7-7-triplet-refractor-ota-with-mef-2-7-focuser","title":"Takahashi TOA-130NS 130mm f\/7.7 Triplet Refractor OTA with MEF-2.7 Focuser","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-130NS is Takahashi's 130 mm ED apochromatic triplet, built around a highly air-spaced three-element objective for the highest order of color correction Takahashi offers at this aperture. The native focal length is 1000 mm at f\/7.7, and the tube ships with the Micro Edge Focuser MEF-2.7, a dual-speed 2.7-inch rack-and-pinion unit sized for the load of a full imaging or visual accessory train. Published catalog weight is 9.9 kg, and the tube extends from 1013 mm to 1144 mm as the drawtube travels.\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 serious resolving power in a refractor — 130 mm of ED apochromatic aperture at f\/7.7 handles detailed planetary and lunar work and tight deep-sky framing, and the MEF-2.7 focuser is built to carry heavier imaging accessories without flexing. It suits an observer or imager stepping up from a smaller apochromat who has a mount rated well above the 9.9 kg tube weight once accessories are attached.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly air-spaced ED triplet, 3 elements in 3 groups:\u003c\/strong\u003e two S-FPL53 ED elements deliver Takahashi's highest published order of color correction at this aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1000 mm focal length at f\/7.7:\u003c\/strong\u003e strong native resolving power for planetary, lunar and tight deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicro Edge Focuser MEF-2.7 included:\u003c\/strong\u003e a dual-speed 2.7-inch rack-and-pinion focuser built for heavier imaging trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e222.5 mm back focus at prime focus:\u003c\/strong\u003e published by Takahashi for the native configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e tube length runs from 1013 mm to 1144 mm as it extends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnife-edged internal baffles:\u003c\/strong\u003e reduce internal reflections and improve contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-130NS objective is a highly air-spaced triplet using two S-FPL53 ED elements, a configuration Takahashi builds specifically to push color correction beyond what a standard doublet or single-ED triplet achieves. At f\/7.7 and 1000 mm focal length, it favors resolving power and reach over imaging speed, and the hard multicoated optics and knife-edged baffles are aimed at high-contrast planetary and lunar views as much as deep-sky imaging. The design accepts a family of Takahashi correctors: the TOA-35FL field corrector holds close to the native focal length at 980 mm, f\/7.5, with a 40 mm image circle and 117.5 mm back focus; the TOA-645FL flattener runs 990 mm at f\/7.6 with a larger 60 mm image circle and 56.2 mm back focus for medium-format sensors; and the TOA-35RD 0.7x reducer drops the system to 698 mm at f\/5.4 with a 44 mm image circle and 65.5 mm back focus for wider-field imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eHigh-resolution visual observation of planets, the Moon and double stars; tight-framing deep-sky and planetary astrophotography; medium-format imaging once paired with the TOA-645FL flattener; observatory or serious amateur setups on a mount rated well above the 9.9 kg tube weight.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAt prime focus, back focus runs 222.5 mm. Adding the TOA-35FL corrector changes that to 117.5 mm at f\/7.5; the TOA-645FL flattener changes it to 56.2 mm at f\/7.6 with a 60 mm image circle for medium-format cameras; and the TOA-35RD reducer changes it to 65.5 mm at f\/5.4. Each accessory resets both the focal ratio and the spacing your imaging train needs to hit, and the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists all three configurations in full — send us your camera and filter setup and we will confirm the fit with you. Note that the closely related TOA-130NFB carries a different published weight (11.7 kg) and a different back focus (274.5 mm) due to its larger MEF-4 focuser; the two are separate products, not variants of one another.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMount, tripod, and finder are sold separately:\u003c\/strong\u003e this listing is the optical tube assembly with the MEF-2.7 focuser attached.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImaging performance depends on the matched corrector:\u003c\/strong\u003e the bare optical tube favors visual use and longer-focal-length imaging; the TOA-35FL, TOA-645FL, or TOA-35RD is what flattens the field for most deep-sky imaging trains.\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 — it is a fixed-mirror-free refractor with nothing to collimate in normal use. The MEF-2.7 focuser is a standard dual-speed rack-and-pinion unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-resolution planetary and lunar visual observation, tight deep-sky framing, and imaging once paired with a TOA-series corrector.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need extra accessories for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a flat field, yes — the TOA-35FL, TOA-645FL, or TOA-35RD, matched to the back focus your camera train needs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mounts is it suited to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA mount rated comfortably above the 9.9 kg published tube weight once a full imaging or visual accessory load is added.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the TOA-130NFB?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth share the same 130 mm optical design, but the NFB ships with the larger MEF-4 focuser, weighs more at 11.7 kg, and has a longer 274.5 mm back focus — the two are separate products, not interchangeable configurations of one tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 130 mm f\/7.7 ED apochromatic triplet with the dual-speed MEF-2.7 focuser included, built for high-resolution visual work and flat-field imaging once paired with a TOA-series corrector.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047051350127,"sku":"TAK-TOK13010","price":8580.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TOK13010_TOA-130NS_OTA_1.jpg?v=1786911747"},{"product_id":"takahashi-fs-60cp-60mm-f-5-9-fluorite-doublet-apochromatic-refractor-ota","title":"Takahashi FS-60CP 60mm f\/5.9 Fluorite Doublet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60CP is Takahashi's fixed-tube 60 mm fluorite doublet apochromat, built around the same objective as the FS-60CB but housed in a longer, 95 mm-diameter tube with a permanently mounted camera angle adjuster. At 355 mm focal length and f\/5.9 it shares the CB's optical formula and most of its conversion-lens options, but the longer tube gives it 197.8 mm of back focus at prime focus — well over the CB's 162 mm — which is what lets it run Takahashi's newer FU-series reducer without running out of drawtube travel. Attach the 60CP FURD 0.65x reducer and it becomes a 230 mm f\/3.8 astrograph.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you already know you want a wide-field imaging platform and would rather buy the longer-backfocus tube outright than add a spacer later. It suits imagers running the FU reducer for fast, flat fields, and anyone assembling a permanent imaging rig rather than a travel kit that gets reconfigured on site. It is less suited to observers who want the shortest, most collapsible package — the FS-60CB's retractable dew shield is the better fit there.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced fluorite doublet:\u003c\/strong\u003e the same two-element, two-group objective used in the FS-60CB — a genuine fluorite crystal element, not an ED-glass substitute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e355 mm at f\/5.9:\u003c\/strong\u003e 60 mm aperture, native prime-focus figures identical to the CB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e197.8 mm of back focus:\u003c\/strong\u003e a fixed 95 mm tube gives substantially more rear clearance than the CB's 162 mm, built for reducer and flattener use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera angle adjuster:\u003c\/strong\u003e built into the rear cell, for rotating framing without disturbing focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e63 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.8 kg:\u003c\/strong\u003e heavier than the CB by the length of tube, still light for most imaging mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective is the same two-element, air-spaced fluorite doublet used across the FS-60 line — fluorite's anomalous partial dispersion pulls the red, green and blue focal points close enough together that a two-element design performs like a more complex triplet at this aperture, without the violet fringing that limits ordinary short achromats. Hard multicoatings protect the fluorite surface and cut internal reflections.\u003c\/p\u003e\u003cp\u003eWhat distinguishes the CP from the CB is the tube itself, not the glass. The 95 mm barrel is fixed rather than telescoping, and the extra length shifts the back focus out to 197.8 mm at prime focus — room enough for the 60CP FURD 0.65x reducer to reach focus, a part specified for this tube's back focus and not interchangeable with the CB's reducer. Takahashi notes that focus to infinity is not available in the base configuration without the correct diagonal or extension in the visual train, worth checking against the eyepiece setup you plan to use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast wide-field imaging:\u003c\/strong\u003e with the 60CP FURD 0.65x reducer at 230 mm and f\/3.8, for large nebulae and wide star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging at prime focus:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 370 mm and f\/6.2, corrected across a 44 mm circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced-field imaging:\u003c\/strong\u003e with the 60C RD NC 0.85x reducer at 300 mm and f\/5.0.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e lunar, double-star and wide-field work with a diagonal and eyepiece, keeping the infinity-focus note above in mind.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60CB and FS-60CP share the flattener and 0.85x reducer, but the 60CP FURD 0.65x reducer is built specifically for the CP's longer back focus and is a different part from the CB's reducer. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists the figures for both tubes side by side, which is the fastest way to confirm a train before ordering.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 197.8 mm at prime focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e FC\/FS MFL 1.04x — 370 mm, f\/6.2, 44 mm circle, 87.5 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal reducer:\u003c\/strong\u003e 60C RD NC 0.85x — 300 mm, f\/5.0, 44 mm circle, 56.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFU reducer:\u003c\/strong\u003e 60CP FURD 0.65x — 230 mm, f\/3.8, 44 mm circle, 56.0 mm back focus measured from the rear of the adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure which reducer or CA ring your camera needs, send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus to infinity needs the right visual train.\u003c\/strong\u003e Takahashi notes the base configuration does not reach infinity focus without the correct extension tube or diagonal in place — worth checking against the eyepiece or diagonal you plan to use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe CP's FU reducer is model-specific.\u003c\/strong\u003e The 60CP FURD 0.65x is built for this tube's back focus and is a different part from the CB's reducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field needs a corrector.\u003c\/strong\u003e At prime focus the field curves; the flattener or reducer corrects it.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece, or a camera and the appropriate spacer. The one detail worth checking ahead of time is the visual train reaching infinity focus, which depends on the diagonal or extension used; tell us your setup and we will confirm it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FS-60CB and FS-60CP?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame objective and focal length, different tube. The CP's fixed 95 mm barrel gives 197.8 mm of back focus against the CB's 162 mm, and that extra room is what the FU reducer needs to reach focus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWide-field imaging, particularly with the FU reducer at f\/3.8, where the extra back focus over the CB matters most.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt prime focus, yes, for a flat field to the edge — the MFL 1.04x flattener or the 0.85x\/0.65x reducers each correct it differently.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use FS-60CB accessories on this tube?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe flattener and 0.85x reducer are shared. The FU reducer is specific to the CP's back focus and is a separate part from the CB's reducer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 60 mm fluorite apochromat at 355 mm and f\/5.9, built into a fixed 95 mm tube with 197.8 mm of back focus for reducer and flattener work — and a 230 mm f\/3.8 astrograph once the FU reducer is attached.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047051382895,"sku":"TAK-TSK06410","price":1415.7,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tsk06410-1.jpg?v=1786911768"},{"product_id":"takahashi-mewlon-180c-180mm-f-12-dall-kirkham-ota-with-dovetail-plate","title":"Takahashi Mewlon-180C 180mm f\/12 Dall-Kirkham OTA with Dovetail Plate","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Mewlon-180C is Takahashi's 180 mm Dall-Kirkham Cassegrain, sold here as an optical tube assembly with a D-series dovetail plate included. At 2160 mm focal length and f\/12 in a 625 mm tube, it packs long-focus resolving power into a 210 mm-diameter body that weighs 6.2 kg. The concave ellipsoidal primary and spherical secondary form the image with no corrector in the light path, and focusing is done by moving the primary mirror itself rather than by a rack-and-pinion drawtube.\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 compact, long-focal-length instrument for high-resolution planetary, lunar and double-star observing — the Dall-Kirkham design holds coma to a minimum across the visual field, so images stay sharp to the edge at high power. It also suits imagers working on small- and medium-sized targets — planetary nebulae, galaxy cores, the Moon and planets — where 2160 mm or, with the M-FLRD reducer, 1760 mm at f\/9.8 gives the reach a wide-field refractor cannot.\u003c\/p\u003e\u003cp\u003eIf your interest is nebulae and wide Milky Way fields, a fast refractor covers that ground better than this tube's native focal length. Tell us what you are imaging and we can confirm whether the 180C or a shorter instrument fits your target list.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDall-Kirkham Cassegrain optics:\u003c\/strong\u003e a concave ellipsoidal primary paired with a spherical secondary — simpler to figure accurately than a hyperbolic Ritchey-Chrétien secondary, with negligible coma on-axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2160 mm at f\/12:\u003c\/strong\u003e in a 625 mm tube, 210 mm across — a long native focal length in a body short enough to carry to a dark site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary-mirror focusing:\u003c\/strong\u003e the focal point moves by translating the primary, extending the back focal length by about 130 mm rather than relying on drawtube travel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.2 kg:\u003c\/strong\u003e light for a 180 mm Cassegrain, within reach of mid-weight equatorial mounts once a diagonal or camera is added.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD-series dovetail plate included:\u003c\/strong\u003e mounts directly to a compatible saddle without a separate plate purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e67.2 mm of back focus\u003c\/strong\u003e at prime focus, measured from the rear of the 50.8 mm adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eDall-Kirkham optics use a concave ellipsoidal primary and a spherical secondary rather than the hyperbolic primary and secondary of a Ritchey-Chrétien. The spherical secondary is easier to figure to a high standard, and on-axis coma stays low enough that visual observers rarely notice it. Off-axis field curvature is the tradeoff — the design suits the narrow, high-magnification field a planetary or lunar observer actually uses, rather than a wide, flat astrograph field.\u003c\/p\u003e\u003cp\u003eTakahashi focuses the Mewlon by moving the primary mirror rather than by extending a drawtube, which keeps the optical path sealed against dust and airflow disturbance during focusing. The M-FLRD focal reducer\/flattener brings the system to 1760 mm at f\/9.8 with a 30 mm corrected image circle and 56.2 mm of back focus — useful for imaging where the native f\/12 field is narrower than the sensor calls for.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e at 2160 mm and f\/12, high magnification with minimal coma.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting:\u003c\/strong\u003e the long focal length and central obstruction ratio favour close, faint pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOccultation timing:\u003c\/strong\u003e a stable, long-focus platform for precise event capture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall- and medium-target imaging:\u003c\/strong\u003e galaxy cores and planetary nebulae at native focal length, or at 1760 mm and f\/9.8 with the M-FLRD reducer for a 30 mm corrected circle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus at prime is 67.2 mm from the rear of the 50.8 mm adapter — narrower than most apochromatic refractors, so a camera train with a long nosepiece or filter drawer may not reach focus without adjustment. Fitting the M-FLRD reducer changes that figure to 56.2 mm. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects these figures for the whole Takahashi range in one table, and the Downloads tab below carries the Mewlon-180C's own system chart with the exact parts and distances for each configuration.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder:\u003c\/strong\u003e Takahashi specifies a 6x30 finder for this tube; a compatible bracket and finder are separate purchases unless noted otherwise at checkout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDovetail:\u003c\/strong\u003e the included D-series plate fits a Vixen-style or compatible saddle directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer\/flattener:\u003c\/strong\u003e the M-FLRD is sold separately and is the only listed conversion accessory for this tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA with dovetail plate — no mount, diagonal or eyepiece included. At 6.2 kg plus accessories, a mid-weight equatorial mount rated for 8–10 kg of total payload is a reasonable starting point.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure your camera's back focus reaches 67.2 mm, send us your imaging train and we will work out the spacing with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e The dovetail plate is included; mount, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus is tighter than a typical refractor.\u003c\/strong\u003e At 67.2 mm from the 50.8 mm adapter, some camera and diagonal combinations need a shorter adapter stack — the system chart in the Downloads tab lists the parts for each configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNative field is narrow.\u003c\/strong\u003e At f\/12, the corrected field suits planetary and lunar targets rather than wide nebulae; the M-FLRD reducer widens the field to a 30 mm circle at f\/9.8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollimation is occasional maintenance, not a setup step.\u003c\/strong\u003e Like any Cassegrain it can drift with transport, and a collimation eyepiece brings it back into alignment.\u003c\/li\u003e\n\u003c\/ul\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. It arrives collimated from the factory, and because focusing moves the primary mirror rather than a drawtube, there is no separate focuser mechanism to adjust before first light. Occasional collimation touch-ups are normal maintenance for any Cassegrain and are quick with a collimation eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-resolution lunar and planetary observing, double star splitting, and long-focal-length imaging of small targets — galaxy cores, planetary nebulae, occultation events.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a mount?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It ships as an optical tube assembly with the D-series dovetail plate. The plate fits a compatible saddle directly, but the mount itself is a separate purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat cameras and accessories does it need for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny camera reaching the 67.2 mm back focus at prime, or 56.2 mm with the M-FLRD reducer fitted. Send us your camera and filter setup and we will confirm the spacing before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the Mewlon-210?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAperture and resolving power. The 210 has a larger primary and a longer focal length; the 180C is lighter and more portable at a slightly smaller aperture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this not be the choice?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor wide-field nebula or Milky Way imaging, where a fast, short-focal-length refractor covers the frame this tube's narrower field cannot.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 180 mm Dall-Kirkham Cassegrain OTA at 2160 mm and f\/12 — 1760 mm at f\/9.8 with the M-FLRD reducer — weighing 6.2 kg and shipping with a D-series dovetail plate. It is built for long-focal-length resolution on the Moon, planets and double stars, with 67.2 mm of back focus to work into an imaging train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the Mewlon-180C at prime focus, showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Mewlon-180C_spots.png?v=1786911644\" alt=\"Takahashi Mewlon-180C 180mm Dall-Kirkham spot diagram at prime focus\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047051415663,"sku":"TAK-TLK18100","price":3017.3,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TLK18100_Mewlon-180C_1.jpg?v=1786911777"},{"product_id":"takahashi-toa-130nfb-130mm-f-7-7-triplet-refractor-ota-with-mef-4-focuser","title":"Takahashi TOA-130NFB 130mm f\/7.7 Triplet Refractor OTA with MEF-4 Focuser","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-130NFB shares its 130 mm ED apochromatic triplet objective with the TOA-130NS, but ships with Takahashi's larger Micro Edge Focuser MEF-4 — a 4-inch dual-speed rack-and-pinion unit with a built-in camera angle adjuster, sized for medium-format imaging trains. The native focal length is 1000 mm at f\/7.7, published weight is 11.7 kg, and the back focus at prime focus runs 274.5 mm, noticeably longer than the NS variant's 222.5 mm because of the larger focuser body.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you are building a medium-format or heavier imaging train and want the longer back focus and larger focuser throat the MEF-4 provides — the built-in camera angle adjuster is aimed at photographers who need to rotate a bulkier camera body without disturbing the tube rings. At 11.7 kg published weight, it asks for a mount with real payload margin once accessories are attached.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly air-spaced ED triplet, 3 elements in 3 groups:\u003c\/strong\u003e two S-FPL53 ED elements deliver Takahashi's highest published order of color correction at this aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1000 mm focal length at f\/7.7:\u003c\/strong\u003e strong native resolving power for planetary, lunar and tight deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicro Edge Focuser MEF-4 included:\u003c\/strong\u003e a 4-inch dual-speed rack-and-pinion focuser with a built-in camera angle adjuster for medium-format photography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e274.5 mm back focus at prime focus:\u003c\/strong\u003e published by Takahashi, noticeably longer than the TOA-130NS's 222.5 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e tube length runs from 1022 mm to 1153 mm as it extends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnife-edged internal baffles:\u003c\/strong\u003e reduce internal reflections and improve contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-130NFB uses the same highly air-spaced triplet objective as the TOA-130NS — two S-FPL53 ED elements for Takahashi's highest published order of color correction at this aperture — paired with the larger MEF-4 focuser instead of the MEF-2.7. That focuser change is what shifts the back focus from 222.5 mm to 274.5 mm and adds roughly 1.8 kg to the published tube weight. At f\/7.7 and 1000 mm focal length, the optical performance is identical to the NS variant; the difference is entirely in what the focuser and its camera angle adjuster support downstream. The design accepts the same TOA-series correctors as the NS: the TOA-35FL field corrector runs 980 mm at f\/7.5 with a 40 mm image circle, and the 67FL corrector holds the full 1000 mm focal length at f\/7.7 with a substantially larger 92 mm image circle for medium-format sensors.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMedium-format and full-frame deep-sky astrophotography where the larger image circle and camera angle adjuster matter; high-resolution planetary and lunar visual observation; observatory setups on a mount rated well above the 11.7 kg tube weight.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAt prime focus, back focus runs 274.5 mm — longer than most Takahashi refractors, which is worth checking against your existing adapter stack before ordering. Adding the TOA-35FL corrector changes that to a 40 mm image circle at 980 mm and f\/7.5, while the 67FL corrector opens the image circle to 92 mm at the native 1000 mm focal length and f\/7.7 for medium-format cameras. The \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists these figures in full, and we're glad to confirm a specific camera and filter setup against them before you order. Note that the closely related TOA-130NS carries a different published weight (9.9 kg) and a shorter back focus (222.5 mm) due to its smaller MEF-2.7 focuser; the two are separate products, not variants of one another.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMount, tripod, and finder are sold separately:\u003c\/strong\u003e this listing is the optical tube assembly with the MEF-4 focuser attached.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe longer back focus changes your adapter stack:\u003c\/strong\u003e at 274.5 mm, this tube needs more spacing than most Takahashi refractors reach natively — worth confirming against your camera train before ordering.\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 — it is a fixed-mirror-free refractor with nothing to collimate in normal use. The MEF-4 focuser's camera angle adjuster is a built-in mechanical rotator, not a separate accessory to fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMedium-format and full-frame astrophotography, plus high-resolution planetary and lunar visual observation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need extra accessories for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a flat field, yes — the TOA-35FL or 67FL corrector, matched to the image circle and back focus your camera needs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mounts is it suited to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA mount rated comfortably above the 11.7 kg published tube weight once a full imaging accessory load is added.