{"title":"Askar FMA and ACL Astrograph Lenses","description":"\u003cp\u003eAskar FMA and ACL lenses are compact apochromatic astrograph lenses that sit between a camera telephoto and a small refractor. The FMA135 (135mm f\/4.5), FMA180 Pro (180mm f\/4.5), FMA230 (230mm f\/4.6) and the 200mm f\/4 ACL200 suit wide-field nebula and Milky Way imaging on light mounts, and the smaller models also work as guide scopes.\u003c\/p\u003e\u003cp\u003eAF kits for the FMA180 Pro and ACL200 allow motorized focusing, and an M42-M48 photo adapter is available for the FMA180.\u003c\/p\u003e","products":[{"product_id":"askar-fma180-pro-180mm-f-4-5-apo-full-frame-lens","title":"Askar FMA180 Pro 180mm f\/4.5 APO Full Frame Lens","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e40mm Aperture Sextuplet APO Lens\u003c\/li\u003e\n\u003cli\u003e180mm Focal Length at a Fast f\/4.5\u003c\/li\u003e\n\u003cli\u003e44mm Image Circle for Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus with M48x0.75 Threads\u003c\/li\u003e\n\u003cli\u003eIntegrated 360° Rotator and Internal Focuser\u003c\/li\u003e\n\u003cli\u003eLightweight 0.8kg Design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FMA180 Pro 180mm f\/4.5 APO Full Frame Lens\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA180 Pro lens integrates a 40mm sextuplet APO optical system into a compact astrograph, delivering a fast f\/4.5 focal ratio and a 180mm focal length for wide-field imaging. Its air-spaced design incorporates two ED glass elements to produce sharp, color-corrected stars across a 44mm image circle, fully illuminating full-frame sensors. Weighing just 0.8kg and measuring 167.5mm in length, the FMA180 Pro provides a standard 55mm back focus for seamless integration into your existing imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSextuplet f\/4.5 APO Optics: A 44mm Full-Frame Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe FMA180 Pro's optical core is a six-element apochromatic design with two extra-low dispersion (ED) elements, engineered specifically for astrophotography. This configuration provides excellent chromatic aberration control, ensuring pinpoint stars without color fringing. The fast f\/4.5 focal ratio allows you to capture significant signal in shorter sub-exposures, reducing demands on your tracking mount.\u003c\/p\u003e\n\u003cp\u003eWith a 44mm image circle, this lens is built to serve modern full-frame CMOS and DSLR cameras. You can capture vast targets like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex without the vignetting or field curvature issues that plague lenses not designed for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePro Astrograph Design: Internal Focusing and a 360° Rotator\u003c\/h3\u003e\n\u003cp\u003eThe \"Pro\" designation signifies key mechanical upgrades for imagers. The internal focusing mechanism moves lens elements internally, eliminating drawtube sag and tilt that can occur with external focusers, especially when supporting heavy filter wheels and cameras. This ensures a rigid, stable optical train throughout your imaging session.\u003c\/p\u003e\n\u003cp\u003eAn integrated 360° rotator allows for precise framing of your target without rotating your entire camera and cable assembly. The OTA also includes a multi-functional finder base and a Vixen-style dovetail plate, allowing it to be used as a primary imaging scope, a high-end guide scope, or a compact visual instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFMA180 Pro vs. FMA180: Key Upgrades for Imaging\u003c\/h3\u003e\n\u003cp\u003eWhile sharing the same core optics as its predecessor, the FMA180 Pro introduces several critical enhancements for astrophotography. These upgrades address the practical needs of remote and automated imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Focuser:\u003c\/strong\u003e The Pro model's internal focusing design provides superior stability and focus retention compared to the external focuser of the standard FMA180. This is a significant advantage for automated focusing routines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Rotator:\u003c\/strong\u003e The addition of a dedicated rotator makes framing targets dramatically easier, a feature absent on the original model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder Base:\u003c\/strong\u003e An integrated finder-style mounting base adds versatility for attaching guide scopes or other accessories directly to the OTA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Askar FMA180 Pro suitable for full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar FMA180 Pro is designed with a corrected \u003cstrong\u003e44mm image circle\u003c\/strong\u003e. This is large enough to fully illuminate the sensors of full-frame cameras (typically 43.3mm diagonal) without significant light fall-off or distortion at the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the FMA180 Pro perform on the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e180mm focal length\u003c\/strong\u003e is an excellent match for very large emission nebulae. Paired with a full-frame camera, the FMA180 Pro can capture the entire North American Nebula (NGC 7000) and the adjacent Pelican Nebula (IC 5070) in a single frame with high resolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the internal focusing on the FMA180 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInternal focusing provides superior mechanical stability. Because no external drawtube moves, it prevents potential sag or tilt, which is critical for maintaining a flat field with heavy cameras and filter wheels. It also ensures the overall length of the instrument remains fixed at \u003cstrong\u003e167.5mm\u003c\/strong\u003e, simplifying cable management.