{"title":"Askar Astrographs","description":"\u003cp\u003eAskar's astrograph range spans the FMA135, FMA180 Pro and FMA230 mini APOs, the 50P, the 60F to 131F flat-field quadruplets, the SQA55 to SQA130 quintuplet Petzvals, the FRA300 Pro to FRA600 quintuplets, the PHQ series from 65 to 151mm, and the modular Askar V system. Part of \u003ca href=\"\/collections\/astrographs\"\u003eAstrograph Telescopes\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"askar-fma135","title":"Askar FMA135 30mm f\/4.5 Mini APO Astrograph","description":"\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255); font-family: Arial;\"\u003e\u003cspan style=\"font-size: 12pt;\"\u003eThe very new beginning of year 2021 witnessed the advent of the Askar FMA135 astrograph which has inherited the consistent quality, compactness and versatility, from the FMA family while possessing incomparable \u003c\/span\u003especialty\u003cspan style=\"font-size: 12pt;\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"font-family: ????; font-size: 14px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr style=\"text-align: justify; background-color: rgb(255, 255, 255); font-size: 12pt;\"\u003e\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255);\"\u003eAs its name indicates, FMA135 was born with a primary objective plus a flattener. The primary objective features an APO triplet structure with a diameter of 35mm and a focal length of 135mm, one of which is an ED glass.\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"text-align: justify; background-color: rgb(255, 255, 255); font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: ????;\"\u003eThe flattener contains three elements which is designed to support APS (advanced photo system) sky imaging and to control the performance at the edge of the photo. The exquisite optical design is the major contribution for its matchless ability in both visual observation and astrophotography as well as chromatic aberration control.\u003c\/span\u003e\u003cbr\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0); font-family: ????;\"\u003eFurther, the Askar FMA135 can also work as an excellent finder or guider. Its lightness and grace make it possible to attach the FMA135 to various cameras with corresponding adapters. Once attached, the FMA135 turns to be a 135mm manual lens, which will absolutely bring you an magnificent experience in ground object imaging.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThere is 1.25\" female thread at the front of the astrograph suitable for all purchasable 1.25\" filters and standard M42×0.75 male thread at the back which accommodates most stock DSLR or astronomy cameras (an extra adapter is needed). Our standard configuration includes a tube ring for the installation of Vixen finder base, a 1.25\" visual back for the attachment of an eyepiece or a guiding camera as well as a high-quality focuser (with thread) and a setting thread to avoid any deviation in astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eAs an ingenious optical design, our FMA135 will definitely offer you a super imaging experience.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e FMA135 can be used in 4 different setups\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; color: rgb(102, 102, 102); text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"margin: 0px; padding: 0px; text-align: justify; background-color: rgb(255, 255, 255);\"\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 mm f\/4.5 as a telephoto lens\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe manual APO telephoto lens is corrected up to full-frame. From the T2 thread you have 55 mm working distance. Ideal for system cameras, DSLR and of course astro cameras. The telephoto lens is so compact that it can be used hands-free. The high speed of f\/4.5 allows short exposure times even under difficult lighting conditions.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 f\/4.5 as astrograph\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAstrophotographers will be delighted with this compact telephoto lens. Stars up to the edge are imaged crispy sharp, when using cameras up to APS-C format. With 55 mm working distance (T2 mount), you can connect all common cameras. The multi-function mount allows easy adaptation to the finder shoe of your telescope or to a piggyback camera mount via the 1\/4\" female thread.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 as compact APO refractor and mini guide scope\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe objective provides enough working distance for a 1.25\" star diagonal and standard 1.25\" eyepieces. You can make wonderful wide-field observations or simply connect an autoguider and track your telescope cleanly.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eThe FMA 135 as a spotting scope\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe high-contrast optics enable exciting wildlife and landscape observations. In just a few steps, you have turned the telephoto lens into a compact and crisp spotting scope. You can use all common photo tripods, the adapter is already included.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013648248943,"sku":"FMA135","price":477.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA135__27117.jpg?v=1766558604"},{"product_id":"askar-fma230-f-4-6-triplet-with-reducer","title":"Askar FMA230 50mm f\/4.6 APO Astrograph with Reducer","description":"\u003cspan style=\"font-family: Arial;\"\u003eThe Askar FMA230 has a compound lens system. The front objective lens comprises three lenses and the posterior reducer is composed of four lenses and thus it’s sometimes dubbed as a “three at the front and four at the rear” system. The aperture size of the objective lens is 50mm and the original focal length is 275mm thus we’ve got a relatively fast focal ratio of f\/5.5. The objective lens contains two ED glasses which are adapted to cure chromatic aberrations.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eOne can barely find an equal counterpart in the market as designing a three-element apochromatic objective lens in astrograph with such size demands more on craftsmanship and processing technique. We made it because we consistently cling to the belief that we have to deliver a better imaging result to our customers. The FMA230 can solely function as a lens to observe the ground scenery or stars in the sky, or as a telescope for direct-focus photography. You should just fine-tune the helical focuser to perfectly focus without adding extra optical devices.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe four-element reducer is a 0.84×optical device which can change the the FMA230 into a 50mm-aperture astrograph with a focal length of 230mm and a focal ratio of f\/4.6. The reducer is designed specially for sophisticated astrophotography, which plays an essential role in improving the image quality generally across the whole field of view. And it pays special attention to the stars at the edge of the image. The pictures will be greatly enhanced and detailed under the help of this dedicated reducer even the imaging equipment you use is a rather professional full-frame ordinary or astronomy camera.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold; font-family: Arial;\"\u003eAskar FMA230 is equipped with useful standard accessories.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe pair of tube rings are artistically pierced. Its stalks are lengthened which means that the tube rings provide more room for the devices, like a camera, that are attached to the FMA230, so they won’t collide with the dovetail plate under the astrograph. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe FMA230 comes with a Vixen-style dovetail plate. Screw the tube-ring-wrapped astrograph onto the dovetail plate and then directly slide the assembly into the slot on top of an equatorial mount. The slot at the center of the dovetail plate is carved for the attachment to a tripod. It’s quite convenient and helpful especially when you carry out some ground imaging or observation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eIn order to solve the awkwardness of carrying around your astrograph when you engage in field astrophotography, the FMA230 is designed with a pretty-looking and utility handle. The detachable handle is installed on the top side of the tube ring. The handle is not just literally a handle, the dovetail slot carved out of the handle can also be a base for the attachment of finders, guiders or ASIAIRs that have a corresponding dovetail foot. So you have more room to integrate as many accessories as possible. Besides, the handle is carved with 45°Arca-swiss style slots at the sides, so an upside-down handle can be directly slid into a corresponding Arca-swiss clamp on a camera tripod.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe lightweight and compact FMA230 is a new sibling from the Askar FMA- family, it will definitely bring your observing and imaging experience to a whole new level! \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013687996527,"sku":"FMA230","price":1008.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA230_2525202__14049.1682635769.1280.1280.jpg?v=1766559793"},{"product_id":"askar-fra500-astrograph","title":"Askar FRA500 Astrograph","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eAskar FRA500 is typically a wonderful mix of pragmatism and aesthetics. The astrograph shows smooth lines and a sound layout of components. From the front, the Askar FRA500 has an impressive dew shield decorated with a classic bright-red bezel ring. The total length of FRA500 is 452mm when the dew shield is stretched out and 410mm when contracted back. At the tail end of the astrograph locates a 3.5\" massively-built focuser with dual-speed hand knobs (twin knobs for coarse adjustment and one 1:10 fine adjustment knob), which is of great use in real observation or astrophotography.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe astrograph wears smooth coating and is evenly finished. The graduation inside of the focuser is quite clear and easily readable. The focuser is tough and solid, and on the left side of it, there is a standard finder base with a silver thumb screw. So the FRA500 can piggyback carry finders, guiders or other potential astronomy accessories.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eAskar FRA500 comes also with a pair of sought-after tube rings. On the top of the tube rings attached a handle and at the bottom, there is an Askar Losmandy-style dovetail plate. The combination of milk-white main tube and dew shield together with a high-gloss piano-black focuser makes the optical tube assembly calm and deep which is offset by the bright red decorative ring and tube rings.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe Askar FRA500 is 410mm long and weighs about 4kg , so it’s quite convenient for users to carry around or mount on an EQ mount. It’s particularly suitable for astronomy enthusiasts who frequently engage in long-distance trips or out-door astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eAskar FRA500 together with the FRA- family is well received for large aperture, fast speed, delicate focusing system, unique optical design and the subsequently high-quality imaging results. Wish the Askar FRA500 be a loyal companion alongside your journey of astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013705625711,"sku":"FRA500","price":2899.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1629350823__22501.jpg?v=1766560222"},{"product_id":"askar-107phq-super-apo","title":"Askar 107PHQ Super APO","description":"\u003cdiv align=\"center\" style=\"outline: none; box-sizing: border-box; margin: 0px; padding: 60px 0px 0px; color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\" line-height:=\"\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAs the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astrophotography, or an enthusiast who has been quite familiar with all equipment and devices, you can always find Askar 107PHQ a useful astrograph which is functionally practical and physically attractive.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eIt's especially amateur or beginner friendly since you don't need to attach an extra field flattener to get a satisfactory picture. And for the fact that you don't need a flattener and you can easily get over back-focus calculation and confusing connection steps, all you need to do is to equip your 107PHQ with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.  Askar 107PHQ, a versatile all-rounder.  Askar 107PHQ can literally be applied in any conceivable situations, and that’s the top reason why 107PHQ is produced: to slash as much trouble for users as possible.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe sleek 107PHQ is assembled with high-quality CNC-machined components and wrapped with smooth coating. The calm and seriousness is offset by the bright green decorative rings or knobs. The 3.4\" rigid focuser is capable of handling a load of 8kg. It’s designed with a long travel distance of 95mm, which is suitable for visual observation. And it's been optimized especially for astrophotography.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: center;\"\u003eThe built-in Flatfield lens is a great contribution to Askar 107PHQ’s imaging ability. It supports 44mm full-frame imaging. The stars around the corner of the images seldom suffer from distortion or deformation. At the center of its field of view, the RMS radius is merely 3um. Even a fastidious user can also be satiated when it comes to the shape of stars. Askar 170PHQ can effectively handle with problems of field curvature and vignette.\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; text-align: center;\"\u003e\u003cspan style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"text-align: center; font-family: Arial;\"\u003eThe standard package includes an Askar 107PHQ OTA, a set of four-piece M86-M48 adapters, a pair of tube rings, a 300mm Askar Vixen-style dovetail plate and a high-quality aluminum suitcase.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742653551,"sku":"107PHQ","price":3334.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111037__64264.jpg?v=1766561453"},{"product_id":"askar-80phq-refractive-astrograph","title":"Askar 80PHQ Refractive Astrograph","description":"\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei center font-size:=\"\" text-align:=\"\"\u003eAskar introduces the brand-new 80PHQ refractive astrograph, and it’s the second long-focal-ratio astrograph from the PHQ- family.\u003c\/span\u003e\u003cdiv\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 14px; color: rgb(68, 68, 68);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe overall finish of 80PHQ is evenly painted. The ivory and flawless coating of the main tube feels comfortably pimply, which can not only increase your grip, preventing the telescope from slipping off from your sweaty hands, but also improve its texture, avoiding the tedious monotony.  \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eA pair of clamshell-style CNC-manufactured black tube rings tightly hold the OTA. So you can just turn two locking screws to loosen or tighten the tube rings simplifying the setup by avoiding the frequent use of small tools like Allen wrenches or socket head screws. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThe bright green dust cap, handle, locking screws, focusing knob and decorative rings add more energy and vitality to the otherwise deep and profound astrograph. White and green is the classic combination for PHQ series. \u003c\/span\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003eThere is a 3\" rack-and-pinion rigorous focuser on the rear end of the telescope. It’s a smooth focusing unit with dual-speed adjustment. 80PHQ’s rotator is marked with precise graduation which makes your previous subjective adjustment more accurate.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: ????, \" microsoft yahei font-size: text-align: center\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003eThe Askar 80PHQ inherits the optical design of the PHQ- family, adopting a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It’s worth mentioning that all astrographs from PHQ- family come with an integrated lens combination rather than simply placing three major lenses and a corrector together in a line. In another word, the whole optical system cannot solely perform without any piece of these lenses. This structure design leads to a more rational lens arrangement, better vignette control and superior image quality. The focal ratio of 80PHQ is f\/7.5. It’s a “long” focal-ratio astrograph compared with other counterparts from Askar. It’s a little bit longer even compared with 107PHQ which is f\/7 in focal ratio.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-size: 14px; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"text-align: center; font-family: ????, \" microsoft yahei color: rgb\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eSome users may be frustrated that it’s hard to make a trade-off between 107PHQ and 80PHQ, since there seems to be so much in common. And especially for those who are new to astrophotography, the complicated designations and confusing numbers are really a major obstacle when they hopefully try to pick out just the proper one from oceans of dazzling products.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eIndeed, 170PHQ and 80PHQ are similar in many aspects partially because they are both the newly-developed refractive astrographs from the same family. However even if they all have excellent mechanical design and sophisticated optical system, there are noticeable differences between these two.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eAt the first glance, Askar 80PHQ is much more compact. 107PHQ is 603mm in length and weighs 5.7kg whereas 80PHQ is 448mm in length and weighs 3.9kg. So if your equatorial mount is not capable of holding heavy telescopes, or if you are quite tired of carrying a bulky long focal-ratio telescope travelling all around, then 80PHQ may be a great option.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"\"\u003e\u003cspan style=\"font-size: 14px;\"\u003eLike 107PHQ, you don't need to calculate the back focus distance within the connection limit. Besides, users don't need to add an extra 1× flattener due to its powerful flatfield optical design, which simplifies the operation.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left; font-size: 14px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\u003c\/span\u003e\u003c\/div\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013742981231,"sku":"80PHQ","price":2174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1648111412__64065.jpg?v=1766561462"},{"product_id":"askar-fra300-pro-quintuplet-astrograph","title":"Askar FRA300 Pro Quintuplet Astrograph","description":"\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial new roman color:black\u003eSince their\r\ninception, Askar FRA series short focal ratio astrograph have been very well\r\nreceived by astronomical amateurs. This year, we launched the Askar FRA300 Pro —— the\r\nsmallest 60mm F\/5 Petzval astrograph with the fastest native focal ratio in the\r\nFRA series so far, its focal length is 300mm. The star is sharp and delicate.\r\nAt the center of its field of view, the RMS radius can reach 2um. Even a\r\nserious user can also be satisfied when it comes to the shape of stars. It\r\nperforms excellence with full-frame and supports 44mm imaging, which is a rare\r\nastrograph for amateur astronomers. Compared with F\/6 or F\/7,F\/5 can\r\neffectively reduce the exposure time, helps you get the same exposure in less\r\ntime. In addition, the entire OTA is compact, making it the portable choice for\r\nfield photographers.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe Askar FRA300 Pro 's\r\nobjective lens adopts a quintuplet fully air-spaced structure, including one\r\npiece of ED glass, it also adopts a fully-multi-coating to effectively remove\r\nstray light.\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial new roman color:black\u003eIn particular, the\r\nrear group lens adopts the two pieces of far-separated refractive lenses, which\r\nimproves both the star quality and the aberration correction performance , and\r\nhas a very good control of full-frame peripheral light reduction.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThanks to the\r\nnative Petzval design, the user does not need to calculate the backfocus, as\r\nlong as the focus is within a certain range is the optimal position.\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family:\" arial yahei color:black\u003e\r\n\u003cbr\u003e\r\nMechanically\u003c\/span\u003e\u003cspan style=\"font-family:\" microsoft yahei mso-ascii-font-family:arial arial\u003e,\u003c\/span\u003e\u003cspan style=\"font-family:\" arial yahei color:black\u003eFRA300 Pro is\r\nassembled with high-quality CNC-machined components , wrapped with smooth spray\r\ncoating and light oxidation process, both beautiful and practical. The tube\r\nring design is equally lightweight and stylish. Despite the increased cost, we\r\nwant enthusiasts to use the FRA300 Pro that perform well in every way and are\r\nconsidered in every detail.\u003c\/span\u003e\u003cspan style=\"font-family:\" arial mso-fareast-font-family: new roman mso-fareast-language:en-ca\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe focuser is\r\n2.5\"rack-and-pinion focuser, which is solid and beautiful. It's designed\r\nwith dual-speed hand knobs, twin knobs for coarse adjustment and a fine\r\nadjustment knob to accurate the focus, equipped with a universal M48X0.75\r\nthread adapter. There are also two separate M54X0.75 and M48X0.75 adapters in\r\nthe standard kit for easy access to a variety of imaging equipment and\r\naccessories. The end is equipped with a 360° rotator, which is convenient for\r\nusers to rotate at any angle when shooting. \u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eFRA300 Pro also\r\ncomes standard with a multi-function handle and a 300mm vixen-style dovetail\r\nplate, which can be directly connected to various mounts and accessories, the\r\nmulti-functional handle can also be connected to the universal vixen-style\r\nfinder base. The 300mm dovetail plate allows the astrograph to maintain balance\r\non the mount.\u003c\/span\u003e\u003c\/p\u003e\u003cbr class=\"innova\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013766639727,"sku":"FRA300","price":1376.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FRA300-1__96609.jpg?v=1766562372"},{"product_id":"askar-65phq","title":"Askar 65PHQ","description":"\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"font-size: 12pt; color: rgb(68, 68, 68); font-family: Arial;\"\u003e65PHQ has a smaller size than other PHQ astrographs. 65PHQ has a focal ratio of f\/6.4 and a focal length of 416mm. Instead of the quadruplet structure of other PHQs, the 65PHQ is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations. With its self-flattening design, 65PHQ offers strong advantages in the astronomical shooting. It supports the full-frame image circle and has a fine spot diagram with tiny distortions of the peripheral stars.\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); font-family: Arial;\"\u003e\u003cbr style=\"font-size: 12pt;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68);\"\u003e65PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The OTA weighs 2kg, and the full package with tube rings, etc. weighs 2.8kg. The 2.5” rigid focuser comes with a new-type 360° rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.\u003c\/span\u003e\u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003e \u003c\/span\u003e\u003cbr style=\"outline: none; box-sizing: border-box; color: rgb(68, 68, 68); text-align: justify;\"\u003e\u003cspan style=\"color: rgb(68, 68, 68); text-align: justify;\"\u003eIt is also a nice choice for your visual observation. With different diagonals and various eyepieces and it can also achieve a perfect focus. It can even be used to observe planets with a super-high magnification eyepiece. The 65PHQ contains a multifunctional handle, a 300mm dovetail plate, and sturdy double tube rings. It is small in size and light in weight, which perfectly caters to your need for viewing and shooting.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013799506031,"sku":"65PHQ","price":1304.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1669614699_252520-_252520Edited__57188.1682636037.1280.1280.jpg?v=1766563134"},{"product_id":"askar-fma180-pro","title":"Askar FMA180 Pro 40mm f\/4.5 APO Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA180 Pro is a compact 40mm f\/4.5 sextuplet air-spaced APO astrograph designed for deep-sky astrophotography and visual observation. Building on the original FMA180, the Pro model introduces a 360° camera rotator, integrated finder base with bracket, and an internal focusing mechanism — all in a lightweight 0.8 kg package that delivers outstanding chromatic aberration correction across a 44mm full-frame image circle.\u003c\/p\u003e\n\n\u003cp\u003eThe sextuplet optical design uses a three-lens-front, three-lens-rear configuration with two ED (extra-low dispersion) glass elements, providing excellent colour correction and contrast across the full image field. The result is a sharp, flat, and colour-neutral image from edge to edge — well-suited for both one-shot colour and monochrome camera setups.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSextuplet APO Design\u003c\/strong\u003e — Six air-spaced lenses with 2× ED glass for exceptional chromatic aberration correction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal Focusing Mechanism\u003c\/strong\u003e — Promotes stability and eliminates image shift during focus adjustments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° Camera Rotator\u003c\/strong\u003e — Allows framing adjustments without repositioning the mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Finder Base \u0026amp; Bracket\u003c\/strong\u003e — Supports guide cameras or finder scopes directly on the OTA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e150mm Vixen Dovetail Plate Included\u003c\/strong\u003e — Ready to mount on any Vixen-compatible saddle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-Frame Coverage\u003c\/strong\u003e — 44mm image circle supports APS-C and full-frame sensors\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Field Reducer\u003c\/strong\u003e — Optimized optical path for fast f\/4.5 imaging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 2\" Filter Thread\u003c\/strong\u003e — M48×0.75 rear connection with integrated 2\" filter thread for narrowband or broadband filters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Use\u003c\/strong\u003e — Can be used as a standalone astrograph or mounted to another telescope's finder base as a guide scope (with Vixen plate detached)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and Lightweight\u003c\/strong\u003e — 167.5mm total length and 0.8 kg make it ideal for travel, dual-rig setups, and lightweight mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eOptical Design\u003c\/h2\u003e\n\u003cp\u003eThe FMA180 Pro uses a sextuplet air-spaced APO configuration — three lenses in front and three in the rear — two of which are ED glass elements. This design provides the chromatic aberration correction of a premium apochromat in a physically short tube, enabling a fast f\/4.5 focal ratio at just 180mm focal length. The 55mm standard back focus and M48×0.75 rear thread ensure compatibility with a wide range of imaging cameras, filter drawers, and off-axis guiders.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's New Compared to the FMA180\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdded 360° rotator for framing flexibility\u003c\/li\u003e\n  \u003cli\u003eAdded integrated finder base and bracket for guide scope or finder scope mounting\u003c\/li\u003e\n  \u003cli\u003eInternal focuser design replaces external focuser for improved rigidity\u003c\/li\u003e\n  \u003cli\u003e150mm Vixen dovetail plate included in the package\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImaging Performance\u003c\/h2\u003e\n\u003cp\u003eThe FMA180 Pro has been used to image a wide range of deep-sky objects including the Rosette Nebula, Orion Nebula, Spaghetti Nebula, Horsehead Nebula, IC 443, NGC 2174, and more — paired with cameras such as the ZWO ASI2600MM Pro, ASI294MC, and ASI294MM Pro. Its fast focal ratio and full-frame coverage make it well-suited for wide-field nebula imaging, Milky Way photography, and multi-panel mosaics.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAperture\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eSextuplet air-spaced APO with 2× ED glass\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\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm (full-frame)\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.8 kg (including tube ring and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 with built-in 2\" filter thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFocuser Type\u003c\/td\u003e\n\u003ctd\u003eInternal focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRotator\u003c\/td\u003e\n\u003ctd\u003e360°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDovetail\u003c\/td\u003e\n\u003ctd\u003e150mm Vixen\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePackage Contents\u003c\/td\u003e\n\u003ctd\u003eFMA180 Pro OTA, instruction manual\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAskar FMA180 Pro OTA (with integrated rotator and finder base)\u003c\/li\u003e\n  \u003cli\u003e150mm Vixen dovetail plate\u003c\/li\u003e\n  \u003cli\u003eM48×0.75 rear adapter\u003c\/li\u003e\n  \u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCamera connection: M48×0.75 with built-in 2\" filter thread\u003c\/li\u003e\n  \u003cli\u003eStandard 55mm back focus is compatible with most imaging cameras and filter accessories\u003c\/li\u003e\n  \u003cli\u003eWorks as a guide scope or finder when mounted via finder base bracket (Vixen dovetail removed)\u003c\/li\u003e\n  \u003cli\u003eCompatible with ZWO ASIAIR, N.I.N.A., Ekos\/KStars, and other capture platforms via standard M48 connection\u003c\/li\u003e\n  \u003cli\u003eAF Kit available separately (Askar FMA180 Pro AF Kit — SKU: FMA180PRO-AF-KIT)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013819461743,"sku":"FMA180Pro","price":637.