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the TOA-130NS?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth share the same 130 mm optical design, but the NS ships with the smaller MEF-2.7 focuser, weighs less at 9.9 kg, and has a shorter 222.5 mm back focus — the two are separate products, not interchangeable configurations of one tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: the same 130 mm f\/7.7 ED apochromatic triplet as the TOA-130NS, built around the larger MEF-4 focuser for a longer back focus and medium-format imaging support.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047051645039,"sku":"TAK-TOK13210","price":9666.8,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TOK13210_TOA-130NFB_OTA_1.jpg?v=1786911795"},{"product_id":"takahashi-fs-60q-60mm-f-10-fluorite-quadruplet-refractor-ota","title":"Takahashi FS-60Q 60mm f\/10 Fluorite Quadruplet Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60Q is Takahashi's long-focal-length version of the FS-60 platform — the same 60 mm fluorite doublet as the FS-60CB, but with the EX CQ 1.7x extender permanently built into the optical path as a third and fourth element. The result is a 4-element, 3-group apochromat running natively at 600 mm and f\/10, in a 550 mm tube weighing 1.4 kg. Where the CB is bought and reconfigured, the Q is bought already set up for reach.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you know you want the longer focal length rather than a modular tube you configure yourself — lunar and planetary observers who want more image scale from a 60 mm aperture, and imagers targeting smaller, brighter deep-sky objects where 600 mm suits the framing. It suits anyone who wants one dedicated configuration rather than swapping reducers and extenders between sessions.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite quadruplet:\u003c\/strong\u003e four elements in three groups — the FS-60 doublet plus a built-in 1.7x extender group, rather than a separate accessory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600 mm at f\/10:\u003c\/strong\u003e native focal length and ratio, with a 44 mm corrected image circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e158.4 mm of back focus:\u003c\/strong\u003e ample room for a diagonal, filter wheel or imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-and-pinion focuser\u003c\/strong\u003e with 30 mm of drawtube extension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80 mm dew shield\u003c\/strong\u003e over an 80 mm tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.4 kg:\u003c\/strong\u003e light enough for small equatorial and travel mounts even at this focal length.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe front two elements are the same air-spaced fluorite doublet used in the FS-60CB, and Takahashi has permanently mated the CQ 1.7x extender group behind it rather than leaving it as a separate accessory. That turns a 355 mm f\/5.9 doublet into a 600 mm f\/10 quadruplet with a corrected 44 mm image circle — image scale and reach that a 60 mm objective does not otherwise offer, without the secondary-spectrum penalty a plain Barlow would add at this aperture.\u003c\/p\u003e\u003cp\u003eFluorite's anomalous partial dispersion is what makes the front doublet capable of triplet-like colour correction from two elements, and the same hard multicoatings used across the FS-60 range protect the fluorite surface here. The 158.4 mm of back focus is generous for a scope this compact, which is what makes room for a full imaging train — filter wheel, off-axis guider, or a diagonal and eyepiece — without running out of focus travel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary imaging:\u003c\/strong\u003e at 600 mm and f\/10, more image scale than the FS-60CB's native 355 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmaller deep-sky targets:\u003c\/strong\u003e planetary nebulae and galaxy cores that need more focal length than a wide-field refractor provides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power visual observing:\u003c\/strong\u003e lunar detail, double stars and planets with a diagonal and eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuiding and dual-rig imaging:\u003c\/strong\u003e as a longer-focal-length second tube beside a wide-field imaging setup.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FS-60Q's back focus and image circle are published on Takahashi's own system chart, included in the Downloads tab, along with the adapters and distances for a visual or imaging train. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole FS-60 range in one table.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 158.4 mm, measured from the rear of the focuser to the focal plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage circle:\u003c\/strong\u003e 44 mm, corrected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual train:\u003c\/strong\u003e a 1.25-inch or 2-inch diagonal and eyepiece attach through the matching Takahashi visual adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included. At 1.4 kg it suits small equatorial and travel mounts once a camera or diagonal is added.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder and rings:\u003c\/strong\u003e tube rings, a dovetail plate and a finder bracket are separate purchases.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure whether your camera and filter setup will reach focus, send us the details and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe extender is built in, not removable.\u003c\/strong\u003e Unlike the FS-60CB with an accessory extender, the FS-60Q's 1.7x group is a permanent part of the optical path — there is no shorter native configuration on this tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm is 60 mm.\u003c\/strong\u003e Resolution and light gathering follow the aperture; the FS-60Q's advantage is focal length and image scale, not more light.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece and you are observing, or a camera and the published back focus for imaging. Takahashi's system chart in the Downloads tab lists the adapters and distances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLunar and planetary observing and imaging, and smaller deep-sky targets that benefit from 600 mm of focal length over a wide-field refractor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FS-60Q and the FS-60CB?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FS-60Q is built with the CQ 1.7x extender permanently in the optical path — 600 mm at f\/10 instead of the CB's native 355 mm at f\/5.9. The CB reaches the same 600 mm configuration with an accessory extender; the Q is bought already set up for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe quadruplet design already delivers a corrected 44 mm image circle at 600 mm without an additional flattener.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work on a star tracker or small mount?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 1.4 kg the tube itself is light, though 600 mm of focal length asks more of tracking accuracy than a wide-field scope does. Tell us which mount you are using and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 60 mm fluorite quadruplet apochromat running natively at 600 mm and f\/10, with a corrected 44 mm image circle and 158.4 mm of back focus, in a 1.4 kg tube built for lunar, planetary and small-target work.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053054063,"sku":"TAK-TSK06310","price":1515.8,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/afcf724e6cf6ce7113b6e7e865891435.jpg?v=1786911819"},{"product_id":"takahashi-mewlon-210-210mm-f-11-5-dall-kirkham-ota","title":"Takahashi Mewlon-210 210mm f\/11.5 Dall-Kirkham OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Mewlon-210 is Takahashi's 210 mm Dall-Kirkham Cassegrain, sold as an optical tube assembly. At 2415 mm focal length and f\/11.5 in a 700 mm tube, 244 mm across, it steps up from the Mewlon-180C in aperture and reach while keeping the same concave ellipsoidal primary and spherical secondary design. Weight is 8.1 kg, and focusing moves the primary mirror rather than a rack-and-pinion drawtube.\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 more aperture and a longer native focal length than the 180C for high-resolution lunar, planetary and double-star observing, or for imaging small targets — galaxy cores, planetary nebulae — where 2415 mm, or 1961 mm at f\/9.3 with the M-FLRD reducer, resolves detail a shorter refractor cannot. Visual observers get a bigger aperture's light grasp and resolving power in a tube that still travels to a dark site.\u003c\/p\u003e\u003cp\u003eIf wide-field nebula or Milky Way framing is the goal, this tube's narrow native field is the wrong tool — a fast refractor covers that ground instead. Tell us what you are observing or imaging and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDall-Kirkham Cassegrain optics:\u003c\/strong\u003e a concave ellipsoidal primary and spherical secondary, with negligible on-axis coma.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2415 mm at f\/11.5:\u003c\/strong\u003e in a 700 mm tube, 244 mm across — 210 mm of aperture's worth of reach beyond the 180C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary-mirror focusing:\u003c\/strong\u003e the focal point moves by translating the primary, extending the back focal length by about 160 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8.1 kg:\u003c\/strong\u003e heavier than the 180C, and worth checking against your mount's payload once a diagonal or camera is attached.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e67.2 mm of back focus\u003c\/strong\u003e at prime focus, measured from the rear of the 50.8 mm adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM-FLRD reducer compatible:\u003c\/strong\u003e brings the system to 1961 mm at f\/9.3, a 30 mm image circle, at 56.2 mm back focus.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Mewlon-210 shares its optical formula with the 180C at larger scale: a concave ellipsoidal primary paired with a spherical secondary, which is easier to figure precisely than the hyperbolic secondary a Ritchey-Chrétien needs and keeps on-axis coma negligible. The tradeoff is the same — off-axis field curvature that suits the narrow, high-power field of planetary and lunar work rather than a wide astrograph field.\u003c\/p\u003e\u003cp\u003eFocusing moves the primary mirror internally instead of extending a drawtube, sealing the optical path against dust and reducing focus-induced image shift. The M-FLRD focal reducer\/flattener converts the system to 1961 mm at f\/9.3 with a 30 mm corrected circle and 56.2 mm of back focus, shortening the reach for imaging where 2415 mm at f\/11.5 is longer than the target calls for.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e at 2415 mm and f\/11.5, with the resolving power a 210 mm aperture provides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting:\u003c\/strong\u003e long focal length and a well-corrected on-axis image favour close, faint pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-resolution imaging of small targets:\u003c\/strong\u003e galaxy cores and planetary nebulae at native focal length, or 1961 mm at f\/9.3 with the M-FLRD reducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual deep-sky observing:\u003c\/strong\u003e the aperture gathers more light than the 180C for fainter targets at moderate power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus at prime is 67.2 mm from the rear of the 50.8 mm adapter, narrowing to 56.2 mm with the M-FLRD reducer fitted — tighter than most apochromatic refractors, so a long camera or filter-drawer stack may not reach focus without adjustment. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects these figures for the whole Takahashi range, and the Mewlon-210's own system chart in the Downloads tab lists the exact parts and distances per configuration.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer\/flattener:\u003c\/strong\u003e the M-FLRD is sold separately and is the listed conversion accessory for this tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, dovetail, diagonal or eyepiece included. At 8.1 kg before accessories, a mount rated for 12–15 kg of total payload is a reasonable starting point once a diagonal, camera and finder are added.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder and dovetail:\u003c\/strong\u003e a compatible finder bracket and dovetail plate are separate purchases for this tube.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure your camera reaches the 67.2 mm or 56.2 mm back focus figures, send us your imaging train and we will work out the spacing with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, dovetail, diagonal, eyepiece and finder are all sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt 8.1 kg, mount payload is worth checking early.\u003c\/strong\u003e Add the weight of a diagonal, camera and finder before matching it to a mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus is tighter than a typical refractor.\u003c\/strong\u003e 67.2 mm at prime, 56.2 mm with the M-FLRD reducer — the system chart in the Downloads tab lists the parts for each configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNative field is narrow.\u003c\/strong\u003e At f\/11.5 the corrected field suits planetary and lunar targets; the M-FLRD reducer widens it to a 30 mm circle at f\/9.3.\u003c\/li\u003e\n\u003c\/ul\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. It arrives collimated from the factory, and primary-mirror focusing means there is no separate rack-and-pinion focuser to adjust before first light. Occasional collimation touch-ups are normal Cassegrain maintenance and quick with a collimation eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-resolution lunar and planetary observing, double star splitting, and imaging small targets — galaxy cores and planetary nebulae — at long focal length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a mount?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It ships as an optical tube assembly. Mount, dovetail plate, diagonal and eyepiece are separate purchases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 8.1 kg before accessories, a mount rated for roughly 12–15 kg of total payload once a diagonal, camera and finder are attached is a reasonable starting point. Tell us your mount model and we will confirm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the Mewlon-180C?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAperture and focal length. The 210 has a larger primary, more light grasp and a longer native focal length; the 180C is lighter and slightly more portable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this not be the choice?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor wide-field nebula or Milky Way imaging, where a fast, short-focal-length refractor frames the target better than this tube's narrow native field.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 210 mm Dall-Kirkham Cassegrain OTA at 2415 mm and f\/11.5 — 1961 mm at f\/9.3 with the M-FLRD reducer — weighing 8.1 kg, with 67.2 mm of back focus at prime to work into an imaging or visual train. It is built for high-resolution work on the Moon, planets and double stars, and for detail on small deep-sky targets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the Mewlon-210 at prime focus, showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Mewlon-210_spots.png?v=1786911643\" alt=\"Takahashi Mewlon-210 210mm Dall-Kirkham spot diagram at prime focus\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053283439,"sku":"TAK-TLK21000","price":4533.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TLK21000_Mewlon-210_1.jpg?v=1786911831"},{"product_id":"takahashi-toa-150b-150mm-f-7-3-triplet-apochromatic-refractor-ota","title":"Takahashi TOA-150B 150mm f\/7.3 Triplet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-150B is the largest refractor in Takahashi's TOA line, a 150 mm highly air-spaced ED apochromatic triplet built for a native 1100 mm focal length at f\/7.3. Two S-FPL53 ED elements deliver Takahashi's highest published order of color correction, and the published tube weight is 14.5 kg — a figure that puts real demands on the mount underneath it once accessories are attached. The dew shield retracts the tube from 1270 mm down to 1110 mm for storage, and the 4-inch dual-speed rack-and-pinion focuser with camera angle adjuster ships as part of the assembly.\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 the largest aperture Takahashi's TOA refractor line offers and have a mount and pier rated well above the 14.5 kg tube weight — an observatory pier or a large German equatorial mount rather than a portable setup. It suits an observer or imager who has already worked with a smaller apochromat and is stepping up specifically for the resolving power and light grasp a 150 mm aperture provides.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly air-spaced ED triplet, 3 elements in 3 groups:\u003c\/strong\u003e two S-FPL53 ED elements deliver Takahashi's highest published order of color correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1100 mm focal length at f\/7.3:\u003c\/strong\u003e the longest native focal length and largest aperture in the TOA refractor line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-inch dual-speed rack-and-pinion focuser with camera angle adjuster included:\u003c\/strong\u003e built for the load of a full medium-format or heavy imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e275 mm back focus at prime focus:\u003c\/strong\u003e published by Takahashi for the native configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e tube length runs from 1110 mm to 1270 mm as it extends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnife-edged internal baffles:\u003c\/strong\u003e reduce internal reflections and improve contrast at this aperture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOA-150B objective is a highly air-spaced triplet using two S-FPL53 ED elements, the same design family as the TOA-130 series scaled up to a 150 mm aperture and a longer 1100 mm focal length. At f\/7.3, the design favors resolving power and light grasp — the largest of any TOA refractor — over imaging speed, with hard multicoated optics and knife-edged baffles built for high-contrast planetary and lunar work as much as deep-sky imaging. It accepts the same TOA-series correctors as the smaller TOA-130 models: the TOA-35FL field corrector runs 1080 mm at f\/7.2 with a 40 mm image circle and 117.5 mm back focus, the TOA-645FL flattener runs 1085 mm at f\/7.2 with a 60 mm image circle and 56.2 mm back focus for medium-format sensors, and the TOA-35RD 0.7x reducer drops the system to 775 mm at f\/5.2 with a 44 mm image circle and 62.5 mm back focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eHigh-resolution visual observation of planets, the Moon and double stars at the largest aperture Takahashi's refractor line offers; tight-framing deep-sky and planetary astrophotography; medium-format imaging with the TOA-645FL flattener; observatory installations on a pier or mount rated well above the 14.5 kg tube weight.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAt prime focus, back focus runs 275 mm. Adding the TOA-35FL corrector changes that to 117.5 mm at f\/7.2; the TOA-645FL flattener changes it to 56.2 mm at f\/7.2 with a 60 mm image circle for medium-format cameras; and the TOA-35RD reducer changes it to 62.5 mm at f\/5.2. Each accessory resets both the focal ratio and the spacing your imaging train needs to hit, and the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists all three configurations — send us your camera and filter setup and we will confirm the fit with you. Takahashi's own listing notes the tube ships with a CAA (camera angle adjuster), 31.7 mm and 50.8 mm couplings and adapters, and an extension tube included with the optical tube assembly.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMount, tripod, and finder are sold separately from the pier or GEM you'll need:\u003c\/strong\u003e at 14.5 kg published weight, this tube asks for a mount and pier with real payload margin, not a portable travel setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImaging performance depends on the matched corrector:\u003c\/strong\u003e the bare optical tube favors visual use and longer-focal-length imaging; the TOA-35FL, TOA-645FL, or TOA-35RD is what flattens the field for most deep-sky imaging trains.\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 — it is a fixed-mirror-free refractor with nothing to collimate in normal use, though its size and weight mean handling and mounting it takes more care than a smaller apochromat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-resolution planetary and lunar visual observation and tight-framing deep-sky astrophotography, both benefiting from the largest aperture in Takahashi's TOA line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need extra accessories for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a flat field, yes — the TOA-35FL, TOA-645FL, or TOA-35RD, matched to the back focus your camera train needs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mounts is it suited to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA large German equatorial mount or observatory pier rated comfortably above the 14.5 kg published tube weight once a full imaging or visual accessory load is added.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the TOA-130NS and TOA-130NFB?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt steps up to a 150 mm aperture and a longer 1100 mm focal length, against 130 mm and 1000 mm on the NS and NFB, with a correspondingly heavier 14.5 kg tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 150 mm f\/7.3 ED apochromatic triplet, the largest refractor in Takahashi's TOA line, built for high-resolution visual work and flat-field imaging on a mount rated for its 14.5 kg tube weight.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053316207,"sku":"TAK-TOK15110","price":18690.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TOK15110_TOA-150B_1.jpg?v=1786911842"},{"product_id":"takahashi-foa-60-60mm-f-8-8-ortho-apochromatic-refractor-ota","title":"Takahashi FOA-60 60mm f\/8.8 Ortho Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FOA-60 is Takahashi's Ortho Apochromat — a 60 mm fluorite doublet built for correction quality rather than field width, with a published Strehl ratio in excess of 96%, a figure normally associated with Takahashi's larger TOA series. At 530 mm focal length and f\/8.8 it is a slower, more deliberate design than the FS-60 line, in a retractable-dew-shield tube that weighs 1.8 kg.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if what you want from a 60 mm refractor is correction quality — tight, well-controlled stars for lunar and planetary detail and demanding double-star splits — rather than the widest possible field. It suits observers and imagers who already own a wide-field instrument and want a second, high-precision tube for close work, and anyone who wants a compact travel scope that performs like a considerably larger apochromat on the moon and planets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrtho Apochromat design:\u003c\/strong\u003e a two-element air-spaced fluorite doublet optimized for correction over field width — a published Strehl ratio above 96%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e530 mm at f\/8.8:\u003c\/strong\u003e 60 mm aperture in a compact 500 mm tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e175.5 mm of back focus:\u003c\/strong\u003e ample working distance for a diagonal or camera train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e extends to 80 mm over a slim 68 mm tube for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e84 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgrade path:\u003c\/strong\u003e the 1.7x EX extender converts it to the FOA-60Q configuration — 900 mm at f\/15 with a 44 mm image circle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FOA-60 uses the same two-element, air-spaced fluorite doublet family as the rest of the FS\/FC line, but Takahashi has specified and figured it as an Ortho Apochromat — a design tier aimed at the correction levels normally reserved for the TOA triplets. The published Strehl ratio, in excess of 96% at prime focus and over 99% with the 1.7x extender fitted, describes how closely the wavefront approaches a theoretically perfect optic; in practice it shows up as tighter Airy disks and cleaner diffraction rings on planets and double stars than a standard doublet at this aperture delivers.\u003c\/p\u003e\u003cp\u003eHard multicoatings protect the fluorite element, and the 175.5 mm of back focus — generous for a 60 mm scope — is what leaves room for the FL 0.93x flattener or the EX 1.7xR extender to reach focus without running out of drawtube travel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e at 530 mm and f\/8.8, or extended to 900 mm and f\/15 with the EX 1.7xR extender.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-star splitting:\u003c\/strong\u003e the high Strehl ratio is most visible on close, even-magnitude pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact travel observing:\u003c\/strong\u003e a 500 mm tube and 1.8 kg weight that packs down with the retractable dew shield.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging:\u003c\/strong\u003e with the FL 0.93x flattener, 495 mm at f\/8.2 across a 44 mm circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-resolution planetary imaging:\u003c\/strong\u003e with the EX 1.7xR extender, 900 mm at f\/15 across an 88 mm circle — the FOA-60Q configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FOA-60's system chart and extender chart, both in the Downloads tab, list the exact adapters and distances for the flattener and extender configurations. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole Takahashi range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 175.5 mm at prime focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e FL 0.93x — 495 mm, f\/8.2, 44 mm circle, 56.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e EX 1.7xR — converts the tube to the FOA-60Q configuration, 900 mm, f\/15, 88 mm circle, 208.1 mm back focus. The extender has its own system chart, included below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included. At 1.8 kg it suits small to mid-sized equatorial and travel mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you already own the EX 1.7xR extender or are considering it, send us your camera and filter setup and we will confirm the back focus with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field for imaging needs the FL 0.93x flattener.\u003c\/strong\u003e At prime focus the field curves, as on any doublet refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm still sets the light grasp.\u003c\/strong\u003e The Ortho design improves correction, not aperture — its strength is image quality on bright, small targets rather than reach on faint deep-sky objects.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece and you are observing. The flattener and extender configurations are documented on Takahashi's system charts in the Downloads tab, which list the parts and distances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLunar and planetary observing, double-star splitting, and high-resolution imaging once extended to the FOA-60Q configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does Ortho Apochromat mean, and how is this different from the FS-60CB?