{"title":"Sharpstar Telescopes","description":"\u003cp\u003eSharpstar's telescopes include the 50EDPH, 61EDPH III and 94EDPH APO refractors, the Z4 100mm f\/5.5 sextuplet astrograph, and a used EDPH61 II imaging package. Part of \u003ca href=\"\/collections\/telescopes\"\u003eTelescopes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"sharpstar-94edph","title":"Sharpstar 94EDPH","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\" color:black=\"\" mso-color-alt:windowtext=\"\" background:white=\"\"\u003eDiscontinued\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\" color:black=\"\" mso-color-alt:windowtext=\"\" background:white=\"\"\u003eThe brand new 94EDPH is the third type of this Sharpstar EDPH family. Its aperture size is 94mm and the focal length is 517mm, thus the focal ratio is f\/5.5. 94EDPH is designed with triplet air-spaced APO lens structure, including two pieces of ED(extra-low dispersion) glass, which empowers the astragraph to achieve more effective aberration amendment thus to produce more accurate images. With its innate compactness, fashionable appearance, and above all, superb quality, Sharpstar 94EDPH can be applied to both high-end sky-observation and sophisticated astrophotograph.\u003c\/span\u003e\u003cspan arial=\"\" sans-serif=\"\" mso-fareast-font-family:=\"\" microsoft=\"\" yahei=\"\"\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eSharpstar 94EDPH shares the same reducer with its sibling, 76EDPH, which may greatly relieve the inconvenience and troublesome in swapping the 76 to 94.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eThe reducer can reduce the original focal ratio to f\/4.5, supporting full-frame imaging, opening up for our customers more possibilities in exploring the universe.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; word-spacing: 0px;\"\u003e\u003cspan style=\"color: black; mso-color-alt: windowtext; background: white;\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; word-spacing: 0px;\"\u003eSharpstar 94EDPH must be an ideal choice, worthy of consideration, if you are looking for a large-aperture, fast-focal-ratio, quality and lightweight APO refractive telescope.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan arial=\"\" sans-serif=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Yes \/ Yes \/ Yes","offer_id":44013649920111,"sku":"94EDPH","price":2844.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ Yes \/ No","offer_id":44013649952879,"sku":"94EDPH","price":2809.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ No \/ Yes","offer_id":44013649985647,"sku":"94EDPH","price":2809.99,"currency_code":"CAD","in_stock":true},{"title":"Yes \/ No \/ No","offer_id":44013650018415,"sku":"94EDPH","price":2774.99,"currency_code":"CAD","in_stock":true},{"title":"No \/ Yes \/ Yes","offer_id":44013650051183,"sku":"94EDPH","price":2455.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ Yes \/ No","offer_id":44013650083951,"sku":"94EDPH","price":2420.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ No \/ Yes","offer_id":44013650116719,"sku":"94EDPH","price":2420.0,"currency_code":"CAD","in_stock":true},{"title":"No \/ No \/ No","offer_id":44013650149487,"sku":"94EDPH","price":2385.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1591847767__59846.jpg?v=1766558632"},{"product_id":"sharpstar-z4","title":"Sharpstar Z4 100mm f\/5.5 Sextuplet APO Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Sharpstar Z4 is a 100mm f\/5.5 sextuplet APO astrograph designed for serious deep-sky imaging. Its 550mm focal length, integrated flat-field optical design, and 36mm image circle make it a strong match for APS-C astronomy cameras and DSLR\/mirrorless imaging setups.\u003c\/p\u003e\u003cp\u003eUnlike many refractors that require a separate flattener and careful spacing calculation, the Z4 is built as a self-flattened astrograph. For imagers, that means a cleaner camera train and fewer backfocus complications.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Z4 is best for intermediate and advanced astrophotographers who want a dedicated wide-to-medium-field imaging refractor with premium mechanical support. It is ideal for deep-sky imagers using APS-C sensors, cooled astronomy cameras, filter wheels, and guiding setups.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e100mm aperture and 550mm focal length for nebulae, galaxies, and larger deep-sky targets.