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FMA180__77144.png?v=1766563855"},{"product_id":"sharpstar-v-exchangeable-astrograph-system","title":"Askar V Modular APO Astrograph Telescope System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar V is a modular APO astrograph system built around two interchangeable objective lenses and three rear optical modules. Instead of being limited to one fixed focal length, the system can be configured as a 60mm or 80mm refractor and paired with the included reducer, flattener, or extender to suit different observing and imaging targets.\u003c\/p\u003e\u003cp\u003eThe V60 objective lens uses a triplet APO design with two ED elements and operates natively at 360mm f\/6. The V80 objective lens also uses a triplet APO design with two ED elements and operates natively at 500mm f\/6.25. With the reducer, flattener, and extender modules, the Askar V becomes a flexible wide-field to medium-field imaging platform for deep-sky astrophotography and high-quality visual use.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe Askar V is best for astronomers who want one portable refractor system that can cover multiple focal lengths. It is a strong option for beginner-to-intermediate imagers who want room to grow, advanced imagers who want a flexible travel setup, and visual observers who want a premium APO refractor system with more configuration options than a conventional single-purpose optical tube.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eModular system with both 60mm and 80mm APO objective lens options.\u003c\/li\u003e\n\u003cli\u003eIncludes reducer, flattener, and extender modules for multiple focal-length configurations.\u003c\/li\u003e\n\u003cli\u003eTriplet APO objective designs with two ED elements for improved colour correction.\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus on the rear optical accessories for common imaging setups.\u003c\/li\u003e\n\u003cli\u003eM54 and M48 camera-side adapters with a built-in 2-inch filter thread.\u003c\/li\u003e\n\u003cli\u003eIncludes 1.25-inch and 2-inch visual adapters for visual observing.\u003c\/li\u003e\n\u003cli\u003eUseful for wide-field nebulae, star fields, galaxies, lunar viewing, and portable imaging rigs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography with the reducer module.\u003c\/li\u003e\n\u003cli\u003eFlat-field imaging with the flattener module.\u003c\/li\u003e\n\u003cli\u003eLonger focal-length imaging or visual observing with the extender module.\u003c\/li\u003e\n\u003cli\u003eTravel astronomy setups where one optical system needs to cover multiple roles.\u003c\/li\u003e\n\u003cli\u003eVisual observing with the included 1.25-inch and 2-inch adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe rear accessories can be rotated to the correct 60mm or 80mm scale depending on whether the V60 or V80 objective lens is installed. The rear end of each accessory provides M54 and M48 adapter options, includes a built-in 2-inch filter thread, and uses a standard 55mm back focus for camera connection. The system also includes a 360-degree rotator, finder base, 1.25-inch and 2-inch visual adapters, and a multi-function handle that can accept a Vixen-style finder base and other accessories.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis is a modular system, so the user must select the correct objective lens and accessory scale for each setup.\u003c\/li\u003e\n\u003cli\u003eAstrophotography users still need correct 55mm spacing, camera adapters, a camera, and a suitable mount.\u003c\/li\u003e\n\u003cli\u003eThe reducer, flattener, and extender are not interchangeable with every telescope; they are intended for the Askar V system.\u003c\/li\u003e\n\u003cli\u003eIt is not the simplest option for someone who wants a single fixed-focal-length refractor with no setup decisions.\u003c\/li\u003e\n\u003cli\u003eFor serious planetary imaging, a longer focal length telescope may be a better choice.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the Askar V good for beginners?\u003c\/h3\u003e\u003cp\u003eYes, but it is best for beginners who are comfortable learning how optical configurations work. The system is flexible, but users must choose the correct lens and rear accessory combination.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used for flexible deep-sky astrophotography, portable imaging, wide-field targets, and visual observing with a high-quality APO refractor system.\u003c\/p\u003e\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\u003cp\u003eBoth. The Askar V supports astrophotography with reducer, flattener, and extender modules, and it also includes 1.25-inch and 2-inch visual adapters for observing.\u003c\/p\u003e\u003ch3\u003eWhat cameras or accessories can it connect to?\u003c\/h3\u003e\u003cp\u003eThe rear accessories provide M54 and M48 camera-side adapter options and use a standard 55mm back focus. The built-in 2-inch filter thread is useful for common mounted astronomy filters.\u003c\/p\u003e\u003ch3\u003eWhat makes it different from a regular refractor?\u003c\/h3\u003e\u003cp\u003eA regular refractor typically has one fixed aperture and focal length. The Askar V uses interchangeable objective lenses and rear optical modules, giving the user multiple focal-length and focal-ratio combinations in one system.\u003c\/p\u003e\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\u003cp\u003eDo not choose it if the customer wants the simplest possible fixed telescope, does not want to manage optical configurations, or primarily needs a long focal length planetary telescope.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Askar V for customers who want one premium, portable APO system that can handle multiple observing and imaging roles. It is especially attractive for imagers who like wide-field targets but also want the option to extend focal length when needed. Choose a simpler fixed refractor if you want fewer setup choices, or a larger\/longer telescope if your main goal is high-magnification planetary work.\u003c\/p\u003e\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\u003cp\u003eThe following vendor graphics show the Askar V system layout, configuration details, and optical report information.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/5b699f4f-73e3-4756-9541-ae4ab85b9c2d.jpg\" alt=\"Askar V modular APO astrograph system layout for V60 and V80 configurations\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/020d4523-d918-42b1-9cb9-736dedd8e27e.jpg\" alt=\"Askar V astrograph product configuration and accessory diagram\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4546ff99-a021-4a77-83f0-70edf7fab689.jpg\" alt=\"Askar V modular telescope optical configuration report graphic\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/4d64c202-6f6c-4390-9809-99f629a3540b.jpg\" alt=\"Askar V astrograph technical configuration chart\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/fe79dc27-4b93-46cf-8269-e7e51aff4507.jpg\" alt=\"Askar V optical performance report chart\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/9c335bac-8067-47f3-84c4-12fb3b362cec.jpg\" alt=\"Askar V optical report and spot diagram chart\"\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44013886996591,"sku":"ASK-V","price":2611.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/V1__38049.jpg?v=1766565549"},{"product_id":"askar-151phq-quadruplet-apo","title":"Askar 151PHQ Quadruplet APO","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is a premium 151mm f\/7 flatfield quadruplet APO astrograph designed for serious deep-sky imaging and high-end visual observing. With a 1057mm focal length, two ED glass elements, and a self-flattening optical design, it delivers a large corrected field without requiring a separate field flattener for native imaging.\u003c\/p\u003e\n\u003cp\u003eThe 151PHQ is the largest model in Askar’s PHQ series and is built for astrophotographers who want refractor contrast, large-aperture light gathering, and a 60mm image circle for modern large-sensor cameras. Its longer focal length makes it especially useful for galaxies, nebula details, star clusters, and high-resolution deep-sky targets where smaller wide-field refractors may not provide enough scale.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ is best for intermediate to advanced astrophotographers, observatory users, and experienced visual observers who have a mount capable of carrying a large refractor. It is a strong choice for users moving beyond small portable refractors and into a more serious imaging platform with a large corrected field and premium mechanical construction.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e151mm aperture provides strong light-gathering performance for deep-sky imaging.\u003c\/li\u003e\n  \u003cli\u003e1057mm focal length offers useful image scale for galaxies, nebula structure, clusters, and smaller targets.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 focal ratio balances optical correction, contrast, and long-focal-length performance.\u003c\/li\u003e\n  \u003cli\u003eQuadruplet air-spaced APO design includes two ED glass elements for excellent colour correction.\u003c\/li\u003e\n  \u003cli\u003eSelf-flattening design reduces the need for a separate field flattener in native imaging mode.\u003c\/li\u003e\n  \u003cli\u003e60mm image circle supports large imaging sensors, including full-frame and larger-format camera setups.\u003c\/li\u003e\n  \u003cli\u003e3.4-inch rack-and-pinion focuser includes M68, M54, and M48 adapter support, a 360-degree rotator, and a finder base.\u003c\/li\u003e\n  \u003cli\u003eOptional 3-inch 0.7x reducer can bring the system to approximately 740mm at f\/4.9 for faster imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-resolution deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eGalaxy and nebula detail imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame and larger-format astronomy camera setups\u003c\/li\u003e\n  \u003cli\u003ePermanent or semi-permanent observatory systems\u003c\/li\u003e\n  \u003cli\u003ePremium refractor-based visual observing\u003c\/li\u003e\n  \u003cli\u003eLonger focal length imaging where a small wide-field refractor is not enough\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe 151PHQ includes a 3.4-inch rack-and-pinion focuser with a 360-degree rotator, finder base, and rear adapter support for M68, M54, and M48 camera connections. The four-piece photographic adapter set steps the rear connection down to M48×0.75 and includes a built-in M48×0.75 filter thread. The optical system supports a 60mm image circle and is well suited to large sensors when paired with appropriate camera adapters.\u003c\/p\u003e\n\u003cp\u003eThe standard package includes the 151PHQ OTA, a pair of tube rings, a handle, an Askar 300mm Losmandy dovetail plate, a set of four photographic adapters, an aluminum case, and a manual. The optional 3-inch 0.7x flatfield reducer is not included, but can be used to reduce the system to approximately 740mm focal length at f\/4.9.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is a large refractor; the OTA weighs approximately 11.6kg, and the total weight with tube rings and dovetail is approximately 13.7kg.\u003c\/li\u003e\n  \u003cli\u003eA capable equatorial mount is required. This telescope is not appropriate for light travel mounts or entry-level mounts.\u003c\/li\u003e\n  \u003cli\u003eNative f\/7 imaging is excellent for image scale and correction, but exposure times will be longer than with faster astrographs unless the optional reducer is used.\u003c\/li\u003e\n  \u003cli\u003eThe 3-inch 0.7x reducer is optional and sold separately unless specifically bundled.\u003c\/li\u003e\n  \u003cli\u003eAlthough the native optical design is self-flattening, users still need the correct mechanical adapters, secure camera connection, and accurate focus for best results.\u003c\/li\u003e\n  \u003cli\u003eThis is not the best first telescope for a beginner unless they already have a suitable mount and imaging experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Askar 151PHQ good for beginners?\u003c\/h3\u003e\n\u003cp\u003eIt is not usually the best first astrophotography telescope. The optics are straightforward to use because the field is corrected natively, but the telescope is large and heavy and needs a capable mount, good balancing, and careful imaging setup.\u003c\/p\u003e\n\u003ch3\u003eWhat is the Askar 151PHQ best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for high-quality deep-sky astrophotography with large sensors, especially when you want more focal length than a compact wide-field refractor can provide.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eIt is primarily an astrograph for imaging, but it can also be used for premium visual observing with the appropriate accessories. Astrophotography is the main reason to choose the 151PHQ.\u003c\/p\u003e\n\u003ch3\u003eDoes it require a separate field flattener?\u003c\/h3\u003e\n\u003cp\u003eNo separate flattener is required for native imaging. The PHQ optical design is self-flattening, which simplifies setup compared with refractors that require a dedicated flattener and strict flattener spacing.\u003c\/p\u003e\n\u003ch3\u003eWhat cameras is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe 60mm image circle makes it suitable for full-frame astronomy cameras and larger-format imaging setups, provided the correct mechanical adapters and spacing are used for the camera system.\u003c\/p\u003e\n\u003ch3\u003eCan it be made faster for imaging?\u003c\/h3\u003e\n\u003cp\u003eYes. The optional 3-inch 0.7x flatfield reducer can reduce the system to approximately 740mm focal length at f\/4.9, which shortens exposure time and provides a wider field of view.\u003c\/p\u003e\n\u003ch3\u003eWhat kind of mount does it need?\u003c\/h3\u003e\n\u003cp\u003eBecause the complete setup with tube rings and dovetail is approximately 13.7kg before adding a camera, guide scope, focuser, and accessories, it should be paired with a mount that has a comfortable imaging payload margin.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not recommend this telescope for lightweight travel rigs, very small mounts, casual grab-and-go observing, or beginners who do not yet have a suitable equatorial mount and imaging workflow.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 151PHQ for astrophotographers who want a premium large-aperture refractor with a long native focal length, flat imaging field, and large sensor support. It solves the problem of getting refractor-quality deep-sky images without adding a separate native field flattener. Choose a smaller PHQ or SQA model if portability, beginner friendliness, or a lighter mount requirement is more important.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied graphics help show the 151PHQ optical and mechanical layout, native imaging configuration, adapter arrangement, and field performance.