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a correction-focused design tier — a published Strehl ratio above 96% versus a standard doublet's typical figures — aimed at planetary and double-star performance rather than the FS-60CB's wide-field flexibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this become a FOA-60Q?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — fitting the EX 1.7xR extender converts it to the FOA-60Q's 900 mm f\/15 configuration with an 88 mm image circle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a flat field to the edge of frame, yes — the FL 0.93x flattener corrects the native field curvature.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 60 mm fluorite Ortho Apochromat at 530 mm and f\/8.8, with a Strehl ratio above 96%, 175.5 mm of back focus, and an upgrade path to 900 mm f\/15 with the EX 1.7xR extender.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053545583,"sku":"TAK-TFA06010","price":1816.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFA06010_FOA-60_OTA_1.jpg?v=1786911866"},{"product_id":"takahashi-fc-100df-f-7-4-steinheil-fluorite-doublet-apo-refractor-ota-imaging-model","title":"Takahashi FC-100DF f\/7.4 Steinheil Fluorite Doublet APO Refractor OTA — Imaging Model","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-100DF is Takahashi's 100 mm Steinheil fluorite doublet apochromat in its imaging configuration — the same optical formula as the FC-100DC, built into a shorter 785 mm tube with a 2.7-inch focuser sized for camera loads. At 740 mm focal length and f\/7.4 it weighs 3.3 kg, with 223 mm of back focus at prime giving an imaging train real room to work with.\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 100 mm apochromat built for a camera train from the start — the imaging-length tube and larger focuser distinguish it from the visual-oriented FC-100DC. It suits deep-sky imagers working at moderate focal length, and it reduces to 480 mm at f\/4.8 with the FC-35RD reducer for a wider field, or flattens to 760 mm at f\/7.6 with the FC\/FS MFL 1.04x for full-frame coverage.\u003c\/p\u003e\u003cp\u003eVisual observers get a genuinely apochromatic 100 mm refractor with clean colour correction, though the shorter DC is the lighter choice if imaging is not the goal. Tell us your camera and sensor size and we will confirm which reducer or flattener fits your frame.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteinheil fluorite doublet:\u003c\/strong\u003e two elements in two groups, with hard multicoatings on the fluorite surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e740 mm at f\/7.4:\u003c\/strong\u003e in a 785 mm tube, 95 mm across (124 mm dew shield) — built for the imaging-length back focus this focal ratio needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.7-inch rack-and-pinion focuser:\u003c\/strong\u003e sized for the added weight of a camera, filter wheel and off-axis guider.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e223 mm of back focus\u003c\/strong\u003e at prime focus — generous room for a full imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3 kg:\u003c\/strong\u003e heavier than the FC-100DC's visual configuration, reflecting the longer tube and larger focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e63 mm of drawtube extension\u003c\/strong\u003e for fine focus travel.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective is a two-element air-spaced fluorite doublet in the Steinheil configuration, sharing its optical prescription with the visual-oriented FC-100DC. Fluorite's anomalous partial dispersion pulls the red, green and blue focal points close enough together that secondary spectrum is not the limiting factor at 100 mm, and hard multicoatings protect the softer fluorite surfaces from moisture and handling.\u003c\/p\u003e\u003cp\u003eWhat separates the DF from the DC is mechanical, not optical: a shorter 785 mm tube paired with a 2.7-inch focuser rather than the DC's visual-oriented mount, giving the imaging train more rigidity under camera weight. The FC\/FS MFL 1.04x flattener brings the system to 760 mm at f\/7.6 with a 44 mm corrected circle at 71.2 mm back focus, and the FC-35RD 0.66x reducer shortens it to 480 mm at f\/4.8, also with a 44 mm circle, at 74.1 mm back focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imaging at native focal length:\u003c\/strong\u003e 740 mm and f\/7.4 for medium-sized targets — galaxies, planetary nebulae, tighter framing on emission nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field imaging:\u003c\/strong\u003e with the FC-35RD 0.66x reducer at 480 mm and f\/4.8, a 44 mm corrected circle for larger nebulae and star fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field full-frame imaging:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 760 mm and f\/7.6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e lunar, planetary and double-star work with a diagonal and eyepiece, though the DC is the lighter-weight choice for visual-only use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus at prime is 223 mm, dropping to 71.2 mm with the MFL 1.04x flattener or 74.1 mm with the FC-35RD reducer — each conversion changes the spacing your imaging train needs to hit. Takahashi's own system charts for the base configuration, the FC-35RD reducer, the EX-Q 1.6x extender and the EX-C2X extender are in the Downloads tab, with the parts and distances for each. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range in one table.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlattener:\u003c\/strong\u003e FC\/FS MFL 1.04x, 760 mm at f\/7.6, 44 mm circle, 71.2 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer:\u003c\/strong\u003e FC-35RD 0.66x, 480 mm at f\/4.8, 44 mm circle, 74.1 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtenders:\u003c\/strong\u003e EX-Q 1.6x and EX-C2X extend the focal length further for planetary and lunar imaging — system charts for both are in the Downloads tab.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings, dovetail, diagonal or eyepiece included. At 3.3 kg plus a full imaging train, a mount rated for 8–10 kg of total payload is a reasonable starting point.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure which reducer or flattener matches your sensor, send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, rings, dovetail, diagonal, eyepiece and finder are all sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field needs a corrector.\u003c\/strong\u003e At prime focus the field curves; the MFL 1.04x flattener corrects it across 44 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus changes with every conversion lens.\u003c\/strong\u003e 223 mm at prime, 71.2 mm with the flattener, 74.1 mm with the reducer — the system charts in the Downloads tab list the exact parts for each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite needs ordinary care.\u003c\/strong\u003e The hard multicoatings protect it; standard optical cleaning practice is what it asks for.\u003c\/li\u003e\n\u003c\/ul\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. At prime focus with a diagonal and eyepiece it is straightforward visual use. Imaging trains take more care because the spacing changes with each conversion lens, and the published system charts name the exact parts and distances — send us your camera and we will confirm the train with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDeep-sky imaging at 740 mm native, or wider at 480 mm with the FC-35RD reducer. The larger focuser and imaging-length tube distinguish it from the visual-oriented FC-100DC.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the FC-100DC?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame optical formula, different mechanics. The DF has a shorter 785 mm tube and a 2.7-inch focuser built for camera loads; the DC is the visual-oriented configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a flat field across an APS-C or full-frame sensor, yes — the MFL 1.04x flattener corrects the field curvature that shows at prime focus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 3.3 kg before accessories, most mid-weight imaging mounts handle it once a full imaging train is added. Tell us your setup and we will confirm the total payload.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this not be the choice?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor visual-only use where the extra focuser weight and imaging-length tube add nothing — the FC-100DC covers that use case at a lighter weight.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 100 mm fluorite doublet apochromat built for imaging, at 740 mm and f\/7.4 with 223 mm of back focus, reducing to 480 mm at f\/4.8 or flattening to 760 mm at f\/7.6 depending on the conversion lens fitted. It weighs 3.3 kg and pairs a 2.7-inch focuser with published system charts for every configuration.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the FC-100D optical design at prime focus, showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FC-100DF_spots.png?v=1786911643\" alt=\"Takahashi FC-100D series 100mm fluorite doublet spot diagram at prime focus\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053578351,"sku":"TAK-TFK10110","price":3289.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFK10110_FC-100DF_OTA_1.jpg?v=1786911885"},{"product_id":"takahashi-fc-76dcu-76mm-f-7-5-fluorite-doublet-refractor-ota","title":"Takahashi FC-76DCU 76mm f\/7.5 Fluorite Doublet Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-76DCU is Takahashi's 76 mm fluorite doublet apochromat — a step up in aperture from the FS-60 line, in a tube with a fixed 80 mm barrel and a retractable dew shield that extends to 95 mm. At 570 mm focal length and f\/7.5 it runs 656 mm long and weighs 1.7 kg, and it ships with a working set of visual couplings and adapters rather than a bare tube.\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 more aperture and focal length than a 60 mm refractor offers, in a tube that still packs down for travel with its retractable dew shield. It suits visual observers who want brighter, higher-resolution views of the moon and planets than a 60 mm scope delivers, and imagers who want a mid-aperture apochromat that reduces and flattens cleanly for deep-sky framing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced fluorite doublet:\u003c\/strong\u003e two elements in two groups, the same fluorite-crystal design language as the rest of Takahashi's FC\/FS range, scaled to 76 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e570 mm at f\/7.5:\u003c\/strong\u003e more aperture and reach than the FS-60 line, still a compact travel-length tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e159 mm of back focus:\u003c\/strong\u003e enough room for a diagonal, filter wheel or imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable dew shield:\u003c\/strong\u003e extends to 95 mm over an 80 mm tube, and collapses for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded couplings:\u003c\/strong\u003e ships with a visual adapter, aux ring, eyepiece adapter and camera couplings — a working visual train out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.7 kg:\u003c\/strong\u003e light enough for mid-sized equatorial and travel mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective is a two-element, air-spaced fluorite doublet, the same design family as the FS-60 and FS-60Q but built to a 76 mm aperture. Fluorite's anomalous partial dispersion keeps the red, green and blue focal points close enough together that the two-element design controls colour the way a more complex triplet would at this size, and hard multicoatings on the fluorite surface protect it and cut internal reflections.\u003c\/p\u003e\u003cp\u003eThe 159 mm of back focus is what makes the FC\/FS MFL 1.04x flattener and the 76D RD NC 0.85x reducer usable on this tube — both reach focus within the published spacing, turning the same objective into either a flat 590 mm f\/7.8 imaging setup or a faster 486 mm f\/6.4 wide-field configuration.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e lunar, planetary and double-star work at 570 mm and f\/7.5, with more resolution than a 60 mm aperture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field deep-sky imaging:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 590 mm and f\/7.8, corrected to a 44 mm circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field imaging:\u003c\/strong\u003e with the 76D RD NC 0.85x reducer at 486 mm and f\/6.4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel and eclipse observing:\u003c\/strong\u003e the retractable dew shield keeps the packed length manageable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-76DCU's system chart, plus its Extender-C2X and Extender-Q charts, are in the Downloads tab and list every adapter and distance for each configuration. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 159 mm at prime focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e FC\/FS MFL 1.04x — 590 mm, f\/7.8, 44 mm circle, 75.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal reducer:\u003c\/strong\u003e 76D RD NC 0.85x — 486 mm, f\/6.4, 44 mm circle, 56.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded in the box:\u003c\/strong\u003e Visual Adapter (TKP20005), Coupling L (TKP00104), Aux Ring (TKP20001), Eyepiece Adapter (TKP00101) and Coupling DT (TKP20006B) — a visual train ready to accept a 1.25-inch diagonal and eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included. At 1.7 kg it suits mid-sized equatorial and travel mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are planning an imaging train and want to confirm spacing before ordering, send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings and dovetail are sold separately, though the visual couplings needed for an eyepiece are included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field for imaging needs the flattener or reducer.\u003c\/strong\u003e At prime focus the field curves, as on any doublet refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe FURD 0.64x reducer is built for the longer-tube FC-76DP, not this one.\u003c\/strong\u003e The DCU uses the 76D RD NC 0.85x reducer instead.\u003c\/li\u003e\n\u003c\/ul\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 — it ships with the visual couplings needed for a diagonal and eyepiece, and the system chart in the Downloads tab lists every part and distance for imaging configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eVisual observing of the moon and planets at 76 mm aperture, and deep-sky imaging once the flattener or reducer is fitted.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FC-76DCU and FC-76DP?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 76 mm objective and 570 mm native focal length, different tube. The DCU has a shorter, retractable-dew-shield tube at 159 mm back focus; the DP is a longer fixed tube with 207.1 mm of back focus for its own dedicated FURD reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt prime focus, yes, for a flat field to the edge — the MFL 1.04x flattener or the 0.85x reducer each correct it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box besides the tube?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA visual adapter, aux ring, eyepiece adapter and two couplings — enough to attach a 1.25-inch diagonal and eyepiece without buying additional adapters.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 76 mm fluorite doublet apochromat at 570 mm and f\/7.5, with 159 mm of back focus, a retractable dew shield, and the couplings needed for visual use included — ready to flatten or reduce for imaging when you add the matching corrector.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047053971567,"sku":"TAK-TFK07640","price":1859.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFK07640_FC-76DCU_OTA_1.jpg?v=1786911918"},{"product_id":"takahashi-fc-100dz-100mm-f-8-fluorite-doublet-refractor-ota","title":"Takahashi FC-100DZ 100mm f\/8 Fluorite Doublet Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-100DZ is Takahashi's 100 mm fluorite doublet apochromat, the newest member of the FC-100D family. At 800 mm focal length and f\/8, it retracts to 770 mm and extends to 840 mm through a variable-length dew shield and tube assembly, weighing 3.7 kg. Back focus at prime is 225 mm, and the doublet uses a fluorite element paired with high-index, low-dispersion glass rather than the Steinheil pairing of the DC and DF.\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 the latest revision of Takahashi's 100 mm fluorite doublet line, with reduced blue halo compared to the FC-100D and compatibility with the existing FC-100 accessory range — flatteners, reducers and adapters already built for the DC and DF fit here too. It suits visual observers after clean, high-contrast lunar and planetary views, and imagers who reduce to 530 mm at f\/5.3 with the FC-35RD for wider framing.\u003c\/p\u003e\u003cp\u003eTell us your camera and sensor size and we will confirm which reducer or flattener gets you the field you want.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite doublet, refined design:\u003c\/strong\u003e two elements in two groups, pairing fluorite with high-index, low-dispersion glass for reduced blue halo relative to the FC-100D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e800 mm at f\/8:\u003c\/strong\u003e in a 770–840 mm variable-length tube, 95 mm across (124 mm dew shield).\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2.7-inch rack-and-pinion focuser, single-speed.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e225 mm of back focus\u003c\/strong\u003e at prime focus — ample room for a full imaging or visual train.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e63 mm of drawtube extension.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with existing FC-100 accessories:\u003c\/strong\u003e the same flatteners, reducers and adapters built for the FC-100DC and FC-100DF fit this tube.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective pairs a fluorite element with a high-index, low-dispersion glass element in a two-element air-spaced doublet — a refinement over the Steinheil FC-100DC\/DF pairing that Takahashi states cuts blue halo by roughly half. In practice that means tighter colour correction at the same 100 mm aperture and f\/8 focal ratio, with the retractable dew shield collapsing the 840 mm tube to 770 mm for transport.\u003c\/p\u003e\u003cp\u003eThe FC\/FS MFL 1.04x flattener brings the system to 820 mm at f\/8.2 with a 44 mm corrected circle at 71.2 mm back focus, and the FC-35RD 0.66x reducer shortens it to 530 mm at f\/5.3, also 44 mm, at 68.8 mm back focus — the same conversion lenses used across the FC-100D family.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e at 800 mm and f\/8, with reduced chromatic error over the earlier FC-100D.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky imaging at native focal length:\u003c\/strong\u003e 800 mm for medium-sized targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field imaging:\u003c\/strong\u003e with the FC-35RD 0.66x reducer at 530 mm and f\/5.3, a 44 mm corrected circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 820 mm and f\/8.2.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus at prime is 225 mm, dropping to 71.2 mm with the MFL 1.04x flattener or 68.8 mm with the FC-35RD reducer. Because the FC-100DZ shares its rear cell with the DC and DF, existing FC-100 flatteners, reducers and adapters fit directly. Takahashi's system charts for the base configuration, the FC-35RD reducer and the EX-Q 1.6x extender are in the Downloads tab, and our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlattener:\u003c\/strong\u003e FC\/FS MFL 1.04x, 820 mm at f\/8.2, 44 mm circle, 71.2 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer:\u003c\/strong\u003e FC-35RD 0.66x, 530 mm at f\/5.3, 44 mm circle, 68.8 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e EX-Q 1.6x extends the focal length for planetary and lunar imaging — system chart in the Downloads tab.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings, dovetail, diagonal or eyepiece included. At 3.7 kg plus accessories, a mount rated for 8–10 kg of total payload is a reasonable starting point.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you already own FC-100DC or FC-100DF accessories and are not sure they carry over, send us the part numbers and we will confirm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, rings, dovetail, diagonal, eyepiece and finder are all sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field needs a corrector.\u003c\/strong\u003e At prime focus the field curves; the MFL 1.04x flattener corrects it across 44 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus changes with each conversion lens.\u003c\/strong\u003e 225 mm at prime, 71.2 mm with the flattener, 68.8 mm with the reducer — the system charts in the Downloads tab list the exact parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe tube length varies with the dew shield position.\u003c\/strong\u003e 770 mm retracted, 840 mm extended — worth accounting for in a case or travel bag.\u003c\/li\u003e\n\u003c\/ul\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. At prime focus with a diagonal and eyepiece it is straightforward. Imaging trains take more care because spacing changes with each conversion lens, and the published system charts name the exact parts — send us your camera and we will confirm the train with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLunar and planetary observing with reduced chromatic error, and deep-sky imaging at 800 mm native or wider with the FC-35RD reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the FC-100DC and FC-100DF?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA refined optical prescription — fluorite paired with high-index, low-dispersion glass rather than the Steinheil pairing — with roughly half the blue halo of the FC-100D, while remaining compatible with the same accessory range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo existing FC-100 accessories fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the flatteners, reducers and adapters built for the FC-100DC and FC-100DF fit the FC-100DZ's rear cell directly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 3.7 kg before accessories, most mid-weight mounts handle it once a diagonal or camera is added. Tell us your setup and we will confirm the total payload.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this not be the choice?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor wide-field imaging without a reducer — native f\/8 is a long native ratio for large nebulae, though the FC-35RD reducer addresses that at 530 mm and f\/5.3.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 100 mm fluorite doublet apochromat at 800 mm and f\/8, with 225 mm of back focus at prime and 63 mm of drawtube extension, weighing 3.7 kg. It reduces to 530 mm at f\/5.3 or flattens to 820 mm at f\/8.2 depending on the conversion lens, and it shares its accessory range with the rest of the FC-100D family.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the FC-100DZ at prime focus, showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FC-100DZ_spots.png?v=1786911643\" alt=\"Takahashi FC-100DZ 100mm fluorite doublet spot diagram at prime focus\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047054004335,"sku":"TAK-TFK10310","price":4418.7,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFK10310_FC-100DZ_1.jpg?v=1786911938"},{"product_id":"takahashi-fc-76dp-76mm-f-7-5-fluorite-doublet-refractor-ota","title":"Takahashi FC-76DP 76mm f\/7.5 Fluorite Doublet Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-76DP is the fixed-tube, long-backfocus version of Takahashi's 76 mm fluorite doublet apochromat — the same objective as the FC-76DCU, in a longer 95 mm-diameter tube built for reducer-based astrophotography. At 570 mm focal length and f\/7.5 it shares the DCU's native optics, but its 207.1 mm of back focus at prime focus — close to 50 mm more than the DCU — is what lets it run the dedicated 76DP FURD 0.64x reducer without running out of drawtube travel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you already know you want a permanent 76 mm imaging platform built around the FU reducer, rather than a travel tube you reconfigure between sessions. It suits imagers assembling a fixed rig around the 365 mm f\/4.8 fast configuration the FURD reducer gives, and anyone who does not need the DCU's retractable dew shield for portability.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir-spaced fluorite doublet:\u003c\/strong\u003e the same two-element, two-group 76 mm objective used in the FC-76DCU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e570 mm at f\/7.5:\u003c\/strong\u003e native prime-focus figures identical to the DCU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e207.1 mm of back focus:\u003c\/strong\u003e a fixed 95 mm tube gives substantially more rear clearance than the DCU's 159 mm, built for FU reducer use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e63 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.3 kg:\u003c\/strong\u003e heavier than the DCU by the length of tube, still manageable for mid-sized mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe objective is the same two-element, air-spaced fluorite doublet used in the FC-76DCU — fluorite's anomalous partial dispersion gives this doublet the colour correction of a more complex design at 76 mm aperture, protected by Takahashi's hard multicoatings.\u003c\/p\u003e\u003cp\u003eWhat sets the DP apart is tube length rather than glass. The fixed 95 mm barrel extends the back focus to 207.1 mm at prime focus, which is what makes room for the 76DP FURD 0.64x reducer — a part built for this tube's back focus and not interchangeable with the DCU's 0.85x reducer. With it fitted, the same objective runs at 365 mm and f\/4.8, a materially faster system for deep-sky imaging than the native f\/7.5.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast deep-sky imaging:\u003c\/strong\u003e with the 76DP FURD 0.64x reducer at 365 mm and f\/4.8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat-field imaging at prime focus:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 590 mm and f\/7.8, corrected to a 44 mm circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced-field imaging:\u003c\/strong\u003e with the 76D RD NC 0.85x reducer at 486 mm and f\/6.4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observing:\u003c\/strong\u003e lunar and planetary work at 570 mm and f\/7.5 with a diagonal and eyepiece.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-76DCU and FC-76DP share the same objective and the flattener and 0.85x reducer, but the 76DP FURD 0.64x reducer is built specifically for this tube's 207.1 mm back focus. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e lists the figures for both tubes side by side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 207.1 mm at prime focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e FC\/FS MFL 1.04x — 590 mm, f\/7.8, 44 mm circle, 75.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal reducer:\u003c\/strong\u003e 76D RD NC 0.85x — 486 mm, f\/6.4, 44 mm circle, 56.0 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFU reducer:\u003c\/strong\u003e 76DP FURD 0.64x — 365 mm, f\/4.8, 44 mm circle, 56.0 mm back focus measured from the rear of the adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure which reducer your camera needs, send us your camera and filter setup and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe DP's FU reducer is model-specific.\u003c\/strong\u003e The 76DP FURD 0.64x is built for this tube's back focus and is a different part from the DCU's reducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field needs a corrector.\u003c\/strong\u003e At prime focus the field curves; the flattener or reducer corrects it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo fixed dew shield extension.