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FMA180 Pro as a guide scope on a larger SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. Its light weight of just \u003cstrong\u003e0.8kg\u003c\/strong\u003e and its Vixen-style dovetail, which can be attached to a larger scope's mounting rings or a finder shoe, make it an exceptional high-quality guide scope. The apochromatic optics ensure tight, round guide stars for precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to connect my astronomy camera to the FMA180 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FMA180 Pro terminates in standard \u003cstrong\u003eM48x0.75 male threads\u003c\/strong\u003e. It is designed for a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e, which is the same spacing required by most DSLRs with a T-ring and dedicated astronomy cameras when used with common filter wheels or off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FMA180 Pro a good choice for planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this lens is a wide-field specialist. Its short \u003cstrong\u003e180mm focal length\u003c\/strong\u003e is designed to capture large swaths of the sky. For planetary imaging of targets like Jupiter or Saturn, you need a telescope with a much longer focal length (typically 2000mm or more) to achieve the necessary magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e180mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eSextuplet air-spaced APO with two ED elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (with internal 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e167.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e0.8kg (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFMA180 Pro OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967778910493,"sku":"ASK-FMA180","price":615.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-FMA180-Pro.jpg?v=1720552327"},{"product_id":"askar-fma135-135mm-f-4-5-apo-lens","title":"Askar FMA135 135mm f\/4.5 APO Lens","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e135mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e30mm Aperture\u003c\/li\u003e\n\u003cli\u003eSextuplet APO Optical Design\u003c\/li\u003e\n\u003cli\u003e280g Total Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FMA135 135mm f\/4.5 APO Lens\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA135 combines a 30mm aperture with a 135mm focal length into a fast f\/4.5 optical system designed specifically for wide-field astrophotography. Its advanced sextuplet air-spaced APO objective, which includes one ED glass element, is housed in a compact 113mm body that weighs only 280g. The design provides a native M42×0.75 thread for secure camera attachment and includes a 1.25\" adapter for use as a visual finder or guidescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSextuplet f\/4.5 APO Optics: 6-Element Flat-Field Design\u003c\/h3\u003e\n\u003cp\u003eUnlike standard telephoto lenses or simple refractors, the FMA135 is a dedicated astrograph with an integrated 6-element optical design. This consists of a three-element (triplet) objective lens and a three-element flattener, working in concert to deliver sharp, color-pure stars across a wide, flat field suitable for modern sensors.\u003c\/p\u003e\n\u003cp\u003eThe inclusion of one ED (Extra-low Dispersion) glass element in the objective significantly suppresses chromatic aberration, eliminating the distracting blue or purple halos around bright stars. The native f\/4.5 focal ratio allows you to capture faint details in large nebulae and star fields with significantly shorter exposure times compared to slower optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e135mm Wide-Field Astrophotography: From Nebulae to Comets\u003c\/h3\u003e\n\u003cp\u003eWith its 135mm focal length, the FMA135 is perfectly suited for capturing some of the sky's largest and most impressive targets. Entire constellations, the vast dust lanes of the Milky Way, the full expanse of the Andromeda Galaxy (M31), or the North American Nebula (NGC 7000) can be framed with room to spare, especially on an APS-C sensor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat Field Imaging:\u003c\/strong\u003e The integrated flattener ensures that stars remain tight, round points from the center to the corners of your image, a critical feature many standard camera lenses lack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Connections:\u003c\/strong\u003e A rear M42×0.75 male thread provides a rigid, threaded connection to your astronomy camera or DSLR T-ring, preventing tilt or flexure during long exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Ready:\u003c\/strong\u003e The front of the lens features a standard 1.25\" filter thread, allowing you to use light pollution or nebula filters to enhance your images directly at the objective.