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\" alt=\"Askar 151PHQ optical layout and mechanical diagram for large-format astrophotography\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/307bc671-7fa9-46c6-b166-de2be86ef2b9.jpg\" alt=\"Askar 151PHQ telescope body and adapter diagram for imaging setup\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b9152fea-5a54-4b65-beaf-6cfc05717813.jpg\" alt=\"Askar 151PHQ rear connection and accessory diagram for camera adapters\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/28082a52-4b55-4374-8169-9ff7b600ac92.jpg\" alt=\"Askar 151PHQ spot diagram and optical performance chart for deep-sky imaging\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014107656303,"sku":"151PHQ","price":6298.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/151phq__21433.png?v=1766571519"},{"product_id":"askar-130phq","title":"Askar 130PHQ","description":"\u003cp class=\"e_text-8 s_title response-transition\"\u003e130PHQ is a long-focal-ratio, flatfield astrograph newly launched after 107PHQ. Instead of buying extra flatteners, calculating the backfocus of flattener or making tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging. 130PHQ has a larger size than 107PHQ, with an aperture 23mm larger than 107PHQ. 130PHQ has a focal ratio of f\/7.7 which is longer than 107PHQ’ s f\/7, and a focal length of 1000mm. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 130PHQ offers strong advantages in astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-15 p_loopItem\"\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003cdiv id=\"ce_detail-275107\" class=\"ce_detail\" data-layout=\"flow\"\u003e\n\u003cdiv id=\"ie_grid-1667527470979\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv id=\"content_ie-1667527470979-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\"\u003e\n\u003cdiv id=\"ie_grid-1667527470984\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1667527470984-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_text-1669603692344\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e130PHQ comes with a telescopic lens hood, a high quality CNC machined and painted tube and attractive decorative parts. The 3.4\" rigid focuser comes with M68, M54, and M48 adapters and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/5.4 and a focal length of 700mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. Standard Losmandy dovetail plate, together with sturdy double tube ring, is perfectly suited for viewing and shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1669603845703\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/93f71e7e-3059-44f2-b166-12284032d9b9.jpg\" alt=\"长友气体\" width=\"100%\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/142b5de7-81b4-4e96-bfdb-f3cdead5f762.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-15 p_loopItem\"\u003e \u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014112407663,"sku":"130PHQ","price":5074.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/PHQ130-a__97306.png?v=1766571673"},{"product_id":"71f-flat-field","title":"Askar 71F 71mm f\/6.9 Flat-Field APO Astrograph","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAskar 71F Flat-Field APO Astrograph\u003c\/strong\u003e is a lightweight, compact 71mm quadruplet refractor designed for both astrophotography and visual observing. With a 490mm focal length and native f\/6.9 focal ratio, it offers a practical balance of portability, reach, and corrected imaging performance.\u003c\/p\u003e\u003cp\u003eThe 71F uses a quadruplet air-spaced APO optical design with one ED glass element. Its self-flattened design supports a 44mm full-frame image circle, allowing imagers to use the telescope without purchasing a separate field flattener or calculating traditional backfocus spacing before imaging.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWho Is This Product Best For?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThis telescope is best for astrophotographers who want a portable, corrected refractor for wide-field deep-sky imaging, as well as visual observers who want a compact APO refractor that can also serve as an imaging OTA.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Choose This Product?\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-flattened optical design:\u003c\/strong\u003e The 71F does not require a separate field flattener for standard imaging use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame ready:\u003c\/strong\u003e The 44mm image circle supports full-frame imaging sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuadruplet APO optics:\u003c\/strong\u003e The air-spaced quadruplet design includes one ED glass element to help control chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable build:\u003c\/strong\u003e The OTA weighs only 2.5kg, with a 3.0kg gross weight including the tube rings and dovetail plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-friendly mechanics:\u003c\/strong\u003e Includes a 2.4\" dual-speed rack-and-pinion focuser, 1:10 fine adjustment, and a 360° rear rotator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible connection options:\u003c\/strong\u003e The photographic adapter system includes M48×0.75 and M54×0.75 connections with a built-in 2\" filter thread.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eFull-frame imaging setups\u003c\/li\u003e\n\u003cli\u003ePortable refractor imaging rigs\u003c\/li\u003e\n\u003cli\u003eVisual observing with compatible eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003eTravel-friendly astronomy setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Askar 71F includes a set of photographic adapters, a pair of tube rings, a handle, and a 230mm Vixen-style dovetail plate. The dovetail plate includes slotted 1\/4\" and 3\/8\" screw holes for direct tripod attachment. The focuser provides M64×0.75, M54×0.75, and M48×0.75 rear-end connection options depending on the adapter configuration.\u003c\/p\u003e\u003cp\u003eThe telescope also includes multiple finder mounting options, with a finder slot on the handle and two finder bases on the focuser body. Sharpstar\/Askar also shows optional EAF installation support on the product page.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eTechnical Diagrams\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe following Sharpstar\/Askar technical diagrams are included for setup planning, mechanical spacing, accessory connection, and imaging performance reference.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8fea8184-f19b-4167-8000-5f6b82ffbc68.jpg\" alt=\"Askar 71F product size diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003e71F Connection Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c4e96a62-154d-46ae-9c4c-c056597265dc.jpg\" alt=\"Askar 71F connection diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eLocking Screw Position Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fb7489d3-de4a-4c26-bcae-55a86166d738.jpg\" alt=\"Askar 71F locking screw position diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eEAF Installation Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6a4a88e7-e8b7-494c-b196-f987f67b375a.jpg\" alt=\"Askar 71F optional EAF installation diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/bbb48223-3f1a-4483-a38f-d799c720a9e6.jpg\" alt=\"Askar 71F EAF installation detail diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eOptical Path Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/41058961-83a2-4a2d-a246-9f289d69c42b.jpg\" alt=\"Askar 71F optical path diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eSpot Diagram\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a91f2077-d8ca-4b0c-a2e2-fb08ce115b2b.jpg\" alt=\"Askar 71F spot diagram\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eImportant Limitations\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a fast reducer setup by default:\u003c\/strong\u003e The native focal ratio is f\/6.9. A reducer, if desired, is a separate accessory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging train planning still matters:\u003c\/strong\u003e The telescope is self-flattened, but users still need the correct mechanical adapters, camera spacing within the available focuser travel, and sufficient focus travel for their setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount capacity matters:\u003c\/strong\u003e The OTA is compact, but total system weight increases with camera, guide scope, filter wheel, focuser motor, and other accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h2\u003e\u003ch3\u003e\u003cstrong\u003eDoes the Askar 71F need a separate field flattener?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eNo. The 71F is designed as a self-flattened astrograph, so a separate flattener is not required for standard imaging use.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCan the Askar 71F cover a full-frame camera?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eYes. Sharpstar\/Askar lists a 44mm image circle, which is suitable for full-frame imaging.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is the focal length?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe native focal length is 490mm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat focuser does it use?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe 71F uses a 2.4\" dual-speed rack-and-pinion focuser with 1:10 fine adjustment and a 360° rear rotator.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat is included in the standard package?\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe listed standard package includes the 71F OTA, tube rings, handle, 230mm Vixen dovetail plate, and photographic adapters.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eOur Recommendation\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the Askar 71F for imagers who want a compact, full-frame-capable refractor with built-in field correction and no separate flattener requirement. It is a strong choice for portable deep-sky imaging setups where simplicity, corrected optics, and manageable weight are priorities.\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44014120206447,"sku":"71F","price":939.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/71Fa__59523.png?v=1766572032"},{"product_id":"askar-131f-flat-field-quadruplet-astrograph","title":"Askar 131F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 131F Flat-Field Quadruplet Astrograph — 131mm f\/7.5\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 131F Flat-Field\u003c\/strong\u003e is a premium 131mm aperture quadruplet APO astrograph designed for serious deep-sky astrophotographers and visual observers who want a large-aperture, plug-and-shoot instrument with no compromises. Built around a self-flattening quadruplet optical design — three elements at the front, one correcting element at the rear — the 131F delivers a flat, fully corrected image circle of 44mm, covering full-frame sensors without the need for a separate field flattener.\u003c\/p\u003e\n\n\u003cp\u003eWith a 983mm focal length at f\/7.5, the 131F occupies an ideal position for wide-field deep-sky imaging: enough aperture to collect serious light on faint nebulae and galaxies, and a focal ratio that keeps exposure times manageable. One piece of ED (extra-low dispersion) glass in the optical group keeps chromatic aberration tightly controlled across the full field.\u003c\/p\u003e\n\n\u003cp\u003eTrue to the Askar F Series philosophy, backfocus calculation is completely eliminated. Simply attach your camera adapter, achieve focus, and begin imaging — no spacer math, no flattener purchase required. The included photographic extension tube features a built-in 2-inch filter thread and ships with both M48×0.75 and M54×0.75 adapter options, covering a wide range of DSLR and dedicated astronomy cameras.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package is equally well considered: a precision 3-inch rack-and-pinion focuser with 1:10 fine-focus adjustment, a built-in 360° camera rotator, a retractable dew shield, two finder scope bases, and a 300mm Losmandy-style dovetail plate — all finished in the iconic Askar blue-and-white CNC-machined tube body.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate and advanced astrophotographers\u003c\/strong\u003e who want to step up to a large-aperture, full-frame-capable astrograph without the complexity of external flatteners or backfocus calculations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting nebulae, galaxy clusters, and large emission regions who want both resolution and field width in a single instrument.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-scope-for-everything users\u003c\/strong\u003e — the 131F performs equally well for visual observing with standard 1.25\" and 2\" eyepieces, making it genuinely dual-purpose.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImagers who use full-frame cameras\u003c\/strong\u003e — the 44mm image circle fully covers Sony, Nikon, and Canon full-frame sensors as well as large dedicated astronomy sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eObservers who prefer a clean, streamlined workflow\u003c\/strong\u003e — the self-flattening design removes setup variables and lets you focus on the sky.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 131F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet design\u003c\/strong\u003e — no separate field flattener to buy, no backfocus distance to calculate. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame sensor coverage\u003c\/strong\u003e — the 44mm image circle covers all modern full-frame DSLR and mirrorless sensors as well as large-format dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — a single ED element in the quadruplet group suppresses false colour across the entire image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° camera rotator\u003c\/strong\u003e — frame your target at any angle without repositioning the entire telescope.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 3\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — large-format, low-flex focuser suited to heavy camera payloads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose: imaging and visual\u003c\/strong\u003e — the included 1.25\"\/2\" visual adapter makes the 131F a capable visual telescope alongside its imaging role.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive standard package\u003c\/strong\u003e — tube rings, handle, 300mm Losmandy dovetail plate, and photographic adapter set are all included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — practical field protection without adding to transport length.