\u003c\/strong\u003e Unlike the DCU, the DP's dew shield diameter matches the tube diameter rather than retracting further — the tube is longer overall as a result.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece, or a camera and the appropriate spacer for your chosen reducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FC-76DCU and FC-76DP?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 76 mm objective and 570 mm native focal length, different tube. The DP's fixed 95 mm barrel gives 207.1 mm of back focus against the DCU's 159 mm, and that extra room is what the FURD reducer needs to reach focus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFast deep-sky imaging with the FURD 0.64x reducer, where the extra back focus over the DCU matters most.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a flattener for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt prime focus, yes, for a flat field to the edge — the MFL 1.04x flattener or the reducers each correct it differently.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use FC-76DCU accessories on this tube?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe flattener and 0.85x reducer are shared. The FURD reducer is specific to the DP's back focus and is a separate part from the DCU's reducer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 76 mm fluorite apochromat at 570 mm and f\/7.5, built into a fixed 95 mm tube with 207.1 mm of back focus for reducer and flattener work — and a 365 mm f\/4.8 fast astrograph once the FURD reducer is attached.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047054757999,"sku":"TAK-TFA06000","price":2130.7,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-epsilon-130d-f-3-3-hyperbolic-astrograph-ota","title":"Takahashi Epsilon-130D f\/3.3 Hyperbolic Astrograph OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-130D is Takahashi's 130 mm hyperbolic astrograph — a fast, wide-field imaging system rather than a visual telescope. At 430 mm focal length and f\/3.3 in a 460 mm tube, it covers a 44 mm image circle at native focus and weighs 4.9 kg. The digital-generation redesign of Takahashi's original 1980s Epsilon series, it uses a hyperbolic primary and a digital corrector built specifically for modern CMOS and CCD sensors.\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 speed and field over reach — f\/3.3 gathers light fast enough to shorten exposure times on faint, extended targets, and the 44 mm corrected circle covers full-frame sensors at native focus, no separate flattener needed. It suits imagers working large emission nebulae, wide star fields and the kind of targets that need field, not focal length, and its 4.9 kg weight and airline-transportable design make it a workable travel astrograph.\u003c\/p\u003e\u003cp\u003eIt is not built for eyepiece observing — there is no meaningful visual use case at f\/3.3 with a Newtonian-style light path. If wide-field imaging is the goal, tell us your camera and mount and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHyperbolic primary with digital corrector:\u003c\/strong\u003e a redesigned optical train delivering sub-10 µm spots across the field, tuned for modern digital sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e430 mm at f\/3.3:\u003c\/strong\u003e fast enough to shorten integration time on faint, extended targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e44 mm corrected image circle\u003c\/strong\u003e at native focus — full-frame coverage without a separate flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.9 kg:\u003c\/strong\u003e light for a fast 130 mm astrograph, and compact enough to check as airline baggage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e23 mm of drawtube extension\u003c\/strong\u003e and a 56.2 mm back focus at prime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5x extender compatible:\u003c\/strong\u003e the Ɛ-EX 130D converts the system to 650 mm at f\/5.0, still a 44 mm circle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Epsilon-130D uses a hyperbolic primary mirror paired with a multi-element digital corrector positioned ahead of the focal plane — the corrector is what flattens the field and controls coma across a fast f\/3.3 system, delivering sub-10 µm spot sizes at the design wavelengths. This is a purpose-built imaging design: there is no accessible focal plane for a diagonal and eyepiece, and the light path exists to put a flat, corrected image on a sensor.\u003c\/p\u003e\u003cp\u003eThe Ɛ-EX 130D 1.5x extender converts the system to 650 mm at f\/5.0, still with a 44 mm corrected circle and 56.2 mm back focus — useful for tighter framing on smaller targets without leaving the Epsilon-130D's optical train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imaging:\u003c\/strong\u003e at 430 mm and f\/3.3, large emission nebulae and star fields across a 44 mm circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast narrowband imaging:\u003c\/strong\u003e the f\/3.3 speed shortens exposure times where signal is otherwise faint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTighter framing:\u003c\/strong\u003e with the Ɛ-EX 130D 1.5x extender at 650 mm and f\/5.0, for smaller targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel astrophotography:\u003c\/strong\u003e compact and light enough for portable rigs and checked baggage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus at prime is 56.2 mm, unchanged with the Ɛ-EX 130D extender fitted — a tight figure that camera and filter-wheel stacks need to hit precisely to reach focus and keep the field flat. The Epsilon-130D's own system chart, in the Downloads tab, lists the exact parts and distances for both configurations. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects these figures for the whole Takahashi range in one table.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e Ɛ-EX 130D 1.5x, 650 mm at f\/5.0, 44 mm circle, sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings, dovetail or camera included. At 4.9 kg plus a full imaging train, a mount rated for 8–10 kg of total payload is a reasonable starting point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollimation:\u003c\/strong\u003e as a fast hyperbolic system, collimation accuracy matters more than on a slower Newtonian — Takahashi's modified collimation system on this model is built to make that adjustment manageable.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure your camera and filter setup will hit 56.2 mm exactly, send us the details and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for eyepiece observing.\u003c\/strong\u003e This is an imaging-only optical train with no accessible visual focal plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, rings, dovetail and camera are all sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus is tight and fixed.\u003c\/strong\u003e 56.2 mm at both native focus and with the 1.5x extender — the system chart in the Downloads tab lists the parts that hit it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollimation matters more at f\/3.3.\u003c\/strong\u003e A fast hyperbolic system shows collimation error more readily than a slower one; the modified collimation system on this model is built for that adjustment.\u003c\/li\u003e\n\u003c\/ul\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\u003eCollimation needs more attention than on a slower telescope because f\/3.3 shows error more readily, but the modified collimation system is built for that adjustment, and the published system chart names the exact spacing your imaging train needs. Send us your camera and filter setup and we will confirm the train with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWide-field deep-sky imaging — large emission nebulae, star fields, and fast narrowband work where the f\/3.3 speed shortens exposure time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It has no accessible visual focal plane — this is a dedicated imaging astrograph.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — the 44 mm image circle is corrected at native focus, covering full-frame sensors without a separate flattener.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat mount does it need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 4.9 kg before accessories, most imaging mounts in the mid-payload class handle it. Tell us your mount model and full imaging train weight and we will confirm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 1.5x extender change things?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt converts the system to 650 mm at f\/5.0, still with a 44 mm circle — useful for tighter framing on smaller targets without changing telescopes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 130 mm f\/3.3 hyperbolic astrograph at 430 mm focal length with a 44 mm corrected image circle at native focus, weighing 4.9 kg. It is a dedicated imaging telescope built for wide, fast deep-sky work, with a 1.5x extender available for tighter framing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the Epsilon-130D at native focus, showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Epsilon-130D_spots.png?v=1786911643\" alt=\"Takahashi Epsilon-130D 130mm hyperbolic astrograph spot diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047056887919,"sku":"TAK-TEK13010","price":3675.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TEK13010_Epsilon-130D_OTA_1.jpg?v=1786911987"},{"product_id":"takahashi-foa-60q-60mm-f-15-ortho-apochromatic-refractor-ota","title":"Takahashi FOA-60Q 60mm f\/15 Ortho Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FOA-60Q is the FOA-60's Ortho Apochromat objective with the 1.7x EX extender built permanently into the optical path — a 6-element, 4-group design running natively at 900 mm and f\/15, with an 88 mm corrected image circle. Takahashi publishes a theoretical Strehl ratio of 99.8% for this configuration, a figure the company states exceeds its own TOA-130 and TOA-150 triplets. The tube weighs 2.1 kg and extends to 707 mm.\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 the FOA-60's correction quality at long focal length without assembling the extender yourself — planetary and lunar observers chasing fine detail at high power, and double-star observers splitting close, faint pairs where wavefront quality matters as much as aperture. It suits imagers doing high-resolution planetary and lunar work who want a compact, dedicated long-focal-length apochromat rather than a general-purpose wide-field tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrtho Apochromat with built-in extender:\u003c\/strong\u003e six elements in four groups — the FOA-60 doublet plus a permanently mounted 1.7x extender group.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e900 mm at f\/15:\u003c\/strong\u003e native focal length and ratio, with an 88 mm corrected image circle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e99.8% theoretical Strehl ratio,\u003c\/strong\u003e per Takahashi — correction Takahashi states exceeds its TOA-130 and TOA-150 triplets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e208.1 mm of back focus:\u003c\/strong\u003e ample room for a diagonal or imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e84 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.1 kg:\u003c\/strong\u003e compact for the focal length, in a tube that extends to 707 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe front two elements are the FOA-60's Ortho Apochromat fluorite doublet — already specified for correction levels associated with Takahashi's TOA triplets — with a four-element 1.7x extender group permanently mated behind it, rather than sold as a separate accessory. The combination is what produces the published 99.8% theoretical Strehl ratio, and Takahashi's own comparison places that figure above the TOA-130 and TOA-150.\u003c\/p\u003e\u003cp\u003eHard multicoatings protect the fluorite surfaces, and the 208.1 mm of back focus — generous for a 60 mm-aperture tube — is what makes room for a diagonal, filter wheel or high-resolution planetary camera without running short on drawtube travel. Because the extender is integrated rather than an add-on, there is no shorter native configuration on this tube — removing the extender group returns it to a standard FOA-60.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power planetary and lunar observing:\u003c\/strong\u003e at 900 mm and f\/15, where the high Strehl ratio shows up as tighter, cleaner diffraction detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose double-star splitting:\u003c\/strong\u003e correction quality matters as much as aperture for faint, tight pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-resolution planetary imaging:\u003c\/strong\u003e the long native focal length suits lucky-imaging style planetary cameras without an additional Barlow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact long-focal-length visual work:\u003c\/strong\u003e 900 mm in a tube that still travels, at 2.1 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FOA-60Q's system chart and extender-specific chart, both in the Downloads tab, list the adapters and distances Takahashi publishes for this configuration. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole Takahashi range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 208.1 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage circle:\u003c\/strong\u003e 88 mm, corrected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual train:\u003c\/strong\u003e a 1.25-inch or 2-inch diagonal and eyepiece attach through the matching Takahashi visual adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings, finder or dovetail included. At 2.1 kg it suits small to mid-sized equatorial mounts, though 900 mm of focal length asks more of tracking accuracy than a wide-field scope.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are planning a planetary imaging train and want to confirm your camera's back focus, send us the details and we will work it out with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe extender is built in, not removable as a separate accessory purchase.\u003c\/strong\u003e There is no shorter native configuration on this specific tube listing — for that, the FOA-60 without the extender is the base model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 mm still sets the light grasp.\u003c\/strong\u003e The Ortho design and extender improve correction and reach, not aperture — its strength is planetary and double-star detail rather than faint deep-sky targets.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece and you are observing. The system chart in the Downloads tab lists the adapters and distances for imaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-power lunar and planetary observing and imaging, and close double-star splitting, where the 99.8% theoretical Strehl ratio is most visible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the FOA-60 and FOA-60Q?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FOA-60Q has the 1.7x extender permanently built into the optical path — 900 mm at f\/15 instead of the FOA-60's native 530 mm at f\/8.8 — rather than being added as a separate accessory.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need additional accessories for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 88 mm image circle and 208.1 mm of back focus are already corrected for this configuration; a planetary or lunar camera attaches through the standard visual train without an additional flattener.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work on a small mount?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAt 2.1 kg the tube is light, but 900 mm of focal length benefits from steady tracking. Tell us which mount you are using and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 60 mm fluorite Ortho Apochromat running natively at 900 mm and f\/15, with an 88 mm image circle, 208.1 mm of back focus, and a published 99.8% theoretical Strehl ratio built for high-resolution planetary and lunar work.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047056986223,"sku":"TAK-TFA06110","price":2373.8,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFA06110_FOA-60Q_OTA_1.jpg?v=1786912003"},{"product_id":"takahashi-fsq-85edx-babyq-85mm-f-5-3-petzval-astrograph-ota-with-1-01x-flattener","title":"Takahashi FSQ-85EDX BabyQ 85mm f\/5.3 Petzval Astrograph OTA with 1.01x Flattener","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FSQ-85EDX — known as the BabyQ — is Takahashi's 85 mm Petzval quadruplet astrograph, sold here as an optical tube assembly bundled with the 1.01x flattener. At 450 mm focal length and f\/5.3 in a 535–613 mm tube, it weighs 3.6 kg and covers a 44 mm image circle. With the included flattener fitted the system runs 455 mm at f\/5.4 with just 56.2 mm of back focus, which is what makes the flattener worth bundling rather than buying separately.\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 small, genuinely flat-field quadruplet for wide-field deep-sky imaging — four elements in four groups control field curvature and colour across the full 44 mm circle without the compromises a doublet or triplet design makes at this speed. Its 3.6 kg weight and 535 mm collapsed length make it a strong travel astrograph, and the 50 mm drawtube extension gives the focuser room to work with different camera and filter-wheel combinations.\u003c\/p\u003e\u003cp\u003eVisual observers get a genuine apochromat at prime focus with a diagonal and eyepiece, though the FSQ-85EDX is built and priced around imaging. Tell us your camera and filter setup and we will confirm the flattener spacing works for your train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePetzval quadruplet:\u003c\/strong\u003e four elements in four groups, an ED apochromat design built to control field curvature and colour across a flat field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e450 mm at f\/5.3:\u003c\/strong\u003e in a 535–613 mm retractable tube, 95 mm across (114 mm dew shield).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.01x flattener included:\u003c\/strong\u003e 455 mm at f\/5.4, 44 mm corrected circle, 56.2 mm back focus — the configuration this kit is built around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.6 kg:\u003c\/strong\u003e light enough for portable and travel mounts once a full imaging train is attached.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 mm of drawtube extension\u003c\/strong\u003e for focus travel across different camera setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e197.5 mm of back focus at prime\u003c\/strong\u003e — before the flattener is fitted, ample room for accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FSQ-85EDX objective is a four-element, four-group Petzval quadruplet built around ED glass — a design that inherently controls field curvature better than a doublet or triplet at the same speed, because the rear element group does the flattening work a separate corrector would otherwise need to do. The bundled 1.01x flattener refines that further, correcting the field to 44 mm at 455 mm and f\/5.4 with 56.2 mm of back focus — tight enough that camera spacing needs to be accurate, and generous enough that most imaging trains reach it without extension tubes.\u003c\/p\u003e\u003cp\u003eOther conversion options exist for the FSQ-85EDX platform — the RD QB 0.73x reducer brings it to 330 mm at f\/3.9, and the EX ED 1.5x extender to 680 mm at f\/8.0, both with the same 44 mm circle — though this kit is built and priced around the OTA-plus-flattener configuration.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imaging:\u003c\/strong\u003e at 455 mm and f\/5.4 with the included flattener, a 44 mm corrected circle across the frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel astrophotography:\u003c\/strong\u003e a 535 mm collapsed tube and 3.6 kg weight suit portable rigs and checked baggage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster, wider framing:\u003c\/strong\u003e with the RD QB 0.73x reducer (sold separately) at 330 mm and f\/3.9.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTighter framing:\u003c\/strong\u003e with the EX ED 1.5x extender (sold separately) at 680 mm and f\/8.0.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBack focus is 197.5 mm at prime, dropping to 56.2 mm once the included 1.01x flattener is fitted — the figure your imaging train needs to hit. Takahashi's system charts for the base configuration, the RD QE 0.73x reducer and the EX ED 1.5x extender are in the Downloads tab, with the exact parts and distances for each. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range in one table.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlattener:\u003c\/strong\u003e 1.01x, included in this kit — 455 mm at f\/5.4, 44 mm circle, 56.2 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer:\u003c\/strong\u003e RD QB 0.73x (sold separately), 330 mm at f\/3.9, 44 mm circle, 72.2 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e EX ED 1.5x (sold separately), 680 mm at f\/8.0, 44 mm circle, 117.5 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA with flattener — no mount, rings, dovetail, diagonal or eyepiece included. At 3.6 kg plus a full imaging train, most travel and mid-payload mounts handle it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are not sure your camera and filter thickness will reach 56.2 mm exactly, send us your imaging train and we will work out the spacing with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly with the flattener included.\u003c\/strong\u003e Mount, rings, dovetail, diagonal and eyepiece are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus with the flattener is tight.\u003c\/strong\u003e 56.2 mm is generous by imaging-train standards but still worth checking against your camera and filter wheel stack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe reducer and extender are sold separately.\u003c\/strong\u003e This kit bundles only the OTA and the 1.01x flattener; the RD QB 0.73x and EX ED 1.5x are additional purchases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube length varies with the dew shield position.\u003c\/strong\u003e 535 mm retracted, 613 mm extended — worth accounting for in a case.\u003c\/li\u003e\n\u003c\/ul\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. The flattener is included and matched to the tube, so reaching the 56.2 mm back focus is mostly a matter of using the standard adapter stack. The published system chart in the Downloads tab confirms the exact parts, and we can check your specific camera train against it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWide-field deep-sky imaging — nebulae, star fields and Milky Way regions — at 455 mm and f\/5.4 across a flat 44 mm circle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include everything I need to image?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt includes the OTA and the 1.01x flattener. A mount, camera, and any filter wheel or guider are separate purchases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it visually?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, at prime focus with a diagonal and eyepiece, though the telescope and this kit are built and priced around imaging use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and the reducer or extender configurations?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis kit is built around the 1.01x flattener at 455 mm and f\/5.4. The RD QB 0.73x reducer (330 mm, f\/3.9) and EX ED 1.5x extender (680 mm, f\/8.0) are separate accessories for wider or tighter framing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this not be the choice?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIf you need faster than f\/5.4 without buying the reducer separately, or a longer native focal length than 450 mm offers before adding the extender.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: an 85 mm Petzval quadruplet astrograph and its matched 1.01x flattener, together giving 455 mm at f\/5.4 with a 44 mm corrected circle and 56.2 mm of back focus. It weighs 3.6 kg, collapses to 535 mm for travel, and is built for wide-field deep-sky imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Diagram Reports\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi publishes a spot diagram for the FSQ-85EDX with the 1.01x flattener fitted — the configuration this kit ships in — showing star images across the field at the design wavelengths.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FSQ-85EDX_FL101X_spots.png?v=1786911643\" alt=\"Takahashi FSQ-85EDX 85mm Petzval spot diagram with 1.01x flattener\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047058559087,"sku":"TAK-TQE08541","price":4919.2,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TQE08541_FSQ-85EDX_OTA_1.jpg?v=1786912043"},{"product_id":"takahashi-fc-100dc-f-7-4-steinheil-fluorite-doublet-apo-refractor-ota-visual-model","title":"Takahashi FC-100DC f\/7.4 Steinheil Fluorite Doublet APO Refractor OTA, Visual Model","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-100DC is Takahashi's 100 mm Steinheil fluorite doublet apochromat, sold here as the Visual model — the crown element leads in this design rather than following, a configuration Takahashi has used specifically for its 100 mm fluorite refractors. At 740 mm focal length and f\/7.4 it runs 815 mm long with a 30 mm drawtube extension, and weighs 2.7 kg.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if visual observing is the main use — lunar, planetary and double-star work at 100 mm aperture, where the Steinheil doublet's colour correction and light throughput matter more than field width. It suits observers stepping up from a 60 or 76 mm apochromat who want a noticeably brighter, higher-resolution view, and anyone who wants a single well-corrected tube for the moon and planets without the added elements of a larger triplet. Takahashi also sells this objective as the FC-100DF, an imaging-oriented configuration in a different tube; this Visual model is built around eyepiece use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteinheil fluorite doublet:\u003c\/strong\u003e two elements in two groups, with the fluorite crown element leading the light path — a Takahashi design choice specific to its 100 mm doublets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e740 mm at f\/7.4:\u003c\/strong\u003e 100 mm aperture with meaningfully more light grasp and resolution than a 60–76 mm refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e161 mm of back focus:\u003c\/strong\u003e room for a diagonal or a straightforward imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 mm drawtube extension\u003c\/strong\u003e on a rack-and-pinion focuser.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.7 kg:\u003c\/strong\u003e substantial but still manageable on a mid-sized equatorial mount.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMost doublet apochromats use a Fraunhofer layout, with the ED or fluorite element behind the crown glass. Takahashi's 100 mm fluorite doublets instead use a Steinheil configuration, with the fluorite crown element in front. Combined with fluorite's anomalous partial dispersion, the arrangement is what Takahashi credits for the FC-100 series' colour correction and contrast at this aperture — clean planetary and lunar detail without the residual violet fringing that limits achromats at 100 mm.\u003c\/p\u003e\u003cp\u003eHard multicoatings protect the fluorite surfaces, and the 161 mm of back focus is enough for the FC\/FS MFL 1.04x flattener to reach focus at 760 mm and f\/7.6, correcting to a 44 mm image circle if imaging is added to the visual use this model is built around.