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 280g Multi-Role Instrument: Astrograph, Guider, and Telephoto Lens\u003c\/h3\u003e\n\u003cp\u003eWeighing only 280g with its mounting ring, the FMA135 is an exceptionally versatile instrument that excels in multiple roles. Its minimal weight makes it an ideal imaging optic for small, portable star trackers where every gram counts.\u003c\/p\u003e\n\u003cp\u003eUsing the included 1.25\" adapter, the FMA135 transforms into a high-quality guidescope with a 135mm focal length, perfect for guiding main telescopes with focal lengths up to 1000mm. It can also serve as a premium straight-through finderscope with a low-power 1.25\" eyepiece. For terrestrial photographers, it functions as a compact, manual-focus 135mm telephoto lens with outstanding optical correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFMA135 vs. Camera Lenses: An Astro-Specific Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a high-end 135mm camera lens might offer a faster f-ratio on paper, the FMA135 holds a distinct advantage for astrophotography. Camera lenses are often designed for daytime subjects and must be stopped down to f\/2.8 or f\/4 to correct for coma and astigmatism that distort stars at the edge of the frame, negating their speed advantage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor's Edge:\u003c\/strong\u003e Premium 135mm camera lenses can be faster, some reaching f\/1.8 or f\/2.0, allowing for more light gathering in a single exposure if optical compromises are acceptable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar's Advantage:\u003c\/strong\u003e The FMA135 is optimized for a flat, color-corrected field at its native f\/4.5. It delivers superior star shapes to the edge of the frame without being stopped down and features astronomy-specific mechanics like a locking helical focuser, M42 camera threads, and integrated filter compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of objects can I image with the Askar FMA135 on a star tracker?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e is ideal for large deep-sky objects and constellations. Its 135mm focal length allows you to capture vast targets like the Andromeda Galaxy (M31), the Orion Nebula (M42) region including the Horsehead Nebula, the North American Nebula (NGC 7000), and the Rho Ophiuchi cloud complex in a single frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FMA135 as a guidescope for my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With a focal length of 135mm, the \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e is an excellent guidescope for telescopes with focal lengths up to and beyond 1000mm, including 8\" Schmidt-Cassegrains. Simply attach your 1.25\" guide camera using the included adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat camera connection does the Askar FMA135 have?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e has a standard \u003cstrong\u003eM42×0.75 male thread\u003c\/strong\u003e on the rear. This allows direct, secure connection to most dedicated astronomy cameras and to DSLR or mirrorless cameras via a standard, camera-specific M42 T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FMA135 a true apochromatic (APO) telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The objective is a triplet design that includes one element of \u003cstrong\u003eED (Extra-low Dispersion) glass\u003c\/strong\u003e to provide excellent chromatic aberration correction. The complete optical system is a sextuplet (6-element) design, engineered to deliver color-pure, high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the Askar FMA135?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFocusing is achieved with a smooth, precise helical focuser integrated into the objective lens assembly. You rotate the forward part of the lens to achieve sharp focus. This mechanism is more robust and stable than typical camera lens focusing systems for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 1.25\" filters with the FMA135?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the front of the \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e lens barrel is equipped with a female thread designed to accept standard 1.25\" astronomy filters. This allows you to easily add light pollution, narrowband, or color filters to your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e135mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Design\u003c\/td\u003e\n\u003ctd\u003eSextuplet Air-Spaced APO (with one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e113mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e280g (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImaging Connection\u003c\/td\u003e\n\u003ctd\u003eM42×0.75 Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual\/Guiding Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFMA135 Lens Assembly\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Tube Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Visual Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Screws\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 5\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Drivers\/Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":46790462996765,"sku":"ASK-FMA135","price":461.