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, galaxy groups, star-forming regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR and mirrorless astrophotography\u003c\/li\u003e\n  \u003cli\u003eDedicated astronomy camera imaging (mono and colour sensors)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging (2\" filter thread built-in)\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eDual-rig or multi-telescope observatory setups\u003c\/li\u003e\n  \u003cli\u003eAstrophotography club and outreach use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera compatibility:\u003c\/strong\u003e The 131F ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users will need their camera's standard T-ring. Dedicated astronomy camera users with M42, M54, or M48 connections are directly supported. The built-in 2-inch filter thread on the extension tube accepts standard 2\" astronomy filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The included 300mm Losmandy-style dovetail plate is compatible with any mount that accepts a standard Losmandy D-plate saddle. At 7.9kg (OTA) and 9.4kg gross, a robust equatorial mount — such as a Sky-Watcher EQ6-R, iOptron CEM70, or equivalent — is recommended for imaging use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 131F 0.74× reducer is available separately to bring the system to approximately f\/5.6 for faster imaging. Electronic focuser motor adapters are compatible with the 3\" focuser for remote or automated focus control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGuiding:\u003c\/strong\u003e Two built-in finder bases allow a guide scope to be mounted directly on the tube. Dedicated guide scopes such as the Askar 52mm guide scope series are compatible.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight requires a capable mount\u003c\/strong\u003e — at 9.4kg with rings and dovetail, this telescope needs a mid- to heavy-duty equatorial mount. It is not suited to lightweight travel mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/7.5 is not ultrafast\u003c\/strong\u003e — for very faint targets in light-polluted skies, the optional 0.74× reducer (sold separately) is recommended to achieve f\/5.6 for shorter exposures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary or lunar imaging\u003c\/strong\u003e — the 983mm focal length and f\/7.5 ratio are optimized for wide-field deep sky; high-power planetary work benefits from longer focal lengths.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge instrument\u003c\/strong\u003e — at up to 1026mm total length with the dew shield extended, this is a full-size observatory-class refractor. Travel and portability should be considered.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — the focuser is manual; an electronic focuser motor is available separately if motorized focus control is desired.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener with the Askar 131F?\u003c\/strong\u003e\u003cbr\u003e\nNo. The self-flattening quadruplet design produces a flat field natively. No separate flattener purchase is required, and no backfocus distance calculation is needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover a full-frame sensor?\u003c\/strong\u003e\u003cbr\u003e\nYes. The 44mm image circle fully covers all current full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it suitable for beginners?\u003c\/strong\u003e\u003cbr\u003e\nThe 131F is best suited to intermediate or advanced users who already have a capable equatorial mount and some experience with astrophotography. The self-flattening design does remove significant complexity, but the telescope's size, weight, and price point are more appropriate for experienced observers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat camera connections does it support?\u003c\/strong\u003e\u003cbr\u003e\nThe standard adapters cover M48×0.75 and M54×0.75 connections. DSLR users need a standard camera T-ring. Most dedicated astronomy cameras (ZWO, QHY, Player One, etc.) with M54 or M48 connections attach directly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003e\nYes. The included 1.25\"\/2\" visual adapter lets you use standard eyepieces. The 131mm aperture and 983mm focal length provide excellent wide-field visual views of open clusters, nebulae, and galaxies.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003e\nA mount rated for at least 12–15kg of payload is recommended for imaging. Examples: Sky-Watcher EQ6-R Pro, iOptron CEM70, Rainbow RST-135, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003e\nYes. The Askar 131F 0.74× reducer (sold separately) reduces the focal ratio to approximately f\/5.6, enabling faster exposures and a wider field of view.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat makes it different from similarly priced astrographs?\u003c\/strong\u003e\u003cbr\u003e\nThe self-flattening quadruplet design is the key differentiator — you get a flat field across a 44mm image circle without buying or collimating an additional flattener. The built-in 360° rotator, 3\" focuser, and full accessory package also add significant real-world value over comparable bare OTAs.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 131F Flat-Field\u003c\/strong\u003e for astrophotographers who are ready to step up to a large-aperture, full-frame-ready instrument and want the simplest possible imaging workflow. The self-flattening design is genuinely useful — it eliminates an entire category of compatibility and spacing problems that trip up even experienced imagers. Paired with a capable equatorial mount and a modern astronomy camera, the 131F is an exceptionally capable deep-sky imaging system.\u003c\/p\u003e\n\n\u003cp\u003eIf you are a beginner, a lighter and simpler telescope will serve you better while you develop your technique. If you primarily image planets or the Moon, a longer focal length instrument is a better match. But if wide-field deep-sky imaging on full-frame sensors is your goal, the Askar 131F is one of the most complete, ready-to-image packages available at this aperture class.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 131F's optical performance data, mechanical dimensions, connection specifications, and assembly details before purchasing or setting up the instrument.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8a883eef-96d8-4147-a206-fe1420dd4855.jpg\" alt=\"Askar 131F Product Size Diagram - mechanical dimensions and tube length measurements\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a9e9b79d-844c-4873-9502-9cc87b6f3bf8.jpg\" alt=\"Askar 131F Product Size Diagram - additional mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/dbaae082-9703-4ccc-a319-b6dedcb3e3d8.jpg\" alt=\"Askar 131F Connection Diagram - photographic adapter and camera connection threading specifications\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 131F Locking Screw Position Diagram - focuser and adapter locking screw locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 131F Electronic Focuser Assembly Diagram - motorized focuser motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e9cb86dc-bee7-488c-89ef-47160eaf5769.jpg\" alt=\"Askar 131F Optical Path Diagram - quadruplet lens group layout and light path illustration\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/96389167-369e-4ff4-bbd2-43768e5ac17d.jpg\" alt=\"Askar 131F Spot Diagram - optical star spot performance across full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154388476015,"sku":"131F-FLAT-FIELD","price":2798.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1114d666-31b5-46c4-85c4-3c57ff6d48e7.png?v=1779666429"},{"product_id":"askar-111f-flat-field-quadruplet-astrograph","title":"Askar 111F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 111F Flat-Field Quadruplet Astrograph — 111mm f\/6.9\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 111F Flat-Field\u003c\/strong\u003e is a 111mm aperture, 766mm focal length quadruplet APO astrograph built around Askar's proven self-flattening design philosophy. At a native f\/6.9 focal ratio, it sits between the compact 91F and the larger 131F in the F Series lineup — offering meaningful aperture and a relatively fast ratio in a package that tops out under 6kg with rings and dovetail, making it compatible with a wider range of equatorial mounts than its larger sibling.\u003c\/p\u003e\n\n\u003cp\u003eThe optical design uses four air-spaced elements — three in the front group and one correcting element in the rear — with one piece of ED glass to manage chromatic aberration across the full field. An internal baffle in the tube body further reduces stray light, and the system natively supports a 44mm image circle covering full-frame sensors. Like all F Series telescopes, it requires no separate field flattener and no backfocus calculation: connect your camera, achieve focus, and begin imaging.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package is comprehensive: a 3\" rack-and-pinion focuser with 1:10 fine adjustment, a built-in 360° camera rotator, a retractable dew shield, two finder scope bases on the tube plus one on the handle, and a 300mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod screw holes. The tube body is precision CNC-machined in the signature Askar blue-and-white finish.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate astrophotographers\u003c\/strong\u003e stepping up from a smaller instrument who want full-frame sensor coverage with no flattener complexity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting nebulae, galaxy groups, and emission regions where 111mm of aperture provides meaningful light collection advantage over sub-100mm instruments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount-limited users\u003c\/strong\u003e who want more aperture than the 91F but need to stay within the payload range of mounts like the Sky-Watcher HEQ5, iOptron CEM40, or equivalent.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e who want both astrophotography and visual observing capability in one instrument, since the 111F accepts standard 1.25\" and 2\" eyepieces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBudget-conscious upgraders\u003c\/strong\u003e who want a large-image-circle full-frame astrograph at a lower price point than the 131F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 111F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no additional flattener needed, no backfocus distance to calculate. Attach your camera and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers full-frame DSLR, mirrorless, and large dedicated astronomy camera sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element in the quadruplet group suppresses false colour across the entire image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° camera rotator\u003c\/strong\u003e — frame your target at any angle without moving the telescope.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — large-format, low-flex focuser with fine control protective cap.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple finder base positions\u003c\/strong\u003e — finder scope can be repositioned between handle slot and focuser-side bases without disassembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLighter than the 131F\u003c\/strong\u003e — at 6.76kg gross (with rings and Vixen dovetail), compatible with a broader range of imaging mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2\" filter thread built-in\u003c\/strong\u003e — the photographic extension tube accepts standard 2-inch astronomy filters directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, galaxy clusters, emission regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR and mirrorless astrophotography\u003c\/li\u003e\n  \u003cli\u003eDedicated astronomy camera imaging (ZWO, QHY, Player One, Touptek, etc.)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eModerate-payload equatorial mount imaging setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users need a standard camera T-ring. The built-in 2\" filter thread on the extension tube accepts standard astronomy filters. Most dedicated astronomy cameras with M54 or M48 nose threads connect directly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 300mm Vixen-style dovetail plate fits any Vixen-compatible saddle. The 1\/4\" and 3\/8\" holes allow direct tripod mounting. At 6.76kg gross, mounts rated for 10–12kg imaging payload are appropriate — such as the Sky-Watcher HEQ5 Pro, iOptron CEM40, ZWO AM5, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 111F 0.74× Reducer (sold separately) drops the system to approximately f\/5.1 (566mm focal length) for wider-field, faster imaging. An electronic focuser motor is available separately for remote focus control.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGuiding:\u003c\/strong\u003e Two finder bases on the focuser body plus the handle slot provide three guide scope mounting positions. Compatible with Askar 52mm guide scope series and other standard guide scopes.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/6.9 is not ultrafast\u003c\/strong\u003e — for very faint targets in light-polluted skies, the optional 0.74× reducer (sold separately) is recommended.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary or lunar imaging\u003c\/strong\u003e — optimized for wide-field deep sky, not high-magnification planetary detail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased focuser motor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot a beginner instrument\u003c\/strong\u003e — most appropriate for users with an equatorial mount and some astrophotography experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a field flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet design produces a flat field natively across the 44mm image circle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle covers all current full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eA mount rated for 10–12kg payload is recommended for imaging. Examples: Sky-Watcher HEQ5 Pro, iOptron CEM40, ZWO AM5N, or equivalent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the 111F compare to the 91F?\u003c\/strong\u003e\u003cbr\u003eThe 111F has 22% more aperture (111mm vs 91mm), a slightly faster native ratio (f\/6.9 vs f\/6.7), and a longer 766mm focal length vs 609mm. It is heavier (5.74kg net vs 3.92kg) and does not include eyepieces or an erecting prism in the standard package. The 91F is better for users with smaller mounts or who want a more complete visual\/travel kit out of the box.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does the 111F compare to the 131F?\u003c\/strong\u003e\u003cbr\u003eThe 131F has more aperture (131mm) and a longer focal length (983mm) but is significantly heavier (7.9kg net) and requires a heavier-duty mount. The 111F is the better choice for users with mid-weight mounts who still want full-frame coverage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 111F 0.74× Reducer (sold separately) reduces the system to f\/5.1 and 566mm focal length.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 111F Flat-Field\u003c\/strong\u003e for astrophotographers who want a meaningful aperture upgrade over a 60–91mm instrument while keeping the system weight manageable for mid-range equatorial mounts. The self-flattening design eliminates the most common source of setup complexity for newer imagers, and the full-frame image circle means the optics will not limit you as your camera equipment evolves. It is a strong all-round deep-sky imaging platform at a competitive price point in the 100–120mm aperture class.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following diagrams are provided for customers who wish to review the optical performance data, mechanical dimensions, and connection specifications of the Askar 111F before purchasing or setting up the instrument.