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e at 740 mm and f\/7.4, where the 100 mm aperture resolves finer detail than a smaller refractor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-star splitting:\u003c\/strong\u003e the Steinheil doublet's colour correction shows clearly on close, bright pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasual deep-sky visual observing:\u003c\/strong\u003e star clusters and brighter nebulae benefit from the extra aperture over a 60–76 mm scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOccasional imaging:\u003c\/strong\u003e with the FC\/FS MFL 1.04x flattener at 760 mm and f\/7.6, for those who want to photograph the moon or planets without switching to the dedicated FC-100DF.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FC-100DC's system chart, plus its Extender-Q and Extender-C2X charts, are in the Downloads tab and list the adapters and distances Takahashi publishes for each configuration. Our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e collects the same figures for the whole range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e 161 mm at prime focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener:\u003c\/strong\u003e FC\/FS MFL 1.04x — 760 mm, f\/7.6, 44 mm circle, 71.2 mm back focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an OTA — no mount, rings or dovetail included. At 2.7 kg it suits mid-sized equatorial mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelated model:\u003c\/strong\u003e the FC-100DF shares this objective in a tube built around imaging rather than visual use, with a different back focus and reducer options.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are weighing this Visual model against the imaging-oriented FC-100DF, send us how you plan to use it and we will help you choose.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, tripod, rings, dovetail, diagonal, eyepiece and finder are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the Visual model.\u003c\/strong\u003e It is built around eyepiece use; the FC-100DF is Takahashi's dedicated imaging configuration of the same objective, in a different tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA flat field for imaging needs the MFL 1.04x flattener.\u003c\/strong\u003e At prime focus the field curves, as on any doublet refractor.\u003c\/li\u003e\n\u003c\/ul\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 — at prime focus it is a diagonal and eyepiece and you are observing. The system chart in the Downloads tab lists parts and distances if you add a flattener for imaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eVisual observing of the moon, planets and double stars at 100 mm aperture. It can image with the MFL 1.04x flattener, but the FC-100DF is Takahashi's dedicated model for that use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and the FC-100DF?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 100 mm Steinheil fluorite doublet objective, different tube and intended use — this Visual model is built for eyepiece observing; the DF is configured for astrophotography with its own back focus and reducer options.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does Steinheil mean, and why does it matter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt describes which element leads the light path — the fluorite crown element sits in front here, rather than behind the flint element as in a Fraunhofer doublet. Takahashi uses this layout specifically on its 100 mm fluorite doublets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWith the FC\/FS MFL 1.04x flattener, yes, at 760 mm and f\/7.6 across a 44 mm corrected circle — though the FC-100DF is the model built specifically for that purpose.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 100 mm Steinheil fluorite doublet apochromat at 740 mm and f\/7.4, with 161 mm of back focus, built as a visual instrument for lunar, planetary and double-star observing.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047058591855,"sku":"TAK-TFK10010","price":2902.9,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TFK10010_FC-100DC_1.jpg?v=1786912049"},{"product_id":"takahashi-fct-114ds-114mm-f-7-triplet-apochromatic-refractor-ota","title":"Takahashi FCT-114DS 114mm f\/7 Triplet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FCT-114DS is Takahashi's 114 mm (4.5-inch) fluorite triplet apochromat, at 800 mm focal length and f\/7. It combines a fluorite element with a triplet lens arrangement, published with a visual Strehl ratio of 97.5%, and its tube extends from 795 mm to 884 mm. Optical tube weight is 11.2 lb.\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 114 mm apochromatic triplet for high-contrast lunar and planetary viewing, or double-star splitting, where the 97.5% Strehl ratio and near-elimination of chromatic error matter more than field width. It also suits astrophotographers willing to add a flattener or reducer — Takahashi's FC\/FS-family correctors are the starting point.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite triplet apochromat:\u003c\/strong\u003e a fluorite element paired with a triplet lens arrangement for a published 97.5% visual Strehl ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e800 mm at f\/7:\u003c\/strong\u003e in a 795–884 mm tube — 114 mm of aperture in a moderate-length instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e11.2 lb optical tube weight,\u003c\/strong\u003e as Takahashi publishes it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-contrast optics:\u003c\/strong\u003e Takahashi states the design virtually eliminates chromatic aberration, aimed at lunar, planetary and stellar observation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FCT-114DS pairs a fluorite element with a triplet lens design — three elements working together to control both spherical and chromatic aberration more tightly than a doublet at the same aperture and speed, which is what a 97.5% Strehl ratio at f\/7 requires. Takahashi markets it for lunar observation, high-magnification planetary viewing and stellar work, where the design's tight correction shows most directly at the eyepiece.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing:\u003c\/strong\u003e high-magnification visual work benefiting from the design's tight chromatic correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting:\u003c\/strong\u003e a well-corrected 114 mm aperture resolves close, faint pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstrophotography with an add-on corrector:\u003c\/strong\u003e Takahashi notes that optional flatteners or focal reducers extend the tube to imaging use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, rings, dovetail, diagonal and eyepiece are all sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrector is matched to this tube by name.\u003c\/strong\u003e Tell us how you plan to image with it and we will work out which flattener or reducer suits your sensor.\u003c\/li\u003e\n\u003c\/ul\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 more than any refractor OTA — at prime focus with a diagonal and eyepiece it is straightforward.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLunar and planetary observing and double star splitting, where the published 97.5% Strehl ratio and tight chromatic correction do the most visible work.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the FCT-114DF?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth share the same published aperture, focal length and f-ratio.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eVisually and at prime focus, yes. For a flat, corrected field you would need a matched flattener.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 114 mm fluorite triplet apochromat at 800 mm and f\/7, with a published 97.5% Strehl ratio, built for high-resolution lunar, planetary and double-star viewing at 11.2 lb.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047058952303,"sku":"TAK-TCK11410","price":4676.1,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/screenshot_2026-07-27_at_2.04.42_pm.png?v=1786912104"},{"product_id":"takahashi-fct-114df-114mm-f-7-triplet-apochromatic-refractor-ota","title":"Takahashi FCT-114DF 114mm f\/7 Triplet Apochromatic Refractor OTA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FCT-114DF is Takahashi's 114 mm fluorite triplet apochromat, working at 800 mm and f\/7. Takahashi publishes a 97.5% visual Strehl ratio for it — a figure that describes how close the focused image comes to theoretical perfection, and one very few refractors are specified against at all. It uses the same focuser assembly as the FSQ-85EDX, and the tube runs to approximately 5 kg.\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 114 mm apochromatic triplet for lunar, planetary and deep-sky observing, with the option of adding a flattener or reducer for imaging later. If you already own an FSQ-85EDX, the shared focuser means the accessories you have for one will carry across to the other.\u003c\/p\u003e\u003cp\u003eAt 114 mm it sits in useful territory — enough aperture to hold high magnification on a planet, still short enough at 800 mm to frame larger deep-sky objects without a reducer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorite triplet apochromat:\u003c\/strong\u003e a fluorite element in a three-element objective, which is what buys the colour correction a doublet cannot reach at this aperture and speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e800 mm at f\/7:\u003c\/strong\u003e 114 mm of aperture at a moderate focal ratio — neither a fast astrograph nor a long planetary tube, but comfortable at both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e97.5% visual Strehl ratio:\u003c\/strong\u003e Takahashi's published figure for the optical quality of the finished instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser shared with the FSQ-85EDX:\u003c\/strong\u003e the same assembly, so adapters and accessories transfer between the two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximately 5 kg:\u003c\/strong\u003e a manageable load for a mid-sized equatorial mount once a diagonal and eyepiece are attached.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA fluorite element in a triplet objective controls two problems at once. Chromatic error — the colour fringing that betrays a lesser refractor on a bright limb — comes down because fluorite's dispersion behaviour is something optical glass cannot imitate. Spherical aberration comes down because a third element gives the designer another surface to work with. Doing both at 114 mm and f\/7 is what the 97.5% Strehl figure is measuring.\u003c\/p\u003e\u003cp\u003eStrehl ratio is worth understanding when you see it quoted. It compares the light concentrated in the centre of a star image against what a theoretically perfect optic would deliver. Anything above 95% is generally regarded as excellent; 97.5% is a figure most manufacturers do not publish because most instruments cannot support the claim.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observing\u003c\/strong\u003e at high magnification, where colour correction and contrast show most directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-sky visual observing\u003c\/strong\u003e — 114 mm gathers meaningfully more light than a 100 mm tube while staying transportable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star work\u003c\/strong\u003e, where clean star images matter more than field width.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAstrophotography with a corrector\u003c\/strong\u003e, once the right flattener or reducer is matched to your camera.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e the same assembly as the FSQ-85EDX, so 2-inch visual adapters and camera fittings for that telescope fit this one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrectors:\u003c\/strong\u003e Takahashi offers flatteners and reducers for its refractor range, and the right one depends on your sensor. Send us your camera and we will match it for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e sold as an optical tube assembly. Rings, dovetail, diagonal and eyepiece are separate.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is an optical tube assembly.\u003c\/strong\u003e Mount, rings, dovetail, diagonal and eyepiece are all sold separately. We can quote a complete setup if that is easier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo corrector is matched to this tube by name.\u003c\/strong\u003e Tell us how you plan to image with it and we will work out which flattener or reducer suits your sensor.\u003c\/li\u003e\n\u003c\/ul\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\u003eAt prime focus, no — a diagonal and an eyepiece and you are observing. For imaging, send us your camera and we will work out the corrector and spacing with you.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLunar, planetary and double-star observing, where the 97.5% Strehl ratio and the fluorite triplet's colour correction show most clearly. It handles deep-sky visual work comfortably too.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does a 97.5% Strehl ratio actually mean?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt measures how much of a star's light lands where a perfect optic would put it. Above 95% is excellent. It is a demanding figure to publish, and most manufacturers do not quote one at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the FCT-114DS?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThey share aperture, focal length and focal ratio. The DF is the one Takahashi specifies as using the FSQ-85EDX focuser. If you are choosing between them, tell us how you plan to use the telescope and we will talk it through.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, with a corrector matched to your sensor. Send us your camera and we will work out the spacing with you before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill my FSQ-85EDX accessories fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe focuser is the same assembly, so accessories that thread or slide into that focuser will transfer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 114 mm fluorite triplet apochromat at 800 mm and f\/7, published at 97.5% Strehl and sharing its focuser with the FSQ-85EDX at around 5 kg — built for lunar, planetary and double-star observers who want colour correction and contrast at a useful aperture, with room to add imaging later.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047061278831,"sku":"TAK-TCK11420","price":5262.4,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-starbase-ke-20mm-kellner-eyepiece","title":"Takahashi Starbase KE-20mm Kellner Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase KE-20mm is a 20mm Kellner eyepiece from Takahashi's Starbase accessory line, built around a straightforward 2-groups, 3-element optical design. It delivers a 45° apparent field of view and 14mm of eye relief, and weighs 77g. It threads into any standard 1.25” focuser, diagonal, or binoviewer using the same barrel convention as the rest of the Takahashi eyepiece range.\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 low-power, wide-field eyepiece for a Takahashi refractor or reflector — for scanning star fields, framing open clusters, or getting a bright, comfortable finder-style view before switching to higher power. It also works as a second eyepiece alongside a shorter-focal-length Starbase or TPL for a two-eyepiece kit covering low and high power.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKellner optical design:\u003c\/strong\u003e 2 groups, 3 elements — a simple, well-corrected layout for the center and mid-field of the view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e a generous window at 20mm focal length, wider than the eyepieces bundled with most starter refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14mm eye relief:\u003c\/strong\u003e comfortable for observing without eyeglasses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e77g weight:\u003c\/strong\u003e light enough not to unbalance a small refractor's focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Kellner design pairs a plano-convex field lens with a cemented achromatic eye lens, a configuration that keeps cost down while holding up well at the center of the field — exactly where a low-power, wide-view eyepiece spends most of its time. At 20mm focal length and f-ratios typical of Takahashi apochromats, the KE-20mm stays undemanding on the eye and forgiving of minor eye placement, which is what the 14mm eye relief figure is doing for you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi FS-60CB (355mm, f\/5.9) the KE-20mm gives roughly 18x — a true wide-field, grab-and-go view of large open clusters and Milky Way star fields. On a TSA-120 (900mm, f\/7.5) the same eyepiece yields about 45x, a comfortable low-power view for scanning before you move to a shorter focal length for detail. Divide any Takahashi tube's focal length by 20mm to get the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMost of the Starbase and Takahashi eyepiece lines use the 1.25” (31.7mm) barrel standard, which fits every Takahashi focuser, star diagonal, and 2″-to-1.25” adapter in the current catalog.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal with the rest of the range:\u003c\/strong\u003e expect to refocus when you swap eyepieces.\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 — it drops into any 1.25” focuser or diagonal and is ready to use immediately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLow-power, wide-field visual observing — star fields, open clusters, and framing before you switch to a shorter eyepiece for detail.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for astrophotography?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt's built for visual use. For imaging, a dedicated camera train and adapter suited to your telescope's back focus is the better route — see our \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e if you're setting one up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 20mm Kellner eyepiece with a 45° field and 14mm of eye relief — a wide, comfortable, low-power view for any Takahashi tube with a 1.25” focuser. If you're building out a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047072649327,"sku":"TAK-SBP08070","price":64.35,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08070_3.jpg?v=1786912635"},{"product_id":"takahashi-starbase-or-18mm-orthoscopic-eyepiece","title":"Takahashi Starbase OR-18mm Orthoscopic Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase OR-18mm is an 18mm orthoscopic eyepiece from Takahashi's Starbase accessory line, built on a 4-elements-in-2-groups design that keeps distortion low, particularly toward the center of the field. It has a 45° apparent field of view, 13mm of eye relief, and a 1.25” (31.7mm) barrel that fits standard Takahashi focusers and diagonals. Optical coatings are fully multi-coated throughout.\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 sharp, low-distortion eyepiece at a moderate focal length — for lunar terrain, double stars, and planetary detail on nights when a mid-power view suits the seeing better than the highest-power eyepiece in your case.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrthoscopic 4-element, 2-group design:\u003c\/strong\u003e favors low distortion and center sharpness over the widest possible field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e a moderate window that keeps the target centered without much drifting during unguided visual sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13mm eye relief:\u003c\/strong\u003e workable for observers who wear glasses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics:\u003c\/strong\u003e reduces internal reflections and improves contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25” (31.7mm) barrel:\u003c\/strong\u003e the Takahashi standard, fits existing focusers and diagonals without an adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOrthoscopic eyepieces trade field width for correction at the center of the view — the four-element, two-group layout used here is chosen specifically to hold that correction with low distortion, which is why orthoscopics remain a common choice for high-contrast planetary and lunar observing even though wider-field designs have become more common elsewhere in the eyepiece market. At 18mm, the OR-18mm sits toward the low-power end of the Starbase orthoscopic range.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi FS-60CB (355mm, f\/5.9) the OR-18mm gives about 20x, a comfortable low-power view for star fields and lunar overviews. On a TSA-120 (900mm, f\/7.5) the same eyepiece yields roughly 50x — a solid all-purpose magnification for the Moon, brighter planets, and double stars. Divide any Takahashi tube's focal length by 18mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 1.25” (31.7mm) barrel fits any Takahashi focuser, star diagonal, or 2″-to-1.25” adapter already in the current lineup, so it slots into an existing eyepiece case without any extra hardware.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal:\u003c\/strong\u003e Takahashi lists this eyepiece as non-parfocal, so a small refocus is needed when you switch to it from another eyepiece.\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 — it threads directly into a 1.25” focuser or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eModerate-power visual observing — lunar detail, double stars, and planets, with the low-distortion correction orthoscopic designs are known for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it differ from the Starbase KE eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe KE (Kellner) eyepieces use a simpler 3-element design and lean toward wider, lower-power views; the OR (orthoscopic) eyepieces use a 4-element design tuned for sharper, more distortion-free images at the center of the field.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAn 18mm orthoscopic eyepiece with a 45° field, 13mm eye relief, and the standard 1.25” barrel — a sharp, moderate-power choice for lunar and planetary detail. If you're putting together a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047073304687,"sku":"TAK-SBP08050","price":70.07,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08050_3.jpg?v=1786912668"},{"product_id":"takahashi-starbase-or-20mm-orthoscopic-eyepiece","title":"Takahashi Starbase OR-20mm Orthoscopic Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase OR-20mm is a 20mm orthoscopic eyepiece from Takahashi's Starbase accessory line, built on the same 4-elements-in-2-groups design as the rest of the OR series, aimed at low distortion toward the center of the field. It has a 45° apparent field of view, 14mm of eye relief, and weighs 82g. Takahashi lists an overall body size of 33mm x 45mm (diameter x length) for this specific model.\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 low-power orthoscopic view — wider star fields, lunar overviews, and framing shots before switching to a shorter focal length for detail, with the sharper center-field correction orthoscopic designs are built for.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrthoscopic 4-element, 2-group design:\u003c\/strong\u003e low distortion, particularly at the center of the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e a comfortably wide window at this focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e14mm eye relief:\u003c\/strong\u003e comfortable for eyeglass wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e82g weight:\u003c\/strong\u003e light enough to leave a small refractor's balance unaffected.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe four-element, two-group orthoscopic layout is chosen for correction rather than field width — it holds sharpness and low distortion from the center out, which is the trait orthoscopic eyepieces have historically been valued for on the Moon and planets. At 20mm, the OR-20mm sits at the low-power end of the Starbase orthoscopic range, useful as a wide-view complement to the shorter focal lengths in the same series.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi FS-60CB (355mm, f\/5.9) the OR-20mm gives about 18x, a wide, bright view for star fields and open clusters. On a TSA-120 (900mm, f\/7.5) the same eyepiece yields roughly 45x — a comfortable low-power view of the Moon and larger deep-sky targets. Divide any Takahashi tube's focal length by 20mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal with the rest of the range:\u003c\/strong\u003e expect to refocus when you swap eyepieces.\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 — it drops into a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLow-power visual observing — wide star fields and lunar overviews, with the low-distortion correction of an orthoscopic design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it differ from the OR-18mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth use the same 4-element orthoscopic layout; the OR-20mm's slightly longer focal length gives a touch lower magnification and a marginally larger exit pupil on the same telescope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 20mm orthoscopic eyepiece with a 45° field, 14mm eye relief, and an 82g weight — a wide, low-power view built around the same distortion-controlled optics as the rest of the Starbase OR series. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047073566831,"sku":"TAK-SBP08060","price":70.07,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08060_3.jpg?v=1786912698"},{"product_id":"takahashi-6x30-finder-scope-bracket","title":"Takahashi 6x30 Finder Scope Bracket","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis bracket mounts a Takahashi 6x30 finderscope to the rear cell of a 78mm-and-larger Takahashi refractor. The pre-drilled baseplate matches the Takahashi rear-cell bolt pattern, and the Takahashi green finish matches the optical tube.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a 78mm or larger Takahashi refractor and need to mount or replace the 6x30 finder bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-drilled baseplate:\u003c\/strong\u003e matches the Takahashi rear-cell bolt pattern for direct attachment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree chromed ball-head bolts:\u003c\/strong\u003e set the finder's centering against the baseplate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNylon-tipped collimating bolts with locking nuts:\u003c\/strong\u003e hold the finder's alignment once set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTakahashi green finish:\u003c\/strong\u003e matches the factory tube colour.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMounting a 6x30 finderscope for star-hopping and initial target acquisition on 78mm-and-larger refractors, or replacing a lost or damaged factory bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits Takahashi refractor optical tubes of 78mm aperture and larger through the pre-drilled rear-cell pattern. It pairs with the \u003ca href=\"\/products\/takahashi-6x30-finderscope-without-bracket\"\u003eTakahashi 6x30 Finderscope\u003c\/a\u003e, sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBracket only:\u003c\/strong\u003e the 6x30 finderscope is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFit is rear-cell specific:\u003c\/strong\u003e the baseplate is drilled to the Takahashi 78mm-and-larger rear-cell pattern rather than a universal dovetail.\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 — it bolts directly to the pre-drilled rear cell, and the three ball-head bolts plus the locking collimation bolts handle centering and alignment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe bracket only. The 6x30 finderscope is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich finder does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Takahashi 6x30 finderscope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes is it compatible with?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e78mm-and-larger Takahashi refractor optical tubes with the standard rear-cell bolt pattern.