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-FMA135.jpg?v=1696520355"},{"product_id":"askar-af-kit-for-fma180-pro","title":"Askar AF Kit for FMA180 Pro","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables Electronic Autofocus on the Askar FMA180 Pro\u003c\/li\u003e\n\u003cli\u003eDesigned for Seamless Integration with ZWO EAF\u003c\/li\u003e\n\u003cli\u003eBroadly Compatible with Most Electronic Focusers\u003c\/li\u003e\n\u003cli\u003eSecure, No-Slip Synchronous Belt-Drive System\u003c\/li\u003e\n\u003cli\u003eIncludes Custom Mounting Bracket and Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar AF Kit for FMA180 Pro\u003c\/h2\u003e\n\u003cp\u003eThe Askar AF Kit for FMA180 Pro provides the essential mechanical linkage to integrate your lens with a ZWO EAF or other electronic autofocuser. This kit replaces manual focusing with automated, repeatable precision, allowing you to achieve and maintain critical focus throughout an imaging session. It is designed specifically for the FMA180 Pro astrograph, ensuring a secure, no-slip connection between the focuser motor and the lens's focusing ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAutomated and Precise Focusing for the FMA180 Pro\u003c\/h3\u003e\n\u003cp\u003eBy connecting an electronic focuser to your FMA180 Pro, this kit unlocks the ability for your imaging software to manage focus automatically. This eliminates focus drift caused by temperature changes and achieves a level of accuracy that is difficult to replicate by hand, improving the efficiency and quality of your data acquisition.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Purpose-Built Bracket and Belt-Drive System\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar AF Kit is a rigid, black metal bracket engineered to support the electronic focuser securely. This bracket attaches directly to the body of the FMA180 Pro, replacing the original dovetail plate. A synchronous belt and pulley create a positive, direct-drive connection to the lens's focusing ring, preventing slippage and ensuring the motor's movements translate into precise focus adjustments every time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Askar AF Kit for FMA180 Pro used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis kit is an accessory that allows you to connect an electronic autofocuser, such as the \u003cstrong\u003eZWO EAF\u003c\/strong\u003e, to your \u003cstrong\u003eAskar FMA180 Pro lens\u003c\/strong\u003e. This enables automated, software-controlled focusing, which is crucial for maintaining sharp stars during long astrophotography sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ZWO EAF or FMA180 Pro lens included with the Askar AF Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e The Askar AF Kit includes only the bracket, belt, pulley, and mounting screws required for installation. The Askar FMA180 Pro lens and the ZWO EAF (or any other electronic focuser) must be purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Askar AF Kit work with electronic focusers other than the ZWO EAF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While specifically designed for a perfect fit with the ZWO EAF, the kit is broadly compatible with most other electronic focusers available to amateur astronomers. The bracket provides a stable platform for various motor bodies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar AF Kit attach to the FMA180 Pro lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe installation involves removing the original dovetail plate and finder base from the FMA180 Pro. The new bracket from the kit then bolts directly onto the lens body. The EAF motor attaches to the bracket, and a synchronous belt loops around the EAF's pulley and the lens's focusing ring to complete the connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar AF Kit to keep my FMA180 Pro in focus while imaging the Orion Nebula (M42) all night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, that is its primary purpose. When paired with an electronic focuser and control software, the kit allows you to run autofocus routines periodically throughout the night. This automatically compensates for focus shifts caused by falling temperatures, ensuring your stars remain sharp from the first sub-exposure to the last.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I mount the FMA180 Pro on a small star tracker, will the Askar AF Kit and an EAF add too much weight or bulk?