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/454295a5-664d-43a2-9b8e-1b65a715a593.jpg\" alt=\"Askar 111F Product Size Diagram - tube length and mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/39e3d53e-59fa-4ba9-bb6a-d46e147a0f0b.jpg\" alt=\"Askar 111F Product Size Diagram - additional dimension reference\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d77cda7c-afa8-4052-9c88-e7ad4d7a8ac1.jpg\" alt=\"Askar 111F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 111F Locking Screw Position Diagram - focuser and adapter lock locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 111F Electronic Focuser Assembly Diagram - motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d7da6964-5f63-4a1b-add1-645d41eba620.jpg\" alt=\"Askar 111F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d3529dd7-ba1a-4553-af4b-787d4e747dc3.jpg\" alt=\"Askar 111F Spot Diagram - star spot performance across full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154393686127,"sku":"111F-FLAT-FIELD","price":2098.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ee178691-b536-4f04-81d1-9acd6a365330.png?v=1779667136"},{"product_id":"askar-91f-flat-field-quadruplet-astrograph","title":"Askar 91F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 91F Flat-Field Quadruplet Astrograph — 91mm f\/6.7\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 91F Flat-Field\u003c\/strong\u003e is a 91mm aperture, 609mm focal length quadruplet APO astrograph and the most accessible telescope in the Askar F Series. At a native f\/6.7 focal ratio, it combines a compact and lightweight build — just 3.92kg OTA — with the same self-flattening, full-frame-capable optical performance that defines the entire F Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe four-element optical design (three front elements, one rear correcting element) includes one piece of ED glass to suppress chromatic aberration. The system natively supports a 44mm image circle covering full-frame sensors with no external flattener required and no backfocus calculation needed. Simply attach your camera, achieve focus, and begin imaging.\u003c\/p\u003e\n\n\u003cp\u003eThe 91F is the most complete package in the F Series out of the box: in addition to the standard photographic extension tube with M48×0.75 and M54×0.75 adapters, it ships with an 8mm eyepiece (76×), a 20mm eyepiece (30×), and a 1.25\" 45° erecting prism — making it immediately ready for visual observing, birdwatching, and terrestrial use the moment it arrives.\u003c\/p\u003e\n\n\u003cp\u003eThe mechanical package includes a 3\" R\u0026amp;P focuser with 1:10 fine adjustment, a 360° camera rotator, a retractable dew shield, a matting-felt-lined tube interior, two finder bases on the focuser plus a handle slot, and a 230mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod holes. The exterior features the signature Askar blue-and-white CNC-machined finish.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner to intermediate astrophotographers\u003c\/strong\u003e who want a full-frame-capable, self-flattening instrument with no setup complexity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable rig users\u003c\/strong\u003e — at 3.92kg OTA and a maximum length under 640mm with dew shield extended, it pairs well with compact travel mounts like the ZWO AM5, iOptron HEM27, Sky-Watcher Star Adventurer GTi, and similar.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose visual and imaging users\u003c\/strong\u003e — the included eyepiece and erecting prism kit makes it ready for daytime spotting and nighttime visual observing right out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBirders and nature observers\u003c\/strong\u003e looking for a versatile, optically excellent spotting scope that doubles as an astrograph.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers on smaller mounts\u003c\/strong\u003e who need a flat-field full-frame instrument within a tight weight budget.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 91F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no separate flattener, no backfocus calculation. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightest F Series telescope\u003c\/strong\u003e — at 3.92kg OTA (4.52kg gross), suitable for the widest range of mounts including travel-grade systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMost complete standard package\u003c\/strong\u003e — the 91F includes 8mm and 20mm eyepieces plus a 1.25\" erecting prism, unlike the larger F Series models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element minimizes false colour across the full image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° rotator\u003c\/strong\u003e — frame targets at any angle without repositioning the mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatting felt interior\u003c\/strong\u003e — stray light absorption lining inside the tube for better contrast.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — compact for transport, extended for use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTripod-mountable dovetail\u003c\/strong\u003e — 230mm Vixen plate with 1\/4\" and 3\/8\" screw holes for direct tripod use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, star clusters, large emission regions)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging (built-in 2\" filter thread)\u003c\/li\u003e\n  \u003cli\u003eVisual deep-sky observing with included 8mm and 20mm eyepieces\u003c\/li\u003e\n  \u003cli\u003eBirdwatching, wildlife, and terrestrial spotting\u003c\/li\u003e\n  \u003cli\u003eTravel and portable mount setups\u003c\/li\u003e\n  \u003cli\u003eBeginner astrophotography and astronomy outreach\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 adapters. DSLR users need a standard T-ring. Dedicated astronomy cameras with M54 or M48 connections attach directly. Built-in 2\" filter thread on the extension tube accepts standard astronomy filters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 230mm Vixen dovetail fits any Vixen-compatible saddle. The 1\/4\" and 3\/8\" tripod holes allow direct tripod mounting without a mount at all. At 4.52kg gross, compatible with lightweight mounts including ZWO AM5, iOptron HEM27, Sky-Watcher HEQ5, Star Adventurer GTi, and similar. A mount rated for at least 6–8kg payload is recommended for imaging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 91F 0.75× Reducer (sold separately) brings the system to f\/5 and 455mm focal length for wider-field, faster imaging. An electronic focuser motor is available separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIncluded visual accessories:\u003c\/strong\u003e 8mm eyepiece (76× magnification), 20mm eyepiece (30× magnification), and 1.25\" 45° erecting prism for correct-image terrestrial and astronomical viewing.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmaller aperture than 111F\/131F\u003c\/strong\u003e — 91mm collects less light than larger F Series instruments; exposures will be longer on faint targets. Consider the optional 0.75× reducer or a larger telescope for very faint, small-scale objects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ef\/6.7 is moderate speed\u003c\/strong\u003e — not ultrafast; the optional 0.75× reducer (sold separately) brings it to f\/5 for shorter exposures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot ideal for planetary imaging\u003c\/strong\u003e — the 609mm focal length is optimized for wide-field deep sky, not high-magnification planetary detail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased motor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet produces a flat field across the 44mm image circle natively.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle fully covers all current full-frame DSLR, mirrorless, and dedicated astronomy cameras.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it good for beginners?\u003c\/strong\u003e\u003cbr\u003eYes — it is the most beginner-friendly instrument in the F Series. The included eyepieces and erecting prism mean it can be used for visual observing immediately, and the self-flattening design removes the most common astrophotography setup hurdle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eFor imaging, a mount rated for at least 6–8kg payload is recommended. For visual use only, it can be used on a camera tripod via the built-in tripod screw holes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 91F 0.75× Reducer (sold separately) reduces the system to f\/5 and 455mm focal length.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the 111F?\u003c\/strong\u003e\u003cbr\u003eThe 91F is lighter (3.92kg vs 5.74kg), shorter, includes eyepieces and an erecting prism, and is better suited for smaller mounts and travel. The 111F has more aperture and a longer focal length for more resolution on smaller targets.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use it for birdwatching?\u003c\/strong\u003e\u003cbr\u003eYes. The included 20mm eyepiece and erecting prism give a correct-image view for terrestrial spotting. It functions as an excellent spotting scope in addition to its astronomy role.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 91F Flat-Field\u003c\/strong\u003e as the best entry point into the F Series for most buyers. It is the lightest, most portable, and most complete package — ready for visual observing, birdwatching, and astrophotography the moment it arrives. If you are using a compact or travel mount, or you want one instrument that handles astronomy and daytime optics equally well, the 91F is an outstanding choice.\u003c\/p\u003e\n\n\u003cp\u003eIf you need more aperture for fainter targets or higher resolution and have a heavier mount, consider the 111F or 131F. But for first-time F Series buyers and travel users, the 91F delivers the full F Series experience in the most accessible package.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 91F’s optical performance, mechanical dimensions, and connection specifications.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6d3433e9-069f-4e8f-8fe5-f64659c95b6e.jpg\" alt=\"Askar 91F Product Size Diagram - tube length and mechanical dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d8b7fe34-d5d0-4555-bbc9-ead405dfacf2.jpg\" alt=\"Askar 91F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\" alt=\"Askar 91F Locking Screw Position Diagram - focuser and adapter lock locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\" alt=\"Askar 91F Electronic Focuser Assembly Diagram - motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fabf66d1-bbc7-47d2-95d9-13cbfcf8d59e.jpg\" alt=\"Askar 91F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/9204b293-5dea-45bd-a45d-91db45661241.jpg\" alt=\"Askar 91F Spot Diagram - star spot performance across the full-frame image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154396504175,"sku":"91F-FLAT-FIELD","price":1398.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4a0aa511-087e-46a0-897a-b099e77a876e.png_560xaf.webp?v=1779668266"},{"product_id":"askar-60f-flat-field-quadruplet-astrograph","title":"Askar 60F Flat-Field Quadruplet Astrograph","description":"\u003ch2\u003eAskar 60F Flat-Field Quadruplet Astrograph — 60mm f\/6.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar 60F Flat-Field\u003c\/strong\u003e is the most compact and portable telescope in the Askar F Series — a 60mm aperture, 408mm focal length quadruplet APO astrograph that weighs just 2.36kg and measures as little as 289mm in total length with the dew shield retracted. Despite its small footprint, it delivers the same self-flattening full-frame performance that defines the entire F Series: a 44mm image circle covering full-frame sensors, no separate flattener required, and no backfocus calculation needed.\u003c\/p\u003e\n\n\u003cp\u003eThe quadruplet optical design (three front elements, one rear correcting element) includes one piece of ED glass to control chromatic aberration. A 2.4\" rack-and-pinion focuser with 1:10 fine adjustment and a 360° rotator handles the imaging side. The matting-felt-lined tube interior reduces stray light, and the signature Askar blue-and-white CNC finish keeps the aesthetic consistent with the rest of the F Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe 60F ships with a photographic extension tube featuring a built-in 2\" filter thread and M48×0.75 and M54×0.75 adapters, a 230mm Vixen-style dovetail plate with 1\/4\" and 3\/8\" tripod screw holes (for direct tripod mounting without any mount), tube rings, and a handle. Two finder base positions on the focuser body plus the handle slot provide three guide scope or accessory mounting positions.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable rig astrophotographers\u003c\/strong\u003e who need a full-featured, full-frame-capable astrograph in the smallest and lightest possible package.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner to intermediate astrophotographers\u003c\/strong\u003e who want to start with a self-flattening instrument and remove the complexity of external flatteners from day one.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhotographers using ultralight mounts\u003c\/strong\u003e such as the ZWO AM5, iOptron HEM27, Sky-Watcher Star Adventurer GTi, or any mount where weight is a critical constraint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e wanting a compact refractor for wide-field visual observing with standard 1.25\" and 2\" eyepieces, as well as astrophotography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on a budget\u003c\/strong\u003e who want the F Series self-flattening design at the most accessible price point in the lineup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar 60F?\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmallest F Series astrograph\u003c\/strong\u003e — 289mm body length with dew shield retracted and 2.36kg OTA weight; the most portable full-frame-capable astrograph in the Askar lineup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-flattening quadruplet\u003c\/strong\u003e — no separate flattener needed, no backfocus calculation. Attach and shoot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e44mm full-frame image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy camera sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eED glass chromatic control\u003c\/strong\u003e — one ED element in the quadruplet group suppresses false colour across the full image field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in 360° rotator\u003c\/strong\u003e — frame targets at any angle without repositioning the mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4\" R\u0026amp;P focuser with 1:10 fine adjustment\u003c\/strong\u003e — rigid, low-flex focuser with anti-slip fine adjustment cover.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect tripod mounting\u003c\/strong\u003e — the 230mm Vixen dovetail includes 1\/4\" and 3\/8\" screw holes so the 60F can be used on a camera tripod with no equatorial mount.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMatting felt tube interior\u003c\/strong\u003e — stray light absorption lining for better contrast.