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA finder bracket for 78mm-and-larger Takahashi refractors, with a pre-drilled rear-cell baseplate and three-point centering and collimation for the 6x30 finderscope.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047074975855,"sku":"TAK-TKA00562","price":77.22,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00562.jpg?v=1786912719"},{"product_id":"takahashi-starbase-ke-25mm-kellner-eyepiece","title":"Takahashi Starbase KE-25mm Kellner Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase KE-25mm is a 25mm Kellner eyepiece from Takahashi's Starbase accessory line, built around the same 2-groups, 3-element optical layout as the KE-20mm. It delivers a 45° apparent field of view and 18mm of eye relief, and weighs 77g — the longest focal length, and so the lowest power and widest exit pupil, in the Starbase Kellner pairing.\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 the lowest-power, widest-view eyepiece in your case — for locating targets, scanning the Milky Way, or getting a bright, easy view before moving to a shorter focal length for detail.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKellner optical design:\u003c\/strong\u003e 2 groups, 3 elements, simple and well-corrected at the center of the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e a wide window at 25mm focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18mm eye relief:\u003c\/strong\u003e generous, comfortable for eyeglass wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e77g weight:\u003c\/strong\u003e matches the KE-20mm, so the pair balances the same way in a focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Kellner layout — a plano-convex field lens paired with a cemented achromatic eye lens — keeps the design simple while holding correction at the center of the field, which is where a low-power, wide-view eyepiece like this one is used most. At 25mm, this is the longer of the two Starbase Kellner focal lengths, producing the largest exit pupil and lowest magnification in the pairing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi FS-60CB (355mm, f\/5.9) the KE-25mm gives about 14x, a very wide, bright view suited to large star fields and the Milky Way. On a TSA-120 (900mm, f\/7.5) the same eyepiece yields roughly 36x — useful as a locating eyepiece before switching to higher power. Divide any Takahashi tube's focal length by 25mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMost of the Starbase and Takahashi eyepiece lines use the 1.25” (31.7mm) barrel standard, which fits every current Takahashi focuser, star diagonal, and 2″-to-1.25” adapter.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal with the rest of the range:\u003c\/strong\u003e expect to refocus when you swap eyepieces.\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 — it drops into any 1.25” focuser or diagonal and is ready to use immediately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLow-power, wide-field visual observing — locating targets, scanning star fields, and framing before you switch to a shorter focal length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the KE-20mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame Kellner design and weight; the KE-25mm's longer focal length gives a lower magnification and larger exit pupil on the same telescope, useful as the wide end of a two-eyepiece kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 25mm Kellner eyepiece with a 45° field and 18mm of eye relief — the widest, lowest-power option in the Starbase Kellner pairing. If you're building out a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075008623,"sku":"TAK-SBP08080","price":72.93,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08080_3.jpg?v=1786912734"},{"product_id":"takahashi-starbase-80-6x30-finder-with-bracket","title":"Takahashi Starbase 80 6x30 Finder with Bracket","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a complete 6x30 finder unit built for the Starbase 80 — a 30mm objective at fixed 6x magnification, supplied together with its mounting bracket. It locates objects outside the main tube's narrow field so you can center them before switching to the eyepiece.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Starbase 80 and need the matched finder-and-bracket set for target acquisition.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm objective, fixed 6x magnification:\u003c\/strong\u003e wide enough field to star-hop before centering a target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBracket included:\u003c\/strong\u003e the finder and its mount ship together, matched to each other.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSized for the Starbase 80:\u003c\/strong\u003e mounts directly without an adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eStar-hopping to deep-sky targets, centering objects before moving to the main eyepiece, and rough alignment before imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eBuilt for the Starbase 80; the bracket is matched and included in the set. If you are pairing this finder with a different telescope, send us the model and we will confirm the fit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFinder and bracket ship together:\u003c\/strong\u003e there is no separate bracket to source or match.\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 — the bracket is included and matched to the Starbase 80, so there is no separate finder-to-bracket fitting to work out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification and aperture does it have?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e6x30 — a 30mm objective at fixed 6x magnification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe finder body and its mounting bracket together.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLocating objects outside the main tube's field before centering them at the eyepiece or in the imaging train.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA matched 6x30 finder-and-bracket set for the Starbase 80, with a 30mm objective and fixed 6x magnification, ready to mount.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075369071,"sku":"TAK-SBP08110","price":132.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08110_3.jpg?v=1786912743"},{"product_id":"takahashi-tpl-18-plossl-eyepiece","title":"Takahashi TPL-18 Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-18 is an 18 mm Plossl eyepiece from Takahashi's TPL series, the line that replaced the company's earlier Abbe and LE eyepieces. It gives a 48° apparent field with 13 mm of eye relief, from four elements in two groups — the classic Plossl configuration, built here in high-refraction, low-dispersion glass that Takahashi states cuts center-field chromatic aberration to roughly half the level of the Abbe series.\u003c\/p\u003e\u003cp\u003eAt 18 mm it sits toward the lower-power end of the TPL range: enough magnification to resolve lunar detail and closer double stars, with a true field wide enough that a target does not need constant re-centering on an undriven mount.\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 general-purpose eyepiece for the Moon, planets, double stars and brighter deep-sky objects at moderate power, without paying for a wide-field design built for a use you may not need. The 48° field is the traditional Plossl width — narrower than a modern wide-field eyepiece, and correspondingly simpler and less expensive to produce well.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 mm focal length:\u003c\/strong\u003e moderate power on most Takahashi refractors and reflectors — see Compatibility for real figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field:\u003c\/strong\u003e the traditional Plossl field width, sharp across the center with a mild softening toward the edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13 mm eye relief:\u003c\/strong\u003e a comfortable eye position for direct viewing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 elements in 2 groups:\u003c\/strong\u003e the symmetric Plossl configuration, unchanged in principle for decades because it works.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-refraction, low-dispersion glass:\u003c\/strong\u003e tightens center-field chromatic correction relative to Takahashi's earlier Abbe and LE eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-coated optics:\u003c\/strong\u003e 99% visible-light transmission with a matte barrel finish to control stray light.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Plossl design pairs two achromatic doublets symmetrically around the field stop — four elements in two groups. It is one of the oldest eyepiece formulas still in wide production, because the layout does the basic job well: a sharp, high-contrast image at a reasonable eye relief and manufacturing cost. Takahashi's TPL series updates the formula with higher-refraction, lower-dispersion glass than its own earlier Abbe and LE lines, which measurably tightens chromatic correction at the center of the field.\u003c\/p\u003e\u003cp\u003eTakahashi's own literature describes the TPL series as sharp from the center out to roughly the halfway point of the 48° field, with mild star distortion toward the corners — a known characteristic of the Plossl form rather than a manufacturing shortfall. Takahashi also states that pairing the TPL series with the 2x Ortho Barlow clearly improves flatfieldness, with the combination approaching full-field correction.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing\u003c\/strong\u003e — crater walls, rilles and terminator relief at moderate power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting\u003c\/strong\u003e where a moderate, well-corrected field is enough.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrighter deep-sky objects\u003c\/strong\u003e — open clusters, globular clusters and planetary nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral-purpose visual observing\u003c\/strong\u003e across a range of telescope apertures and focal lengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaired with the 2x Ortho Barlow\u003c\/strong\u003e for a flatter field at roughly double the power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 18. An FS-60CB at 355 mm gives about 20x; an FC-100DZ at 800 mm gives about 44x; a Mewlon 210 at 2415 mm gives about 134x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 31.7 mm — a standard 1.25-inch fit for Takahashi and most third-party diagonals and focusers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e in a refractor you will normally use it behind a star diagonal. The Takahashi 1.25-inch prism diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Ortho Barlow:\u003c\/strong\u003e Takahashi publishes that flatfieldness across the TPL series clearly improves when used through the 2x Ortho Barlow, at roughly double this eyepiece's magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e for adapter and spacing questions across your imaging or visual train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° is a traditional field, not an ultra-wide one.\u003c\/strong\u003e An 82° or 100° eyepiece gives a more immersive view; the TPL trades that width for a simpler design that still delivers a sharp center field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification depends on your telescope.\u003c\/strong\u003e The same 18 mm gives about 20x on a short 60 mm refractor and 134x on a Mewlon 210 — send us your telescope model and we will confirm where it lands in your eyepiece set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a visual eyepiece.\u003c\/strong\u003e Camera trains connect directly to the telescope or its corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e110 g is light\u003c\/strong\u003e — it will not register in most focuser-balance calculations.\u003c\/li\u003e\n\u003c\/ul\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 — it drops into a 1.25-inch diagonal or focuser and you focus. Nothing to assemble or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 18. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to Takahashi's older Abbe and LE eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe TPL series uses higher-refraction, lower-dispersion glass, cutting center-field chromatic aberration to roughly half the Abbe level and about two-thirds of the LE level.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt works well on brighter clusters and planetary nebulae at moderate power. For a wider true field at lower power from the same series, the TPL-50 is the long-focal-length option.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e13 mm of eye relief is workable for some glasses wearers, depending on your frames.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with a Barlow?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the 2x Ortho Barlow doubles the magnification and, per Takahashi, improves the TPL series' flatfieldness at the same time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eExpect to refocus when switching between eyepiece families.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: an 18 mm Plossl eyepiece with a 48° field and 13 mm of eye relief, built from four elements in two groups with glass chosen to keep the center field free of chromatic aberration. It suits general lunar, double-star and moderate-power deep-sky viewing, and flattens out further when paired with Takahashi's 2x Ortho Barlow.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075434607,"sku":"TAK-TKA00622","price":290.29,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00622.jpg?v=1786912747"},{"product_id":"takahashi-starbase-or-14mm-orthoscopic-eyepiece","title":"Takahashi Starbase OR-14mm Orthoscopic Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase OR-14mm is a 14mm orthoscopic eyepiece from Takahashi's Starbase accessory line, built on the series' 4-elements-in-2-groups design for low distortion toward the center of the field. It has a 45° apparent field of view, 12mm of eye relief, weighs 70g, and Takahashi lists an overall body size of 33mm x 38mm (diameter x length) for this model.\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 mid-to-high power eyepiece for planetary detail, lunar craters, and splitting closer double stars, with the sharp, low-distortion correction orthoscopic designs are known for.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrthoscopic 4-element, 2-group design:\u003c\/strong\u003e low distortion, particularly at the center of the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e steady framing at moderate-to-high power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12mm eye relief:\u003c\/strong\u003e workable for eyeglass wearers at this focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70g weight:\u003c\/strong\u003e light enough not to unbalance a small refractor's focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe four-element, two-group orthoscopic layout holds sharpness and low distortion from the center outward, the trait that has kept orthoscopic designs in regular use for lunar and planetary observing even as wide-field alternatives have become more common. At 14mm, the OR-14mm sits in the middle of the Starbase orthoscopic range — short enough for real planetary detail, long enough to stay easy on the eye.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi FS-60CB (355mm, f\/5.9) the OR-14mm gives about 25x, useful for lunar overviews and brighter deep-sky targets. On a TSA-120 (900mm, f\/7.5) the same eyepiece yields roughly 64x — enough for real planetary and lunar detail on a night of average seeing. Divide any Takahashi tube's focal length by 14mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi's product page for the OR-14mm gives a 33mm x 38mm overall body size rather than a separate barrel-diameter figure. The rest of the Starbase orthoscopic line uses the 1.25” (31.7mm) barrel standard that fits every current Takahashi focuser and diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal with the rest of the range:\u003c\/strong\u003e expect to refocus when you swap eyepieces.\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 — it threads directly into a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMid-to-high power visual observing — planetary detail, lunar craters, and closer double stars.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the OR-9mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 4-element orthoscopic design; the OR-14mm's longer focal length gives lower magnification and a larger, more forgiving exit pupil on the same telescope.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 14mm orthoscopic eyepiece with a 45° field, 12mm eye relief, and a 70g weight — a sharp mid-power choice for planetary and lunar detail. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075467375,"sku":"TAK-SBP08040","price":77.22,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08040_3.jpg?v=1786912762"},{"product_id":"takahashi-7x50-finder-scope-bracket","title":"Takahashi 7x50 Finder Scope Bracket","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis bracket mounts a Takahashi 7x50 or 7.5x50 finderscope to a refractor's rear cell. The flat mounting base carries the rear-cell attachment holes, and three chromed ball-head bolts plus nylon-tipped collimation bolts with locking nuts handle centering and alignment.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Takahashi refractor sized for the 7x50 or 7.5x50 finder and need to mount or replace the bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat mounting base:\u003c\/strong\u003e drilled for the rear-cell bolt pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree chromed ball-head bolts:\u003c\/strong\u003e set the finder's centering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNylon-tipped collimation bolts with locking nuts:\u003c\/strong\u003e hold alignment once set.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLimited 5-year manufacturer warranty.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMounting a 7x50 or 7.5x50 finderscope for star-hopping and target acquisition, or replacing a lost or damaged factory bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits Takahashi refractor optical tubes sized for the 7x50 and 7.5x50 finder. It pairs with the \u003ca href=\"\/products\/takahashi-7-5x50-finderscope-without-bracket\"\u003eTakahashi 7.5x50 Finderscope\u003c\/a\u003e and the 7x50 finderscope, both sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBracket only:\u003c\/strong\u003e the finderscope is sold separately.\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 — it bolts directly to the rear cell, and the three ball-head bolts plus the locking collimation bolts handle centering and alignment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe bracket only. The finderscope is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich finders does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Takahashi 7x50 and 7.5x50 finderscopes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA finder bracket for Takahashi refractors carrying a 7x50 or 7.5x50 finderscope, with a flat rear-cell base and three-point centering and collimation.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075500143,"sku":"TAK-TKA00563","price":140.14,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ofin-tk-tka00563.jpg?v=1786912766"},{"product_id":"takahashi-7x50-finder-bracket-blue-black","title":"Takahashi 7x50 Finder Bracket (Blue Black)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis bracket mounts a Takahashi 7x50 finderscope to a refractor's rear cell, in the blue-black finish used on Takahashi's darker-trim tubes rather than the standard Takahashi green.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Takahashi refractor in the blue-black trim and need to mount or replace the 7x50 finder bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat mounting base:\u003c\/strong\u003e drilled for the rear-cell bolt pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue-black finish:\u003c\/strong\u003e matches Takahashi's darker-trim optical tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect fit for the 7x50 finderscope:\u003c\/strong\u003e attaches without an adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMounting a 7x50 finderscope on a blue-black finish Takahashi refractor, or replacing a lost or damaged factory bracket.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAttaches the Takahashi 7x50 finderscope, sold separately, to the rear cell of a Takahashi refractor.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBracket only:\u003c\/strong\u003e the 7x50 finderscope is sold separately.\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 — it bolts directly to the rear cell and holds the finder in place once fastened.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe bracket only. The finderscope is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is this different from the standard finish bracket?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFinish only — blue-black rather than Takahashi green, matched to darker-trim tubes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA blue-black finish bracket for mounting a Takahashi 7x50 finderscope to a refractor rear cell.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075532911,"sku":"TAK-TKA00563BB","price":140.14,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/august-16-0005-7x50-finder-w-bracket-tvf7500-ajpg_480x_200decad-0d2b-4375-b12a-7ca24bb19bf8.jpg?v=1786912779"},{"product_id":"takahashi-tpl-25-plossl-eyepiece","title":"Takahashi TPL-25 Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-25 is a 25 mm Plossl eyepiece from Takahashi's TPL series, the line that replaced the company's earlier Abbe and LE eyepieces. It gives a 48° apparent field with 18 mm of eye relief, from four elements in two groups — the classic Plossl configuration, built in high-refraction, low-dispersion glass that Takahashi states cuts center-field chromatic aberration to roughly half the level of the Abbe series.\u003c\/p\u003e\u003cp\u003eAt 25 mm it sits toward the lower-power, wider-true-field end of the TPL range — a comfortable eyepiece for framing a broader area of sky rather than pushing magnification.\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 general-purpose, lower-power eyepiece for open clusters, star fields and wider lunar views, with a comfortable 18 mm of eye relief. The 48° field is the traditional Plossl width — narrower than a modern wide-field design, and correspondingly simpler and less expensive to produce well.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 mm focal length:\u003c\/strong\u003e lower power and a wider true field on most Takahashi telescopes — see Compatibility for real figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field:\u003c\/strong\u003e the traditional Plossl field width, sharp across the center with mild softening toward the edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 mm eye relief:\u003c\/strong\u003e comfortable eye position, including for many glasses wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 elements in 2 groups:\u003c\/strong\u003e the symmetric Plossl configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-refraction, low-dispersion glass:\u003c\/strong\u003e tightens center-field chromatic correction relative to Takahashi's earlier Abbe and LE eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-coated optics:\u003c\/strong\u003e 99% visible-light transmission with a matte barrel finish to control stray light.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Plossl design pairs two achromatic doublets symmetrically around the field stop — four elements in two groups, one of the longest-serving eyepiece formulas in production because it delivers a sharp, high-contrast image at reasonable cost. Takahashi's TPL series builds it in higher-refraction, lower-dispersion glass than the company's earlier Abbe and LE lines, which measurably tightens chromatic correction at the center of the field.\u003c\/p\u003e\u003cp\u003eTakahashi describes the TPL series as sharp from the center out to roughly the halfway point of the 48° field, with mild star distortion toward the corners — typical of the Plossl form at this field width. Takahashi states that pairing the series with the 2x Ortho Barlow clearly improves flatfieldness, with the combination approaching full-field correction.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen clusters and star fields\u003c\/strong\u003e at low-to-moderate power with a wide true field for the focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing\u003c\/strong\u003e where a fuller view of the disc is wanted rather than crater-level detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star sweeping\u003c\/strong\u003e and general low-power visual observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA comfortable eyepiece for extended sessions,\u003c\/strong\u003e given the 18 mm eye relief.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaired with the 2x Ortho Barlow\u003c\/strong\u003e for a flatter field at roughly double the power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 25. An FS-60CB at 355 mm gives about 14x; an FC-100DZ at 800 mm gives about 32x; a Mewlon 210 at 2415 mm gives about 97x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 31.7 mm — a standard 1.25-inch fit for Takahashi and most third-party diagonals and focusers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e in a refractor you will normally use it behind a star diagonal. The Takahashi 1.25-inch prism diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Ortho Barlow:\u003c\/strong\u003e Takahashi publishes that flatfieldness across the TPL series clearly improves when used through the 2x Ortho Barlow, at roughly double this eyepiece's magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e for adapter and spacing questions across your imaging or visual train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° is a traditional field, not an ultra-wide one.\u003c\/strong\u003e An 82° or 100° eyepiece gives a more immersive view; the TPL trades that width for a simpler design that still delivers a sharp center field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification depends on your telescope.\u003c\/strong\u003e The same 25 mm gives about 14x on a short 60 mm refractor and 97x on a Mewlon 210 — send us your telescope model and we will confirm where it lands in your eyepiece set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a visual eyepiece.\u003c\/strong\u003e Camera trains connect directly to the telescope or its corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e140 g is light\u003c\/strong\u003e — it will not register in most focuser-balance calculations.\u003c\/li\u003e\n\u003c\/ul\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 — it drops into a 1.25-inch diagonal or focuser and you focus. Nothing to assemble or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 25. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to Takahashi's older Abbe and LE eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe TPL series uses higher-refraction, lower-dispersion glass, cutting center-field chromatic aberration to roughly half the Abbe level and about two-thirds of the LE level.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — at 25 mm it gives one of the wider true fields in the TPL range, well suited to open clusters and star fields rather than high-power planetary detail.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e18 mm of eye relief is comfortable for most glasses wearers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with a Barlow?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the 2x Ortho Barlow doubles the magnification and, per Takahashi, improves the TPL series' flatfieldness at the same time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYou'll need to refocus when switching between eyepiece families.