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe kit and an EAF add minimal weight and bulk, but it is a consideration for payload-limited mounts. The main change is the profile of the lens, with the motor extending from the side. You will need to ensure proper clearance and re-balance your setup in both axes after installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":50974208360733,"sku":"ASK-ASKAF180P","price":119.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASK-ASKAF180P-1.jpg?v=1772041888"},{"product_id":"askar-m42-m48-photo-adapter-for-fma180","title":"Askar M42-M48 Photo Adapter for FMA180","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 (2-inch) accessories to the Askar FMA180\u003c\/li\u003e\n\u003cli\u003eConverts the native M42x0.75 T-thread to a larger M48x0.75 thread\u003c\/li\u003e\n\u003cli\u003eEngineered for a precise fit with the FMA180 optical train\u003c\/li\u003e\n\u003cli\u003eEnables the use of full-frame camera adapters and 2-inch filter wheels\u003c\/li\u003e\n\u003cli\u003eMachined from metal for a secure, non-flexing connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eM42-M48 Photo Adapter for FMA180\u003c\/h2\u003e\n\u003cp\u003eThis M42-M48 photo adapter is the essential component for connecting larger format imaging accessories to your Askar FMA180 astrograph. It directly converts the FMA180's standard M42x0.75 T-thread output to the wider M48x0.75 thread common on 2-inch filter wheels, filter drawers, and full-frame camera T-rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM42 to M48 Conversion for the Askar FMA180\u003c\/h3\u003e\n\u003cp\u003eThe Askar FMA180's native M42 rear thread is ideal for many cameras, but it can become a bottleneck for imagers using full-frame sensors or 2-inch filter systems. This adapter solves that problem by providing a secure, correctly spaced M48 connection point, which helps minimize vignetting and allows you to integrate your existing M48 accessories into the FMA180's imaging train without compromise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the M42-M48 adapter for the FMA180?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main function is to convert the Askar FMA180's standard M42 T-thread to a larger M48 thread. This allows you to attach accessories that use the M48 standard, such as 2-inch filter drawers or T-rings for full-frame DSLR and mirrorless cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this FMA180 adapter work with other telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically designed for the Askar FMA180. It is machined to ensure not only a correct thread fit but also to maintain the precise back focus required by the FMA180's optical design. Using a generic adapter could lead to spacing errors and degraded image quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I attach to my FMA180 with this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter opens up compatibility with a wide range of M48-threaded accessories. Common examples include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-inch Filter Wheels and Drawers:\u003c\/strong\u003e For convenient multi-filter imaging sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Frame Camera Adapters:\u003c\/strong\u003e M48 T-rings are preferred for larger sensors to reduce vignetting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-Axis Guiders (OAGs):\u003c\/strong\u003e Many larger OAGs use M48 threads for a more rigid connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this M42-M48 adapter change the back focus of the FMA180?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is engineered to be a part of the FMA180's intended imaging train. Its optical length is factored into the system's design. You must still ensure that your camera sensor is placed at the correct back focus distance as measured from the rear flange of this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this the same as a generic M42 to M48 step-up ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it serves a similar function, it is not the same. This is a purpose-built adapter designed to integrate mechanically and optically with the Askar FMA180. A generic step-up ring may not provide the correct mechanical stability or spacing for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the M42-M48 adapter on the Askar FMA180?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. You typically unthread the existing M42 adapter or extension from the rear of the FMA180's focuser or optical train. Then, you carefully thread the M42-M48 adapter in its place, ensuring it is snug but not overtightened.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851339919645,"sku":"ASK-ASKARM4248","price":23.