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRetractable dew shield\u003c\/strong\u003e — compact for transport; extends for field use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTravel and portable astrophotography on ultralight mounts\u003c\/li\u003e\n  \u003cli\u003eWide-field deep-sky imaging (large nebulae, star clusters, Milky Way fields)\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eWide-field visual observing with 1.25\" and 2\" eyepieces\u003c\/li\u003e\n  \u003cli\u003eBeginner and entry-level astrophotography\u003c\/li\u003e\n  \u003cli\u003eTripod-mounted solar system observing with appropriate solar filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e Ships with M48×0.75 and M54×0.75 photographic adapters. DSLR users need a standard T-ring. Dedicated astronomy cameras with M54 or M48 nose threads connect directly. The built-in 2\" filter thread accepts standard astronomy filters. Note: the 60F uses M64×0.75 as the primary rear-end thread (vs M64×1 on the 91F), so verify adapter compatibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMount compatibility:\u003c\/strong\u003e The 230mm Vixen dovetail fits any Vixen-compatible saddle. The built-in 1\/4\" and 3\/8\" screw holes allow direct tripod use. At 2.86kg gross, compatible with the full range of ultralight mounts — a mount rated for at least 4–6kg payload is recommended for imaging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e The Askar 60F 0.75× Reducer (sold separately) reduces the system to f\/5.1 and 311mm focal length for an even wider field and faster exposures. An electronic focuser motor is available separately for remote focus control.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmaller aperture than other F Series models\u003c\/strong\u003e — 60mm collects significantly less light than the 91F or larger models. Exposures will be longer on faint targets. The optional 0.75× reducer helps offset this.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4\" focuser (not 3\")\u003c\/strong\u003e — the 60F uses a 2.4\" focuser rather than the 3\" found on the 91F and above. Fully adequate for the optical format, but worth noting for users accustomed to 3\" systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for planetary imaging\u003c\/strong\u003e — the 408mm focal length is optimized for wide-field deep sky, not high-magnification planetary work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo electronic focuser included\u003c\/strong\u003e — motorized focus requires a separately purchased motor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo eyepieces included\u003c\/strong\u003e — unlike the 91F, the 60F does not ship with eyepieces. A 1.25\" or 2\" eyepiece is required for visual use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The self-flattening quadruplet produces a flat field across the 44mm image circle natively.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it cover full-frame sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The 44mm image circle covers all modern full-frame DSLR, mirrorless, and dedicated astronomy sensors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it good for beginners?\u003c\/strong\u003e\u003cbr\u003eYes — the low weight, simple setup, and self-flattening design make it one of the most beginner-friendly astrographs available. It can also be used on a camera tripod for simple visual observing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the lightest mount that can carry it for imaging?\u003c\/strong\u003e\u003cbr\u003eAt 2.86kg gross, even the lightest equatorial tracking mounts — including the Sky-Watcher Star Adventurer GTi, ZWO AM5, iOptron SkyGuider Pro — can carry it for astrophotography.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs a reducer available?\u003c\/strong\u003e\u003cbr\u003eYes. The Askar 60F 0.75× Reducer (sold separately) reduces the system to f\/5.1 and 311mm focal length.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does it compare to the 91F?\u003c\/strong\u003e\u003cbr\u003eThe 60F is lighter (2.36kg vs 3.92kg), shorter (289mm vs 513mm body), and less expensive. The 91F has more aperture (91mm vs 60mm), a longer focal length (609mm vs 408mm), and includes eyepieces and an erecting prism in the standard package. Choose the 60F for maximum portability; the 91F for more aperture and a more complete out-of-the-box kit.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar 60F Flat-Field\u003c\/strong\u003e for anyone who prioritizes portability above all else without sacrificing flat-field, full-frame optical quality. It is the ideal grab-and-go astrograph for travel, star parties, and ultralight mount setups — and one of the best entry points into serious astrophotography at a highly accessible price. If you need more aperture and aren’t constrained by weight or mount payload, the 91F or 111F will serve you better. But for true portability with no optical compromises, the 60F is in a class of its own in the F Series.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\n\u003cp\u003eThe following optical and mechanical diagrams are provided for customers who wish to review the Askar 60F’s optical performance, mechanical dimensions, connection specifications, and assembly details.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4da5ff7b-ecc0-4710-8946-ed19031fbba6.jpg\" alt=\"Askar 60F Product Size Diagram - tube length and mechanical dimensions with dew shield contracted and extended\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3a4ccbd6-82bd-426b-a686-67e2262fa975.jpg\" alt=\"Askar 60F Connection Diagram - photographic adapter and camera thread connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a859e8f9-aad8-44ea-97e7-b667b77bb291.jpg\" alt=\"Askar 60F Locking Screw Position Diagram - focuser and adapter lock screw locations\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ba0e401b-24ed-4669-a3e2-00786aa1f7ef.jpg\" alt=\"Askar 60F Electronic Focuser Assembly Diagram - motorized focuser motor mounting instructions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4e404fdd-a0cd-4dee-94a8-dd323ee7b67b.jpg\" alt=\"Askar 60F Optical Path Diagram - quadruplet lens group and light path layout\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ce20716a-504a-4d0b-8479-0b5157d2bf41.jpg\" alt=\"Askar 60F Spot Diagram - star spot performance across the full-frame 44mm image circle\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154399879279,"sku":"60F-FLAT-FIELD","price":698.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a3dac66d-7f5a-40dd-b940-f107973989cf.png?v=1779667843"},{"product_id":"askar-sqa55-quintuplet-petzval-astrograph-55mm-f-4-8","title":"Askar SQA55 Quintuplet Petzval Astrograph 55mm f\/4.8","description":"\u003ch2\u003eAskar SQA55 Quintuplet Petzval Astrograph — 55mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is a 55mm aperture, 264mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph designed for astrophotographers who demand sharp, flat full-frame star fields with the speed and portability to image anywhere. The optical design incorporates one piece of SD glass and one piece of ED glass to suppress chromatic aberration across the entire 44mm image circle, producing clean round stars from centre to corner on full-frame and APS-C sensors.\u003c\/p\u003e\n\n\u003cp\u003eAs a Petzval-design telescope, the SQA55 does not require a separate flattener — the five-element optical group delivers a flat field natively. A manual focus ring with an adjustable dew shield allows precise focus control in the field, and the 14-blade aperture diaphragm provides smooth out-of-focus backgrounds when the aperture is stopped down for daytime or landscape photography.\u003c\/p\u003e\n\n\u003cp\u003eThe SQA55 ships with a military-grade waterproof carrying case — one of the only astrographs in this aperture class to do so — making it a genuinely travel-ready system for remote dark-sky sites, star parties, and expeditions.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTravel and portable-mount astrophotographers\u003c\/strong\u003e who need a full-frame-capable astrograph in the smallest, lightest, most rugged package available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate to advanced astrophotographers\u003c\/strong\u003e who want a fast, high-quality Petzval design without adding a flattener to their imaging train.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide-field deep-sky imagers\u003c\/strong\u003e targeting large nebulae, star clusters, and Milky Way fields that benefit from 264mm focal length and f\/4.8 speed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-use photographers\u003c\/strong\u003e who also want a high-quality telephoto lens for landscape and daytime photography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImagers in light-polluted skies\u003c\/strong\u003e where the f\/4.8 speed dramatically shortens required exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA55?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuintuplet Petzval with SD + ED glass\u003c\/strong\u003e — flat-field, colour-corrected performance across the full 44mm image circle at f\/4.8 with no external flattener required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 focal ratio\u003c\/strong\u003e — collects light significantly faster than f\/6 or f\/7 instruments, cutting exposure times for faint nebulae and galaxies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary-grade waterproof case included\u003c\/strong\u003e — the only astrograph in this class that ships with expedition-grade protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e14-blade aperture iris\u003c\/strong\u003e — adjustable from f\/4.8 to f\/22 for daytime photography with smooth, rounded bokeh.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose design\u003c\/strong\u003e — usable as a high-quality telephoto lens for landscape, wildlife, and event photography.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame 44mm image circle\u003c\/strong\u003e — covers all modern full-frame DSLR, mirrorless, and dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and lightweight at 1.84kg OTA\u003c\/strong\u003e — compatible with ultralight tracking mounts for travel imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-release accessory system\u003c\/strong\u003e — four quick-release bases on the tube body accept the optional quick-release handle bar and accessories tool-free.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography (nebulae, star clusters, Milky Way)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging from light-polluted sites\u003c\/li\u003e\n  \u003cli\u003eTravel and remote dark-sky imaging on ultralight mounts\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eLandscape and telephoto photography (daytime use with aperture iris)\u003c\/li\u003e\n  \u003cli\u003ePortable guided and unguided wide-field imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connection:\u003c\/strong\u003e M48×0.75 rear thread with built-in M48×0.75 2\" filter thread. Compatible with standard T-rings and M48 camera adapters. The recommended back focus connection distance is 55mm (range: 50–60mm). DSLR and mirrorless cameras connect via a T-ring; dedicated astronomy cameras with M48 nosepieces connect directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter compatibility:\u003c\/strong\u003e M67 front thread (67mm screw-in filters); M48×0.75 rear thread accepts 2\" astronomy filters directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA55 Quick-Release Handle Bar, SQA55 AF Kit (electronic focuser adapter, sold separately).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot compatible\u003c\/strong\u003e with the SQA Series Handle Bar or SQA Series Heightening Section — those accessories require a different mounting interface and are designed for the SQA70 and larger models.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual focus only\u003c\/strong\u003e — the SQA55 does not have a motorized focuser. An electronic focuser requires the optional SQA55 AF Kit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — the SQA55 has no eyepiece holder or visual adapter. It is a dedicated photographic instrument.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e55mm back focus must be respected\u003c\/strong\u003e — the specified 50–60mm back focus range is critical for field flatness. Spacers outside this range will degrade corner star quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosest focus distance 5m\u003c\/strong\u003e — the SQA55 cannot focus on subjects closer than 5 metres, limiting its terrestrial photography applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo dovetail plate included\u003c\/strong\u003e — the SQA55 ships with the OTA, handle, and carrying case only. A dovetail plate or tube rings are required for mounting on a standard saddle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The quintuplet Petzval design provides a flat field natively across the full 44mm image circle at f\/4.8.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it for visual observing?\u003c\/strong\u003e\u003cbr\u003eNo. The SQA55 is a dedicated imaging instrument with no eyepiece holder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the back focus?\u003c\/strong\u003e\u003cbr\u003e55mm recommended, with a usable range of 50–60mm from the base of the M48×0.75 male thread.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs a motorized focuser available?\u003c\/strong\u003e\u003cbr\u003eYes — the optional SQA55 AF Kit adapts virtually any brand of electronic focuser motor to the SQA55's focus ring, sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work as a camera lens?\u003c\/strong\u003e\u003cbr\u003eYes, with the aperture iris set between f\/4.8 and f\/22. The closest focus distance is 5m, so it is best suited for landscape, astroscape, and distant subjects rather than close-up photography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mount do I need?\u003c\/strong\u003e\u003cbr\u003eAt 2.18kg gross, any equatorial tracking mount with at least a 4–6kg payload rating works well for imaging, including ultralight mounts like the ZWO AM5, iOptron HEM27, or Sky-Watcher Star Adventurer GTi.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e for any astrophotographer who values portability without optical compromise. The f\/4.8 speed, flat-field Petzval design, and military-grade carrying case make it one of the most capable travel astrographs available at any price point. If you regularly image from remote locations, dark-sky parks, or travel internationally for astrophotography, the SQA55 delivers professional-grade results from a system that fits in carry-on luggage. For larger aperture or longer focal length, consider the SQA70 or SQA85.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following diagrams are provided for customers who wish to review the mechanical dimensions, camera connection specifications, and electronic focuser assembly details for the Askar SQA55.