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 25 mm Plossl eyepiece with a 48° field and 18 mm of eye relief, built from four elements in two groups with glass chosen to keep the center field free of chromatic aberration. It suits low-power cluster and star-field viewing, and flattens out further when paired with Takahashi's 2x Ortho Barlow.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075565679,"sku":"TAK-TKA00623","price":317.46,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00623.jpg?v=1786912784"},{"product_id":"takahashi-starbase-or-9mm-orthoscopic-eyepiece","title":"Takahashi Starbase OR-9mm Orthoscopic Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase OR-9mm is a 9mm orthoscopic eyepiece from Takahashi's Starbase accessory line, built on the series' 4-elements-in-2-groups design for low center-field distortion. It has a 45° apparent field of view, 7mm of eye relief, weighs 52g, and Takahashi lists an overall body size of 33mm x 35mm (diameter x length) for this model — one of the shorter, higher-power focal lengths in the Starbase orthoscopic range.\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 high-power eyepiece for planetary detail, lunar close-ups, or splitting tighter double stars, on nights when the seeing supports it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrthoscopic 4-element, 2-group design:\u003c\/strong\u003e low distortion at the center of the field, where high-power planetary detail lives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45° apparent field of view:\u003c\/strong\u003e steady framing even at high power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7mm eye relief:\u003c\/strong\u003e workable without glasses; tighter for eyeglass wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e52g weight:\u003c\/strong\u003e negligible load on the focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eAt short focal lengths, the correction an orthoscopic design holds at the center of the field matters more, not less — that's exactly where high-power planetary and lunar detail is formed. The 9mm OR keeps the same four-element, two-group layout as the rest of the Starbase orthoscopic series, scaled down for the shorter focal length and correspondingly higher magnification.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi TSA-120 (900mm, f\/7.5) the OR-9mm gives about 100x, a solid all-around planetary magnification. On a Takahashi FS-60CB (355mm, f\/5.9) the same eyepiece yields roughly 39x, useful for brighter deep-sky objects at moderate power on a smaller travel scope. Divide any Takahashi tube's focal length by 9mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal with the rest of the range:\u003c\/strong\u003e expect to refocus when you swap eyepieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e7mm eye relief is tighter than the longer Starbase focal lengths:\u003c\/strong\u003e workable bare-eyed; eyeglass wearers may find it easier to observe without glasses and adjust focus for their own correction instead.\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 — it threads directly into a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-power visual observing — planetary detail, lunar close-ups, and tighter double stars.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the OR-6mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 4-element orthoscopic design and barrel convention; the OR-9mm's slightly longer focal length gives a somewhat lower magnification and more forgiving eye relief.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 9mm orthoscopic eyepiece with a 45° field, 7mm eye relief, and a 52g weight — a high-power option for planetary and lunar detail. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075598447,"sku":"TAK-SBP08030","price":80.08,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08030_3.jpg?v=1786912792"},{"product_id":"takahashi-fqr-1-finder-quick-release-silver","title":"Takahashi FQR-1 Finder Quick Release (Silver)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe FQR-1 is a quick-release base that sits between a Takahashi finder bracket and the focuser, so the finder lifts on and off without breaking its collimation each time.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you regularly remove your finder for transport or storage and want to skip re-collimating it every time it goes back on.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-piece quick-release base:\u003c\/strong\u003e separates the finder bracket from the focuser mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps alignment intact:\u003c\/strong\u003e the finder returns to the same position across removal and reinstallation.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSilver finish.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eRemoving the finder for transport, storage, or swapping between finder types without repeating the collimation process each time.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits between a Takahashi finder bracket and the focuser mount on compatible refractors. It is not compatible with the FOA-60 or FOA-60Q, where it interferes with an adjacent part.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot for the FOA-60 or FOA-60Q:\u003c\/strong\u003e the quick release interferes with an adjacent part on these two models.\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 — it installs once between the focuser and the finder bracket, and after that the finder simply lifts on and off without re-collimating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich telescopes is it not compatible with?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FOA-60 and FOA-60Q, where it interferes with an adjacent part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does it attach to?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA Takahashi finder bracket on one side and the focuser mount on the other.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA quick-release base that lets a Takahashi finder bracket come off and go back on without losing its alignment, fitting Takahashi refractors other than the FOA-60 and FOA-60Q.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075631215,"sku":"TAK-TKA00571W","price":171.6,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-tpl-33-plossl-eyepiece","title":"Takahashi TPL-33 Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-33 is a 33 mm Plossl eyepiece from Takahashi's TPL series, the line that replaced the company's earlier Abbe and LE eyepieces. It gives a 48° apparent field with 23 mm of eye relief, from four elements in two groups — the classic Plossl configuration, built in high-refraction, low-dispersion glass that Takahashi states cuts center-field chromatic aberration to roughly half the level of the Abbe series.\u003c\/p\u003e\u003cp\u003eAt 33 mm it is one of the lower-power members of the TPL range — a wide-true-field eyepiece for scanning star fields rather than resolving fine detail.\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 low-power eyepiece for sweeping star fields, large open clusters and the Milky Way, with generous 23 mm eye relief for relaxed viewing. The 48° field is the traditional Plossl width — narrower than a modern wide-field design, and correspondingly simpler and less expensive to produce well.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e33 mm focal length:\u003c\/strong\u003e low power and a wide true field on most Takahashi telescopes — see Compatibility for real figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field:\u003c\/strong\u003e the traditional Plossl field width, sharp across the center with mild softening toward the edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e23 mm eye relief:\u003c\/strong\u003e generous eye position, comfortable over glasses for most frames.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 elements in 2 groups:\u003c\/strong\u003e the symmetric Plossl configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-refraction, low-dispersion glass:\u003c\/strong\u003e tightens center-field chromatic correction relative to Takahashi's earlier Abbe and LE eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-coated optics:\u003c\/strong\u003e 99% visible-light transmission with a matte barrel finish to control stray light.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Plossl design pairs two achromatic doublets symmetrically around the field stop — four elements in two groups, a formula that has stayed in production for decades because it produces a sharp, high-contrast image at reasonable cost. Takahashi's TPL series builds it in higher-refraction, lower-dispersion glass than the company's earlier Abbe and LE lines, which measurably tightens chromatic correction at the center of the field.\u003c\/p\u003e\u003cp\u003eTakahashi describes the TPL series as sharp from the center out to roughly the halfway point of the 48° field, with mild star distortion toward the corners — typical of the Plossl form at this field width. Takahashi states that pairing the series with the 2x Ortho Barlow clearly improves flatfieldness, with the combination approaching full-field correction.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide star fields and the Milky Way\u003c\/strong\u003e at low power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge open clusters\u003c\/strong\u003e that overflow the field of a higher-power eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelaxed viewing sessions\u003c\/strong\u003e where 23 mm of eye relief matters, including for glasses wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA low-power finder-style eyepiece\u003c\/strong\u003e for locating targets before switching to higher power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaired with the 2x Ortho Barlow\u003c\/strong\u003e for a flatter field at roughly double the power.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 33. An FS-60CB at 355 mm gives about 11x; an FC-100DZ at 800 mm gives about 24x; a Mewlon 210 at 2415 mm gives about 73x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 31.7 mm — a standard 1.25-inch fit for Takahashi and most third-party diagonals and focusers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e in a refractor you will normally use it behind a star diagonal. The Takahashi 1.25-inch prism diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Ortho Barlow:\u003c\/strong\u003e Takahashi publishes that flatfieldness across the TPL series clearly improves when used through the 2x Ortho Barlow, at roughly double this eyepiece's magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e for adapter and spacing questions across your imaging or visual train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° is a traditional field, not an ultra-wide one.\u003c\/strong\u003e An 82° or 100° eyepiece gives a more immersive view; the TPL trades that width for a simpler design that still delivers a sharp center field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification depends on your telescope.\u003c\/strong\u003e The same 33 mm gives about 11x on a short 60 mm refractor and 73x on a Mewlon 210 — send us your telescope model and we will confirm where it lands in your eyepiece set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a visual eyepiece.\u003c\/strong\u003e Camera trains connect directly to the telescope or its corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e160 g is light\u003c\/strong\u003e — it will not register in most focuser-balance calculations.\u003c\/li\u003e\n\u003c\/ul\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 — it drops into a 1.25-inch diagonal or focuser and you focus. Nothing to assemble or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 33. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to Takahashi's older Abbe and LE eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe TPL series uses higher-refraction, lower-dispersion glass, cutting center-field chromatic aberration to roughly half the Abbe level and about two-thirds of the LE level.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — at 33 mm it gives one of the widest true fields in the TPL range, suited to large clusters and star fields rather than high-power planetary detail.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e23 mm of eye relief is comfortable for most glasses wearers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with a Barlow?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the 2x Ortho Barlow doubles the magnification and, per Takahashi, improves the TPL series' flatfieldness at the same time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSwitching between eyepiece families will call for a refocus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 33 mm Plossl eyepiece with a 48° field and 23 mm of eye relief, built from four elements in two groups with glass chosen to keep the center field free of chromatic aberration. It suits low-power, wide-field viewing, and flattens out further when paired with Takahashi's 2x Ortho Barlow.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075926127,"sku":"TAK-TKA00624","price":461.89,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00624.jpg?v=1786912820"},{"product_id":"takahashi-starbase-or-6mm-orthoscopic-eyepiece","title":"Takahashi Starbase OR-6mm Orthoscopic Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Starbase OR-6mm is a 6mm orthoscopic eyepiece from Takahashi's Starbase accessory line, and the shortest, highest-power focal length in the series. It uses the same 4-elements-in-2-groups design as the rest of the OR range, with a 43° apparent field of view, 4mm of eye relief, and a 1.25” (31.7mm) barrel with fully multi-coated optics.\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 the highest practical magnification in a Starbase orthoscopic eyepiece — for planetary detail, close double stars, and lunar close-ups on nights when the atmosphere holds steady.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrthoscopic 4-element, 2-group design:\u003c\/strong\u003e low distortion at the center of the field, where high-power detail is formed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43° apparent field of view:\u003c\/strong\u003e slightly narrower than the rest of the Starbase OR line, typical at this short a focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4mm eye relief:\u003c\/strong\u003e tight — workable bare-eyed, demanding for eyeglass wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics:\u003c\/strong\u003e keeps contrast up despite the high element count for the size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25” (31.7mm) barrel:\u003c\/strong\u003e the Takahashi standard, fits existing focusers and diagonals.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eShort-focal-length orthoscopic eyepieces put the most demand on the four-element, two-group design's center-field correction, since that is where all the magnification and detail is concentrated. The OR-6mm holds the same design language as the rest of the Starbase orthoscopic line at a scale built specifically for high power, which is also why the eye relief tightens up and the apparent field narrows slightly compared to its longer siblings.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi TSA-120 (900mm, f\/7.5) the OR-6mm gives about 150x, useful for planetary detail and close double stars on a night of good seeing. On a Takahashi FS-60CB (355mm, f\/5.9) the same eyepiece yields roughly 59x, a solid high-power option for a small travel refractor. Divide any Takahashi tube's focal length by 6mm for the magnification on your own setup — and remember that atmospheric seeing, not the eyepiece, usually sets the practical ceiling on a given night.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 1.25” (31.7mm) barrel fits any Takahashi focuser, star diagonal, or 2″-to-1.25” adapter already in the current lineup, so it slots into an existing eyepiece case without extra hardware.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal:\u003c\/strong\u003e Takahashi lists this eyepiece as non-parfocal, so refocusing is needed when you switch to it from another eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e4mm eye relief is tight:\u003c\/strong\u003e comfortable without glasses; eyeglass wearers may prefer a longer-eye-relief eyepiece for this magnification range, or observing without glasses and adjusting focus to compensate.\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 — it threads directly into a standard 1.25” focuser or diagonal. The tight eye relief takes a bit more care in positioning your eye than a longer-eye-relief eyepiece, but no tools or adjustment are involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-power visual observing — planetary detail, lunar close-ups, and close double stars, on nights with steady seeing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the OR-9mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSame 4-element orthoscopic design; the OR-6mm's shorter focal length gives higher magnification, a narrower field, and tighter eye relief.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 6mm orthoscopic eyepiece with a 43° field and a 1.25” barrel — the highest-power option in the Starbase orthoscopic line, built for planetary and lunar detail. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047075958895,"sku":"TAK-SBP08020","price":91.52,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sbp08020_3.jpg?v=1786912825"},{"product_id":"takahashi-6x30-finderscope-without-bracket","title":"Takahashi 6x30 Finderscope without Bracket","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis 30mm, 6x finderscope locates targets outside the main telescope's narrow field so you can center them before switching to the eyepiece or imaging train. It ships as the finder body only — the mounting bracket is sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you are replacing a 6x30 finder body, building up a finder from separate parts, or need a spare for a second telescope.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm objective, fixed 6x magnification:\u003c\/strong\u003e a wide actual field for star-hopping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire crosshair reticle:\u003c\/strong\u003e for precise centering on a target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17mm eye relief:\u003c\/strong\u003e comfortable for eyeglass wearers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded helical focus with a locking trim ring:\u003c\/strong\u003e holds focus once set.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe eyepiece assembly screws in and out of the finderscope body to reach focus, and a knurled trim ring locks that setting once found. At 122.1mm focal length and f\/4.07, the finder covers an 8-degree actual field of view — wide enough to star-hop confidently before narrowing in at the eyepiece. The dark wire crosshairs sit against the sky rather than obscuring it, and the 35mm outer barrel fits standard 30mm-class finder brackets.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eStar-hopping to deep-sky targets, target acquisition ahead of eyepiece or imaging-train centering, and rough polar alignment.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePairs with the \u003ca href=\"\/products\/takahashi-6x30-finder-scope-bracket\"\u003eTakahashi 6x30 Finder Scope Bracket\u003c\/a\u003e, sold separately. The 35mm outer barrel fits standard 30mm-class finder brackets generally.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBracket sold separately:\u003c\/strong\u003e this listing is the finder body only.\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 — it drops into a 30mm-class finder bracket, and the helical focus with its locking ring sets and holds focus without further adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat bracket does it need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Takahashi 6x30 finder bracket, sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the actual field of view?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e8 degrees, at a 122.1mm focal length and f\/4.07.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it comfortable for eyeglass wearers?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the 17mm eye relief accommodates eyeglasses.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 122.1mm, f\/4.07 finderscope with an 8-degree actual field and 17mm eye relief, for locating targets ahead of the main tube — pairs with the 6x30 bracket.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076024431,"sku":"TAK-TKA00551","price":265.98,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tvf6300_2_2.jpg?v=1786912833"},{"product_id":"takahashi-tpl-50-50mm-plossl-eyepiece","title":"Takahashi TPL-50 50mm Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-50 is the long-focal-length end of Takahashi's TPL Plossl series — a 50 mm eyepiece with a 48° apparent field and 37 mm of eye relief, from four elements in two groups. Where the rest of the TPL range fits a standard 1.25-inch (31.7 mm) barrel, the TPL-50 uses a 2-inch (50.8 mm) barrel, the widest field stop the series offers.\u003c\/p\u003e\u003cp\u003eAt 520 g it is also the heaviest eyepiece in the line, in keeping with its larger barrel and field lens.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you already own, or are adding, a 2-inch diagonal or focuser and want the lowest power and widest true field the TPL series offers — for sweeping the Milky Way, framing large open clusters, or a comfortable wide finder-style view before switching to a higher-power eyepiece. The 37 mm eye relief is generous enough for extended sessions and most eyeglass frames.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 mm focal length:\u003c\/strong\u003e the lowest power and widest true field in the TPL series — see Compatibility for real figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field:\u003c\/strong\u003e the traditional Plossl field width, sharp across the center with mild softening toward the edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e37 mm eye relief:\u003c\/strong\u003e generous, relaxed viewing, comfortable with most glasses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch (50.8 mm) barrel:\u003c\/strong\u003e larger than the rest of the TPL range, which uses a 1.25-inch (31.7 mm) barrel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 elements in 2 groups:\u003c\/strong\u003e the symmetric Plossl configuration, scaled up for the longer focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-coated optics:\u003c\/strong\u003e 99% visible-light transmission with a matte barrel finish to control stray light.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Plossl design pairs two achromatic doublets symmetrically around the field stop — four elements in two groups. At 50 mm focal length the field lens and barrel scale up accordingly, which is why the TPL-50 moves to a 2-inch barrel where the rest of the series stays at 1.25 inches: a 48° field at this focal length needs a wider field stop than a 1.25-inch barrel can pass without vignetting.\u003c\/p\u003e\u003cp\u003eTakahashi describes the TPL series as sharp from the center out to roughly the halfway point of the 48° field, with mild star distortion toward the corners. Takahashi also states that pairing the series with the 2x Ortho Barlow clearly improves flatfieldness — though at 50 mm, doubling the focal length through a Barlow gives up most of the low-power, wide-field advantage that makes the TPL-50 worth owning in the first place.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSweeping the Milky Way and rich star fields\u003c\/strong\u003e at the lowest power your telescope can offer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge open clusters and asterisms\u003c\/strong\u003e that do not fit the field of a shorter-focal-length eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA wide finder-style view\u003c\/strong\u003e for locating targets before switching to higher power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelaxed, extended viewing sessions\u003c\/strong\u003e given the 37 mm eye relief.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 50. An FS-60CB at 355 mm gives about 7x; an FC-100DZ at 800 mm gives about 16x; a Mewlon 210 at 2415 mm gives about 48x.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel:\u003c\/strong\u003e 50.8 mm (2-inch) — this eyepiece needs a 2-inch diagonal or focuser. It will not fit a 1.25-inch visual back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e a 2-inch star diagonal or a focuser drawtube with a 2-inch visual back is required; Takahashi's 2-inch mirror diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Ortho Barlow:\u003c\/strong\u003e Takahashi publishes that flatfieldness across the TPL series clearly improves when used through the 2x Ortho Barlow, at roughly double this eyepiece's magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e for adapter and spacing questions across your imaging or visual train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the one TPL eyepiece that needs a 2-inch diagonal or focuser.\u003c\/strong\u003e The rest of the series shares a 1.25-inch barrel; the TPL-50 does not, and a 1.25-inch visual back will not accept it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° is a traditional field, not an ultra-wide one.\u003c\/strong\u003e An 82° or 100° eyepiece gives a more immersive view at the same low power; the TPL trades that width for a simpler design that still delivers a sharp center field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification depends on your telescope.\u003c\/strong\u003e The same 50 mm gives about 7x on a short 60 mm refractor and 48x on a Mewlon 210 — send us your telescope model and we will confirm where it lands in your eyepiece set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt 520 g, it is worth accounting for\u003c\/strong\u003e in the balance of a lighter refractor's focuser, though most Takahashi drawtubes carry it without issue.\u003c\/li\u003e\n\u003c\/ul\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\u003eIt needs a 2-inch diagonal or focuser rather than the 1.25-inch fitting most eyepieces use — once that is in place, it drops in and you focus like any other eyepiece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 50. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does this one need a 2-inch barrel when the rest of the TPL series doesn't?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA 48° field at 50 mm focal length needs a wider field stop than a 1.25-inch barrel can pass without vignetting, so Takahashi built the TPL-50 on a 2-inch barrel instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — it gives the widest true field and lowest power in the TPL series, suited to large clusters, asterisms and Milky Way sweeping.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e37 mm of eye relief is comfortable for most glasses wearers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with a Barlow?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the 2x Ortho Barlow doubles the magnification and, per Takahashi, improves the TPL series' flatfieldness at the same time, though doing so gives up most of the low-power view this eyepiece is built for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSwapping to a different eyepiece family means refocusing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 50 mm Plossl eyepiece with a 48° field, 37 mm of eye relief and a 2-inch barrel — the widest, lowest-power eyepiece in the TPL range, built for sweeping rich star fields once a 2-inch diagonal or focuser is in place.