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-M42-M48-photo-adapter-for-FMA180-1_a1088701-2d55-4de5-9520-c65b197de60a.jpg?v=1788401805"},{"product_id":"askar-acl200-af-kit","title":"Askar ACL200 AF Kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds electronic autofocus capability to the Askar ACL200 lens\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration with ZWO EAF and other electronic focusers\u003c\/li\u003e\n\u003cli\u003eIncludes a dedicated mounting holder and synchronous belt system\u003c\/li\u003e\n\u003cli\u003eReplaces the stock dovetail with a Vixen-style plate for secure mounting\u003c\/li\u003e\n\u003cli\u003eEnables precise, remote focus control for astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar ACL200 AF Kit\u003c\/h2\u003e\n\u003cp\u003eThe Askar ACL200 AF Kit is the definitive solution for adding precise, automated focusing to your Askar ACL200 camera lens. This mechanical kit provides the essential hardware to integrate a ZWO Electronic Automatic Focuser (EAF) or other compatible motor, enabling you to achieve critical focus remotely through software. By motorizing the ACL200's manual focus ring, you can compensate for temperature shifts and nail perfect stars without touching your imaging rig. Please note, the ACL200 lens and the ZWO EAF are for demonstration purposes and must be purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAutomated Focusing for the Askar ACL200 Lens\u003c\/h3\u003e\n\u003cp\u003eAs electronically-assisted astronomy becomes standard practice, motorized focus is no longer a luxury but a necessity for sharp, consistent images. This AF kit is designed specifically for the ACL200 lens, allowing you to connect an electronic focuser and control it from your computer. This unlocks the ability to use autofocus routines in popular acquisition software, ensuring your images remain critically sharp throughout an entire imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRobust Construction for Reliable Autofocus\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar ACL200 AF Kit is a rigid, black-anodized holder that securely cradles the electronic focuser and attaches directly to the lens collar. A synchronous belt and pulley system translates the motor's precise movements to the lens's focus ring, delivering smooth and accurate adjustments. The kit also includes a Vixen-style dovetail plate, replacing the lens's original foot and providing a stable, industry-standard connection to your telescope mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the Askar ACL200 AF Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar ACL200 AF Kit is a mechanical adapter that allows you to attach an electronic focuser, such as the ZWO EAF, to your Askar ACL200 lens. This enables you to achieve precise, automated focus control from a computer, which is essential for modern astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar ACL200 AF Kit include the ZWO EAF or the lens itself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eNo, it does not.\u003c\/strong\u003e This is a critical point. The kit contains only the mechanical hardware (holder, belt, pulley, screws, dovetail plate) required to connect a focuser to the lens. The Askar ACL200 lens and the ZWO EAF (or any other electronic focuser) must be purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat electronic focusers are compatible with the Askar ACL200 AF Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe kit is specifically designed for a seamless fit with the popular \u003cstrong\u003eZWO EAF\u003c\/strong\u003e. However, its design may allow it to work with other electronic focusers that share a similar form factor and shaft size, though compatibility is not guaranteed with other brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar ACL200 AF Kit attach to a telescope mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe kit includes an Askar Vixen-style dovetail plate. This plate attaches to the bottom of the lens collar and the EAF holder, replacing the original mounting foot. You can then clamp this dovetail plate directly onto any mount equipped with a Vixen-style saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging the Andromeda Galaxy (M31) with my ACL200. How does this kit help over a long night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAs ambient temperature drops during the night, the focus of your lens will shift, softening your images. The Askar ACL200 AF Kit, paired with an EAF and software, allows you to run autofocus routines periodically. This automatically corrects the focus, ensuring your stars remain sharp in every sub-exposure, which is crucial for a detailed final image of M31.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar ACL200 AF Kit on a portable star tracker for wide-field targets like the Rho Ophiuchi cloud complex?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The kit provides a secure Vixen dovetail, which is a standard mounting interface. As long as your star tracker has a Vixen-style saddle, the entire assembly (lens, camera, and AF kit) will mount securely, allowing you to benefit from automated focusing even with a lightweight, portable setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851340968221,"sku":"ASK-ASKAREAFKIT","price":151.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-ACL200-AF-Kit-1_83e65b98-4f98-42b0-aaa7-b125f265b515.jpg?v=1788401829"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/askar-fma-and-acl-astrograph-lenses.oembed","provider":"David Astro","version":"1.0","type":"link"}