\u003c\/li\u003e\n\u003cli\u003eSextuplet fully air-spaced APO design with two ED glass elements.\u003c\/li\u003e\n\u003cli\u003eIntegrated flat-field design with no separate flattener required.\u003c\/li\u003e\n\u003cli\u003e36mm image circle suitable for APS-C imaging systems.\u003c\/li\u003e\n\u003cli\u003eLarge 3.4-inch rack-and-pinion focuser with 1:10 fine adjustment.\u003c\/li\u003e\n\u003cli\u003e360-degree rotator for framing targets without disturbing focus.\u003c\/li\u003e\n\u003cli\u003eIncludes M86, M68, M54, and M48 adapter options.\u003c\/li\u003e\n\u003cli\u003eM48 adapter includes internal 2-inch filter thread.\u003c\/li\u003e\n\u003cli\u003e300mm Vixen-style dovetail and multifunction handle for easier setup and balancing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography with APS-C cameras.\u003c\/li\u003e\n\u003cli\u003eNebula, galaxy, star-field, and broadband imaging.\u003c\/li\u003e\n\u003cli\u003ePortable or semi-permanent imaging rigs.\u003c\/li\u003e\n\u003cli\u003eDedicated astrograph setups using filter wheels, OAGs, and cooled cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe Z4 includes a rear M48×0.75 male thread and adapter path through M86×1, M68×1, M54×0.75, and M48×0.75. The M48 adapter supports 2-inch filters. It is designed for imaging and works best on a suitable equatorial or strain-wave mount capable of carrying the 4.3kg OTA plus camera, guider, filter wheel, and accessories.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBest treated as a dedicated imaging astrograph rather than a beginner visual telescope.\u003c\/li\u003e\n\u003cli\u003eDesigned around a 36mm image circle, so full-frame cameras may show limitations at the corners.\u003c\/li\u003e\n\u003cli\u003eA suitable mount, guide system, camera spacing setup, and imaging accessories are still required.\u003c\/li\u003e\n\u003cli\u003eAlthough the optical system is self-flattened, mechanical spacing and tilt control still matter for best results.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Sharpstar Z4 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt is not the first telescope we would normally recommend for a beginner. It is better suited to imagers who already understand polar alignment, guiding, camera spacing, and image calibration.\u003c\/p\u003e\u003ch3\u003eWhat is the Z4 best used for?\u003c\/h3\u003e\u003cp\u003eThe Z4 is best used for deep-sky astrophotography with APS-C cameras, especially targets that benefit from a 550mm focal length.\u003c\/p\u003e\u003ch3\u003eDoes it need a separate flattener?\u003c\/h3\u003e\u003cp\u003eNo. The Z4 is designed as a self-flattened astrograph and does not require a separate field flattener.\u003c\/p\u003e\u003ch3\u003eCan it be used visually?\u003c\/h3\u003e\u003cp\u003eIt is primarily an imaging astrograph. Visual use may be possible depending on adapters, but this is not its main purpose.\u003c\/p\u003e\u003ch3\u003eWhat cameras are best matched to it?\u003c\/h3\u003e\u003cp\u003eAPS-C cooled astronomy cameras and APS-C DSLR\/mirrorless cameras are the best match for the 36mm image circle.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sharpstar Z4 for astrophotographers who want a compact but serious 100mm imaging astrograph with integrated field correction. Choose it when you want a cleaner imaging train and do not want to add a separate flattener. Do not choose it as a first visual telescope or if your main camera is full-frame and you need fully corrected corners across the entire sensor.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":44013790789743,"sku":"Z4","price":3232.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1658369364__71155.jpg?v=1766562842"},{"product_id":"sharpstar-61-edph-iii","title":"Sharpstar 61EDPH III 61mm f\/5.9 Triplet APO Refractor","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Sharpstar 61EDPH III is a compact 61mm f\/5.9 triplet APO refractor designed for portable observing and wide-field astrophotography. With a 360mm focal length, two ED glass elements, and support for a 44mm full-frame image circle when used with the appropriate corrector, it is a versatile telescope for travel rigs, lightweight mounts, and imaging setups.\u003c\/p\u003e\u003cp\u003eThis third-generation 61EDPH improves the optical design, tube mechanics, handle, and dovetail system compared with earlier versions, making it easier to balance and configure for both visual and imaging use.