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076089967,"sku":"TAK-TKA00625","price":900.9,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00625.jpg?v=1786912857"},{"product_id":"takahashi-tpl-6-plossl-eyepiece","title":"Takahashi TPL-6 Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-6 is a 6mm eyepiece from Takahashi's TPL Plossl series, the successor to the older Abbe and LE lines. It uses a 4-elements-in-2-groups Plossl design built with high-refraction, low-dispersion glass, giving a 48° apparent field of view and 4.5mm of eye relief. It weighs 55g and uses the standard 31.7mm (1.25”) barrel.\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 the shortest, highest-power focal length in the TPL series — for planetary detail, lunar close-ups, and tight double stars on nights when the seeing supports it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-element, 2-group Plossl design:\u003c\/strong\u003e the current evolution of Takahashi's Plossl line, replacing the older Abbe and LE series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-refraction, low-dispersion glass:\u003c\/strong\u003e Takahashi states this cuts chromatic aberration at the center of the field to roughly half the level of the Abbe series and two-thirds that of the LE series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultilayer coatings at 99% transmission:\u003c\/strong\u003e keeps the image bright despite the four-element count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatte-finished interior:\u003c\/strong\u003e reduces stray light and internal reflections for better contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field of view\u003c\/strong\u003e and \u003cstrong\u003e4.5mm eye relief\u003c\/strong\u003e at this focal length.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi describes the TPL series as sharp from the center out to roughly halfway across the field, with only mild star distortion at the corners on its own — and notes that pairing a TPL eyepiece with the 2x Ortho Barlow (sold separately) measurably flattens the field, producing close to full-field correction. At 6mm, the TPL-6 sits at the short end of the series, where the Plossl design's center-field sharpness is what matters most for planetary and lunar detail.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi TSA-120 (900mm, f\/7.5) the TPL-6 gives about 150x, a strong planetary and lunar magnification on a night of good seeing. On a Takahashi FS-60CB (355mm, f\/5.9) the same eyepiece yields roughly 59x, useful high power for a small travel refractor. Divide any Takahashi tube's focal length by 6mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 31.7mm (1.25”) barrel fits any Takahashi focuser, star diagonal, or 2″-to-1.25” adapter in the current lineup. Takahashi's own literature notes that combining the TPL-6 with the 2x Ortho Barlow improves flat-field performance across the whole view — worth considering if you already use a Barlow in your kit or are deciding whether to add one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal:\u003c\/strong\u003e a refocus is needed when swapping the TPL-6 in from another eyepiece in your case.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e4.5mm eye relief is tight:\u003c\/strong\u003e comfortable bare-eyed; eyeglass wearers may find a longer-eye-relief eyepiece easier at this magnification, or may prefer observing without glasses and adjusting focus to compensate.\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 — it threads directly into a standard 1.25” focuser or diagonal. The short eye relief takes a little care in eye placement, but there's no assembly involved.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh-power visual observing — planetary detail, lunar close-ups, and tighter double stars, on nights with steady seeing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the Starbase OR-6mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth are 6mm, 4-element eyepieces with a 1.25” barrel. The TPL series uses Takahashi's higher-refraction, low-dispersion glass and multilayer coatings rated at 99% transmission, positioning it a step up from the Starbase budget line at a correspondingly higher price.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 6mm Plossl eyepiece with a 48° field, 4.5mm eye relief, and a 55g weight — the highest-power option in Takahashi's TPL series, built around high-refraction, low-dispersion glass for planetary and lunar detail. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076122735,"sku":"TAK-TKA00619","price":274.56,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00619.jpg?v=1786912858"},{"product_id":"takahashi-7-5x50-finderscope-without-bracket","title":"Takahashi 7.5x50 Finderscope without Bracket","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis 50mm, 7.5x finderscope covers a 6-degree actual field for locating faint targets ahead of the main tube. It ships as the finder body only — the mounting bracket is sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you are replacing a 7.5x50 finder body, building a finder from separate parts, or want to run a guiding camera through the GT Mount Adapter path.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm objective, 7.5x fixed magnification:\u003c\/strong\u003e a 6-degree actual field for star-hopping to faint targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtched crosshair pattern:\u003c\/strong\u003e designed not to obscure faint alignment stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM8 x 0.75 illuminator socket:\u003c\/strong\u003e accepts commercially available reticle illuminators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwappable eyepiece assembly:\u003c\/strong\u003e exchanges for the GT Mount Adapter to run a 31.7mm guiding camera.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA knurled trim ring locks focus once set on the mini-refractor objective, and the etched crosshair pattern is designed to stay visible against the sky without obscuring faint alignment stars. The M8 x 0.75 threaded socket on the body accepts a commercially available reticle illuminator for dark-sky use. The eyepiece assembly can be swapped for the GT Mount Adapter (sold separately), which accepts either a standard eyepiece or a 31.7mm cylindrical guiding camera.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eStar-hopping to faint targets, illuminated-reticle work under dark skies, and guiding-camera use through the GT Mount Adapter.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePairs with the \u003ca href=\"\/products\/takahashi-7x50-finder-scope-bracket\"\u003eTakahashi 7x50 \/ 7.5x50 Finder Scope Bracket\u003c\/a\u003e, sold separately. The GT Mount Adapter and reticle illuminator are also sold separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBracket, illuminator, and GT Mount Adapter are each sold separately:\u003c\/strong\u003e this listing is the finder body only.\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 — it seats in the 7x50 \/ 7.5x50 bracket, and the knurled trim ring locks focus once set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it run a guiding camera?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the eyepiece assembly swaps for the GT Mount Adapter to hold a 31.7mm cylindrical guiding camera.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a bracket?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo, the bracket is sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the actual field of view?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e6 degrees.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 50mm, 7.5x finderscope with a 6-degree actual field, an M8 illuminator socket, and a GT Mount Adapter path to guiding-camera use — pairs with the 7x50 \/ 7.5x50 bracket.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076810863,"sku":"TAK-TKA00555","price":560.56,"currency_code":"CAD","in_stock":false}]},{"product_id":"takahashi-tpl-9-plossl-eyepiece","title":"Takahashi TPL-9 Plossl Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TPL-9 is a 9mm eyepiece from Takahashi's TPL Plossl series, the successor to the older Abbe and LE lines. It uses a 4-elements-in-2-groups Plossl design built with high-refraction, low-dispersion glass, giving a 48° apparent field of view and 6.5mm of eye relief. It weighs 70g and uses the standard 31.7mm (1.25”) barrel.\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 mid-to-high power eyepiece for planetary detail, lunar craters, and closer double stars, with more forgiving eye relief than the shortest focal lengths in the series.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-element, 2-group Plossl design:\u003c\/strong\u003e the current evolution of Takahashi's Plossl line, replacing the older Abbe and LE series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-refraction, low-dispersion glass:\u003c\/strong\u003e Takahashi states this cuts chromatic aberration at the center of the field to roughly half the level of the Abbe series and two-thirds that of the LE series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultilayer coatings at 99% transmission:\u003c\/strong\u003e keeps the image bright across the four elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatte-finished interior:\u003c\/strong\u003e reduces stray light and internal reflections for better contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48° apparent field of view\u003c\/strong\u003e and \u003cstrong\u003e6.5mm eye relief\u003c\/strong\u003e at this focal length.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTakahashi describes the TPL series as sharp from the center out to roughly halfway across the field, with only mild star distortion at the corners on its own — and notes that pairing a TPL eyepiece with the 2x Ortho Barlow (sold separately) measurably flattens the field, producing close to full-field correction. At 9mm, the TPL-9 sits mid-range in the series, balancing usable magnification against comfortable eye relief.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eOn a Takahashi TSA-120 (900mm, f\/7.5) the TPL-9 gives about 100x, a solid all-around planetary magnification. On a Takahashi FS-60CB (355mm, f\/5.9) the same eyepiece yields roughly 39x, useful for brighter deep-sky targets on a small travel refractor. Divide any Takahashi tube's focal length by 9mm for the magnification on your own setup.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 31.7mm (1.25”) barrel fits any Takahashi focuser, star diagonal, or 2″-to-1.25” adapter in the current lineup. Takahashi's own literature notes that combining a TPL eyepiece with the 2x Ortho Barlow improves flat-field performance across the whole view — worth considering if you already use a Barlow in your kit or are deciding whether to add one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eNot parfocal:\u003c\/strong\u003e a refocus is needed when swapping the TPL-9 in from another eyepiece in your case.\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 — it threads directly into a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMid-to-high power visual observing — planetary detail, lunar craters, and double stars.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to the Starbase OR-9mm?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBoth are 9mm, 4-element eyepieces with a 1.25” barrel. The TPL series uses Takahashi's higher-refraction, low-dispersion glass and multilayer coatings rated at 99% transmission, positioning it a step up from the Starbase budget line at a correspondingly higher price.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat telescopes does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAny Takahashi refractor or reflector with a standard 1.25” focuser or diagonal.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 9mm Plossl eyepiece with a 48° field, 6.5mm eye relief, and a 70g weight — a mid-to-high power option in Takahashi's TPL series, built around high-refraction, low-dispersion glass. If you're building a full eyepiece set and want help matching focal lengths to your telescope, send us your setup and we'll work it out with you.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076843631,"sku":"TAK-TKA00620","price":274.56,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00620.jpg?v=1786912886"},{"product_id":"takahashi-baby-q-tube-rings-fsq-85edx","title":"Takahashi Baby Q Tube Rings (FSQ-85EDX)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis clamshell-style tube ring set is sized to the 95mm tube diameter of the FSQ-85EDX (\"Baby Q\") and the FC-100D series, carrying the optical tube on a Takahashi mount dovetail. Interior lining protects the tube's finish, and a 1\/4-20 threaded base also accepts a standard photographic tripod head.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own an FSQ-85EDX or an FC-100D-series optical tube and need to mount it on a Takahashi equatorial mount or a photo tripod.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamshell ring pair:\u003c\/strong\u003e sized to a 95mm tube diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterior lining:\u003c\/strong\u003e protects the tube's finish where the rings clamp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4-20 threaded base:\u003c\/strong\u003e mounts on a standard tripod head as an alternative to a mount dovetail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision-machined construction:\u003c\/strong\u003e for a consistent clamp fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMounting the FSQ-85EDX or FC-100D-series optical tube to a Takahashi equatorial mount, or temporary tripod mounting for guiding-scope duty or wide-field work.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eSized for the 95mm tube diameter shared by the FSQ-85EDX and the FC-100D series. If you are matching this ring to a different Takahashi optical tube, send us the model and we will confirm the fit before you order.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSized to one tube diameter:\u003c\/strong\u003e this ring set is built for 95mm tubes and does not adjust to fit other Takahashi optical tubes.\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 — the clamshell opens, seats around the tube on the interior lining, and closes; the 1\/4-20 base threads onto a tripod head the same way any plate would.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat tube diameter does it fit?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e95mm — the FSQ-85EDX and the FC-100D series.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it mount on a photo tripod?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, through the 1\/4-20 threaded base.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 95mm clamshell tube ring set for the FSQ-85EDX and FC-100D series, with a 1\/4-20 base that also works on a standard tripod head.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076876399,"sku":"TAK-TKA21420S","price":374.66,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tak_tka21420_1_6.jpg?v=1786912888"},{"product_id":"takahashi-toe-5-5mm-eyepiece","title":"Takahashi TOE 5.5mm Eyepiece","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe TOE 5.5 mm is a high-power planetary eyepiece from Takahashi's TOE line, built for lunar, planetary and double-star observing. It gives a 58° apparent field with 15 mm of eye relief, from six elements in four groups — more glass than a classic orthoscopic, arranged to widen the field and push the eye point back without giving up the contrast an ortho is chosen for.\u003c\/p\u003e\u003cp\u003eAt 5.5 mm it is a high-power eyepiece: the number you reach for on a night of good seeing, when a telescope's aperture and the atmosphere both support pushing magnification.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe planets, the Moon and double stars and want high magnification without losing the contrast that separates orthoscopic-class eyepieces from wider, more complex designs. The 58° field is moderate by wide-field standards — wide enough that a planet does not drift out of view quickly on an undriven mount, narrow enough that the design can stay well corrected at high power.\u003c\/p\u003e\u003cp\u003eIt is a visual eyepiece. Imaging trains connect a camera directly and do not use one.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.5 mm focal length:\u003c\/strong\u003e high power on most telescopes — see Compatibility for real figures and the practical limits at this focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e58° apparent field:\u003c\/strong\u003e wider than a classic orthoscopic, with enough margin that a target stays in view for a usable interval on an undriven mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15 mm eye relief:\u003c\/strong\u003e a comfortable eye position rather than the pressed-in view short-focal-length orthos demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix elements in four groups:\u003c\/strong\u003e the extra elements buy field width and eye relief while holding correction across the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal within the TOE range:\u003c\/strong\u003e swap focal lengths mid-session with only a touch of refocusing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePlanetary observing is a contrast problem before it is a resolution problem. The detail that matters — belt structure on Jupiter, the Cassini division, subtle shading on Mars — is low-contrast detail sitting on a bright disc, and scattered light inside the eyepiece raises the background and buries it. That is why the classic four-element orthoscopic held on for decades: fewer air-glass surfaces means less scatter.\u003c\/p\u003e\u003cp\u003eThe TOE design uses six elements in four groups and controls scatter directly, with multi-layer coatings and blackened element edges rather than relying on a minimal element count. The result keeps orthoscopic-class contrast while delivering a 58° field and 15 mm of eye relief — both wider than a four-element design produces at this focal length. Parfocality across the TOE range is a working convenience: changing power on a planet mid-session without hunting for focus keeps you on the target while the seeing holds.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-power planetary detail\u003c\/strong\u003e on nights of good seeing — Jupiter's belts and festoons, Saturn's rings and division, Martian surface shading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing\u003c\/strong\u003e at close-up, crater-wall and rille detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble star splitting\u003c\/strong\u003e at the close end, where high power and clean star images matter most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting a telescope's resolution\u003c\/strong\u003e on a steady night, since 5.5 mm pushes most apertures toward their practical ceiling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e divide your telescope's focal length by 5.5. An FS-60CB at 355 mm gives about 65x; an FC-100DZ at 800 mm gives about 145x; a Mewlon 210 at 2415 mm gives about 439x — above the roughly 420x practical ceiling usually quoted for a 210 mm aperture, so that combination is a seeing-limited, best-nights eyepiece rather than an everyday one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagonal:\u003c\/strong\u003e in a refractor you will normally use it behind a star diagonal. The Takahashi 1.25-inch prism diagonal is a direct pairing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal range:\u003c\/strong\u003e parfocal with the other TOE eyepieces, so changing focal length needs only a touch of refocusing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack focus:\u003c\/strong\u003e for adapter and spacing questions across your visual train, see the \u003ca href=\"\/pages\/takahashi-back-focus-guide\"\u003eTakahashi Back Focus Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.5 mm is a high-power eyepiece, and results depend on the sky.\u003c\/strong\u003e On a smaller aperture like an FS-60CB it stays well within useful range; on a larger telescope like a Mewlon 210 it can exceed the aperture's practical magnification ceiling, and results will depend on seeing more than on the eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a visual eyepiece.\u003c\/strong\u003e Camera trains connect directly to the telescope or its corrector.\u003c\/li\u003e\n\u003c\/ul\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 — it drops into a 1.25-inch diagonal or focuser and you focus. Nothing to assemble or adjust.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat magnification will I get?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYour telescope's focal length divided by 5.5. Send us your telescope model and we will work out where it fits alongside the eyepieces you already own — and whether it is within your aperture's useful range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does it compare to a classic orthoscopic?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA four-element ortho at 5.5 mm gives roughly a 42° to 45° field and short eye relief. The TOE gives 58° and 15 mm of eye relief from six elements, with coatings and blackened edges doing the contrast work the simpler design got from having fewer surfaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it good for deep-sky observing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is built for high-power planetary and lunar detail rather than deep-sky work — for clusters and nebulae, a longer-focal-length, wider-field eyepiece suits better.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with glasses?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e15 mm of eye relief is workable for many glasses wearers, though it depends on your frames and how far they hold the lens from your eye.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it parfocal with my other Takahashi eyepieces?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is parfocal with the rest of the TOE range. Across other Takahashi families, expect to refocus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work on a small telescope, or is it too much power?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn an FS-60CB it gives about 65x, which is a normal high-power step, not an extreme one. It is on larger apertures, closer to their magnification ceiling, that seeing becomes the limiting factor.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 5.5 mm planetary eyepiece with a 58° field and 15 mm of eye relief, built from six elements with the coatings and blackened edges that keep low-contrast detail visible at high power. It is the high-power step in a planetary set, most rewarding on nights when the seeing can support it.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047076909167,"sku":"TAK-TKA00616","price":480.48,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tka00616.jpg?v=1786912894"},{"product_id":"takahashi-collimating-eyepiece-newtonians-cassegrains","title":"Takahashi Collimating Eyepiece for Newtonians \u0026 Cassegrains","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Takahashi Collimating Eyepiece is a machined aluminum sighting tool that inserts into a standard 1.25″ (31.75 mm) eyepiece holder or focuser drawtube. Looking through the central peephole, you see the reflection of your primary mirror (on a Newtonian) or secondary\/corrector assembly (on a Cassegrain or Ritchey-Chrétien) centered on the sighting hole when the optics are aligned. It has no lens elements — this is a mechanical collimation tool, not a viewing eyepiece. At 35 mm in diameter, 45 mm long and 45 g, it threads onto the \u003ca href=\"\/products\/takahashi-newtonian-collimating-tube-crosshair\"\u003eNewtonian Collimating Tube with Crosshair\u003c\/a\u003e for a combined Cheshire-eyepiece setup, or works on its own for a quick sighting check.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Newtonian reflector and adjust your own mirror collimation, or if you run a Cassegrain or Ritchey-Chrétien telescope and check secondary mirror alignment between imaging sessions.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined aluminum body:\u003c\/strong\u003e holds a consistent, repeatable fit in the focuser or eyepiece holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 1.25″ barrel:\u003c\/strong\u003e drops straight into any standard visual back or drawtube, no adapter needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflective sighting face:\u003c\/strong\u003e shows the primary mirror or secondary assembly reflected back through the peephole, centered when collimation is correct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and pocketable:\u003c\/strong\u003e 35 mm diameter, 45 mm long, 45 g — easy to keep with your other collimation tools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe tool is a simple sighting tube: a small peephole at the eye end and a reflective surface at the objective end, with an M36.4 x 1 male thread on the objective side. Used alone, it gives you a fast go\/no-go check of primary mirror centering on a Newtonian. Threaded onto the \u003ca href=\"\/products\/takahashi-newtonian-collimating-tube-crosshair\"\u003eNewtonian Collimating Tube with Crosshair\u003c\/a\u003e, the two work together as a Cheshire eyepiece — the tube supplies a wire crosshair reference, and this eyepiece supplies the sighting hole, giving you a repeatable reference point for centering the secondary mirror shadow on Takahashi Epsilon astrographs and other Newtonian designs.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00441-schema.png?v=1786912645\" alt=\"Takahashi collimating eyepiece TKA00441 half-section dimensional schematic\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePre-session collimation checks on Newtonian reflectors; secondary mirror centering on Cassegrain and Ritchey-Chrétien telescopes; a first-pass sighting reference before fine-tuning with a laser collimator or star test.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits any 1.25″ (31.75 mm) focuser drawtube or eyepiece holder. The M36.4 x 1 male thread on the objective end mates with the Newtonian Collimating Tube with Crosshair for combined Cheshire-eyepiece alignment on Newtonian and astrograph optical tubes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt has no lens elements.\u003c\/strong\u003e It is built for sighting down the optical axis, not for viewing the night sky — a standard eyepiece handles that job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt does not include a crosshair.\u003c\/strong\u003e The crosshair reference for secondary mirror centering comes from the paired Newtonian Collimating Tube, which threads on separately.\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. It inserts into the focuser exactly like an eyepiece, with nothing to calibrate before use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eChecking whether a Newtonian primary mirror or a Cassegrain\/RC secondary is centered on the optical axis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for astrophotography setups?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a visual alignment tool used before imaging, not a component of the imaging train itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need the collimating tube as well?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a full Cheshire-eyepiece setup with a crosshair reference on a Newtonian, yes — the two are designed to thread together.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA machined 1.25″ sighting tool for checking mirror alignment on Newtonian, Cassegrain and Ritchey-Chrétien telescopes, usable alone for a quick check or threaded to the collimating tube for a full Cheshire-eyepiece reference.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047077204079,"sku":"TAK-TKA00441","price":72.93,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tce0020_2_2.jpg?v=1786912905"}],"url":"https:\/\/ontariotelescope.com\/collections\/takahashi.oembed?page=5","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}