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThis telescope is a strong choice for beginner-to-intermediate astrophotographers, travel imagers, wide-field deep-sky photographers, and visual observers who want a compact APO refractor. It is also useful for experienced imagers who want a lightweight secondary imaging scope.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTriplet air-spaced APO objective with two ED glass elements.\u003c\/li\u003e\n\u003cli\u003e61mm aperture and 360mm focal length for wide-field imaging.\u003c\/li\u003e\n\u003cli\u003eCompact OTA weight makes it suitable for portable mounts.\u003c\/li\u003e\n\u003cli\u003e200mm Vixen-style dovetail helps balance cameras and accessories.\u003c\/li\u003e\n\u003cli\u003eMultifunction handle can accept a universal Vixen-style finder base.\u003c\/li\u003e\n\u003cli\u003eCompatible with optional dedicated full-frame reducer and flattener.\u003c\/li\u003e\n\u003cli\u003eReducer option converts the system to approximately 270mm at f\/4.4.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field nebula and Milky Way imaging.\u003c\/li\u003e\n\u003cli\u003eTravel astrophotography setups.\u003c\/li\u003e\n\u003cli\u003ePortable deep-sky imaging on compact equatorial or strain-wave mounts.\u003c\/li\u003e\n\u003cli\u003eVisual observing of bright deep-sky objects and wide star fields.\u003c\/li\u003e\n\u003cli\u003eBeginner-friendly APO refractor imaging when paired with a suitable mount and corrector.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe 61EDPH III can be paired with Sharpstar’s dedicated 61EDPH III full-frame reducer or full-frame flattener. The reducer uses an M68×1 connection to the focuser and provides an M48×0.75 camera-side thread with 55mm back focus, or M54×0.75 with 75mm back focus when the adapter is removed. The flattener also uses M68×1 to the focuser and M48×0.75 camera-side connection with 55mm back focus, or M54×0.75 with 81.5mm back focus when extended.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFor best astrophotography results, use the dedicated reducer or flattener.\u003c\/li\u003e\n\u003cli\u003eThe reducer and flattener are separate accessories unless specifically bundled.\u003c\/li\u003e\n\u003cli\u003eMount capacity, guiding, camera spacing, and backfocus accuracy still matter.\u003c\/li\u003e\n\u003cli\u003eSmall aperture limits high-power planetary and faint visual observing performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the 61EDPH III good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, it can be a very good beginner imaging refractor when paired with a suitable mount, camera, and corrector. It is compact, forgiving, and well suited to wide-field targets.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best for wide-field astrophotography, portable deep-sky imaging, and travel-friendly visual observing.\u003c\/p\u003e\u003ch3\u003eDoes it require additional accessories for imaging?\u003c\/h3\u003e\u003cp\u003eFor the best star shapes across larger sensors, use the dedicated 61EDPH III reducer or flattener. Camera adapters, guide equipment, and filters may also be required depending on the setup.\u003c\/p\u003e\u003ch3\u003eCan it cover full-frame cameras?\u003c\/h3\u003e\u003cp\u003eThe optical system supports full-frame imaging when used with the appropriate dedicated Sharpstar full-frame reducer or flattener.\u003c\/p\u003e\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\u003cp\u003eIt is not ideal if the customer’s main goal is high-magnification planetary observing, very small galaxies, or maximum visual light gathering.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Sharpstar 61EDPH III for customers who want a small, high-quality APO refractor that can grow from visual use into serious wide-field astrophotography. Choose it for portability and flexibility. Choose a larger aperture telescope if your priority is high-power visual observing or small deep-sky targets.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":44013897121903,"sku":"61EDPHIII","price":847.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/61_edphiii__56593.jpg?v=1766565937"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/collections\/apieiv1rk__70342.jpg?v=1767588243","url":"https:\/\/ontariotelescope.com\/collections\/sharpstar-telescopes.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}