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ad04c525-150e-432d-9d40-029448807e34.jpg?vf=B7gH3s\" alt=\"Askar SQA55 Product Size Diagram - tube and dew shield dimensions\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1e3ab7f8-e65b-4607-83e8-a7797fbe3809.jpg?vf=B7gH3s\" alt=\"Askar SQA55 Connection Diagram - M48 rear adapter and camera connection details\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6e54949f-2222-49c1-97bf-44f8e520df8a.jpg?vf=B7gH3s\" alt=\"Askar SQA55 AF Kit Assembly Diagram - electronic focuser motor installation on SQA55 focus ring\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154403614831,"sku":"SQA55-PETZVAL","price":1113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/855d05fd-bdbb-47f2-ab27-4f90b22a2dd3.png?v=1779668681"},{"product_id":"askar-sqa70-quintuplet-petzval-astrograph-70mm-f-4-8","title":"Askar SQA70 Quintuplet Petzval Astrograph 70mm f\/4.8","description":"\u003ch2\u003eAskar SQA70 Quintuplet Petzval Astrograph — 70mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e is a 70mm aperture, 336mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph delivering sharp, flat full-frame star fields across the 44mm image circle. Two pieces of ED glass in the quintuplet optical group control chromatic aberration across the full field, and the Petzval design eliminates the need for an external flattener. With 27% more aperture than the SQA55 and a 336mm focal length that suits both wide-field nebulae and moderately framed galaxies, the SQA70 sits at a versatile middle position in the SQA Series lineup.\u003c\/p\u003e\n\n\u003cp\u003eThe rear adapter accepts M42, M48 (with built-in 2\" filter thread), and M54 connections — giving the SQA70 the widest camera compatibility in the SQA Series. The dew shield retracts for transport, and the OTA ships with an Oxford cloth case. The optional SQA Series Handle Bar and Heightening Section are both compatible with the SQA70.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntermediate to advanced astrophotographers\u003c\/strong\u003e upgrading from smaller astrographs who want more aperture and slightly longer reach than the SQA55.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame imagers\u003c\/strong\u003e who want a versatile focal length that works for both large emission nebulae and framing individual galaxies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on mid-payload mounts\u003c\/strong\u003e — at 3.5kg gross, the SQA70 works well on mounts rated for 6–10kg payload.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-purpose users\u003c\/strong\u003e wanting a fast Petzval for deep-sky imaging that can also serve as a telephoto for daytime photography (no aperture iris — fixed f\/4.8).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA70?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuintuplet Petzval with 2× ED glass\u003c\/strong\u003e — flat-field, well-corrected across the full 44mm image circle at f\/4.8 with no flattener needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8\u003c\/strong\u003e — short exposure times for faint nebulae, ideal for narrowband imaging from light-polluted skies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidest camera compatibility in the SQA Series\u003c\/strong\u003e — M42, M48, and M54 rear adapters included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile focal length at 336mm\u003c\/strong\u003e — well-suited to large nebulae, galaxy groups, and Milky Way star fields.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (37–68mm)\u003c\/strong\u003e — accommodates OAGs, filter drawers, and other accessories in the imaging train.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional Handle Bar and Heightening Section compatible\u003c\/strong\u003e — easy to add carry handle and OTA clearance accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field and mid-focal-length deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eLarge emission and reflection nebulae, galaxy groups, star clusters\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband filter imaging\u003c\/li\u003e\n  \u003cli\u003eFull-frame DSLR, mirrorless, and dedicated astronomy camera imaging\u003c\/li\u003e\n  \u003cli\u003eGuided and unguided portable setups on mid-payload mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M42, M48 (with built-in M48×0.75 2\" filter thread), and M54 adapters included. Recommended back focus 55mm; usable range 37–68mm from the rear adapter base.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section (both compatible). An electronic focuser motor can be fitted; contact us for the correct adapter for your focuser brand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 3.5kg gross, a mount with at least 6–8kg payload is recommended for stable imaging.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo aperture iris\u003c\/strong\u003e — the SQA70 is fixed at f\/4.8. It cannot be stopped down for daytime photography the way the SQA55 can.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter is included or available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — manual focus only; a separate motor adapter is required for automated focusing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with the SQA55 Quick-Release Handle Bar or SQA55 AF Kit — those are SQA55-specific accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The Petzval quintuplet design provides a flat field natively across 44mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA70 compare to the SQA55?\u003c\/strong\u003e\u003cbr\u003eThe SQA70 has more aperture (70mm vs 55mm), a longer focal length (336mm vs 264mm), and wider camera compatibility (M42\/M48\/M54 vs M48 only). The SQA55 has an aperture iris for daytime use and ships with a military waterproof case. The SQA70 is better for imaging; the SQA55 is more portable and travel-rugged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the back focus?\u003c\/strong\u003e\u003cbr\u003e55mm recommended; 37–68mm usable range from the rear adapter base.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e for astrophotographers who want more aperture and focal length than the SQA55 while keeping the system compact and versatile. Its broad camera compatibility, wide back-focus range, and fast f\/4.8 Petzval optics make it an excellent choice for a dedicated imaging refractor on a mid-sized mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following diagrams cover the mechanical dimensions, camera connection specifications, locking screw positions, and electronic focuser assembly for the Askar SQA70.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8d292646-f919-4112-bd3f-5dd0f2bf88b5.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3409f52b-4f6b-46f1-8352-b582287a7052.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c5de3e75-9421-4e89-84e0-f05312ce3cb8.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ecf1a960-561a-4e5e-803a-f96bbd192fc5.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0e0ab408-fc4e-4bd9-b6fc-98ee34b536a9.jpg?vf=B7gH3s\" alt=\"Askar SQA70 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154403909743,"sku":"SQA70-PETZVAL","price":2233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/cc4f41c4-88c5-4e56-9324-f33223f7d5b0.jpg?v=1779668767"},{"product_id":"askar-sqa85-quintuplet-petzval-astrograph-85mm-f-4-8","title":"Askar SQA85 Quintuplet Petzval Astrograph 85mm f\/4.8","description":"\u003ch2\u003eAskar SQA85 Quintuplet Petzval Astrograph — 85mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA85\u003c\/strong\u003e is an 85mm aperture, 408mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph incorporating two pieces of SD glass for high-grade chromatic aberration correction across its full-frame image circle. As the mid-range model in the SQA Series, the SQA85 steps up from the SQA70 with a significantly larger 85mm aperture and 408mm focal length — the same focal length as the Askar 60F, but delivered at f\/4.8 vs f\/6.8, meaning dramatically faster light collection and shorter required exposures.\u003c\/p\u003e\n\n\u003cp\u003eThe Petzval optical design provides a flat field natively, eliminating the need for a separate field flattener. Rear adapter options include M48, M54, and M68, making the SQA85 compatible with medium-format astrocameras. The optional SQA Series Handle Bar and Heightening Section are compatible, and the OTA ships in an Oxford cloth carry case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e seeking a large-aperture, flat-field imaging refractor at a fast focal ratio.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-frame and medium-format imagers\u003c\/strong\u003e who want a Petzval astrograph with M68 connection compatibility for larger sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers targeting faint nebulae and galaxies\u003c\/strong\u003e who benefit from the 85mm aperture and f\/4.8 speed to shorten total integration time significantly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAstrophotographers on medium-to-large payload mounts\u003c\/strong\u003e — at 4.62kg gross, a mount rated for at least 8–10kg is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA85?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — superior chromatic aberration correction compared to standard ED glass designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast f\/4.8 with 85mm aperture\u003c\/strong\u003e — significantly more light-gathering than smaller aperture or slower focal ratio alternatives.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM48, M54, and M68 rear adapters\u003c\/strong\u003e — compatible with medium-format astrocameras and the widest range of dedicated astronomy cameras.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo external flattener required\u003c\/strong\u003e — flat-field Petzval design covers the full 44mm image circle natively.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (40–70mm)\u003c\/strong\u003e — accommodates filters, OAGs, and accessory adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (faint nebulae, galaxy fields, star-forming regions)\u003c\/li\u003e\n  \u003cli\u003eNarrowband imaging (Hα, OIII, SII) from suburban and light-polluted sites\u003c\/li\u003e\n  \u003cli\u003eFull-frame and medium-format camera imaging\u003c\/li\u003e\n  \u003cli\u003eLong-integration imaging sessions on medium-to-large equatorial mounts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Built-in M48×0.75 2\" filter thread. Recommended back focus 55mm; usable range 40–70mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section (both compatible). Electronic focuser motor fitting is possible with appropriate adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e Minimum 8–10kg payload recommended for stable imaging with the SQA85.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter is available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — manual focus only without a separately purchased motor adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRequires a capable mount\u003c\/strong\u003e — at 4.62kg gross, lightweight tracking mounts are not suitable for stable long-exposure imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA85 compare to the SQA70?\u003c\/strong\u003e\u003cbr\u003eThe SQA85 has 85mm vs 70mm aperture, 408mm vs 336mm focal length, SD glass vs ED glass, and M68 compatibility for larger sensors. It collects more light per unit time but requires a heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a flattener?\u003c\/strong\u003e\u003cbr\u003eNo. The Petzval quintuplet design provides a flat field natively.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sensors does it cover?\u003c\/strong\u003e\u003cbr\u003eThe 44mm image circle covers all full-frame sensors. M68 adapters allow connection to medium-format astrocameras up to 55mm diagonal.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, the \u003cstrong\u003eAskar SQA85\u003c\/strong\u003e is our recommendation for advanced astrophotographers ready to step up to a larger-aperture, faster Petzval system. The two pieces of SD glass, M68 adapter compatibility, and f\/4.8 speed make it an excellent choice for serious narrowband and broadband imaging on a mid-to-large equatorial mount.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/94dac034-2489-4eea-b0a7-1eb07dbebac1.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3ebdb692-2464-4f34-a8ea-5e2fe2b05a40.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/65b887ac-8ae3-4bbb-82e8-582719bd009d.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/41845f58-0a1b-4c7e-a55a-304511b3d947.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e6f74d23-8648-4887-aae9-f6a0767a384d.jpg?vf=B7gH3s\" alt=\"Askar SQA85 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404073583,"sku":"SQA85-PETZVAL","price":3353.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/77765394-ec4f-4c6a-88e7-8849461b2e13.png?v=1779668845"},{"product_id":"askar-sqa106-quintuplet-petzval-astrograph-106mm-f-4-8","title":"Askar SQA106 Quintuplet Petzval Astrograph 106mm f\/4.8","description":"\u003ch2\u003eAskar SQA106 Quintuplet Petzval Astrograph — 106mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA106\u003c\/strong\u003e is a 106mm aperture, 509mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph with two pieces of SD glass. As the larger of the two medium-format-capable SQA models, the SQA106 delivers a 55mm image circle that covers medium-format astrocameras such as the QHY600 and ZWO ASI6200, as well as all full-frame sensors. Its 509mm focal length at f\/4.8 is well-suited to framing individual galaxies, compact nebulae, and star-forming regions that benefit from moderate magnification with fast light collection.\u003c\/p\u003e\n\n\u003cp\u003eRear adapter options include M48, M54, and M68. The optional SQA Series Handle Bar and Heightening Section are both compatible. The OTA ships with an Oxford cloth case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced astrophotographers\u003c\/strong\u003e with medium-to-large equatorial mounts seeking the highest-aperture fast Petzval refractor in the SQA Series below the SQA130.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format imagers\u003c\/strong\u003e using cameras with sensors up to 55mm diagonal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers targeting compact or moderately sized objects\u003c\/strong\u003e where a 509mm focal length provides more framing detail than wider systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSerious imagers\u003c\/strong\u003e who need M68 compatibility for maximum sensor coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA106?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e106mm aperture at f\/4.8\u003c\/strong\u003e — the largest aperture fast Petzval astrograph in the SQA Series before the flagship SQA130.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format 55mm image circle\u003c\/strong\u003e — covers APS-C, full-frame (44mm), and medium-format sensors up to 55mm diagonal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — premium chromatic correction for clean star colour across the entire field.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e509mm focal length\u003c\/strong\u003e — versatile for galaxy clusters, compact nebulae, and detailed wide-field imaging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad back-focus range (48–78mm)\u003c\/strong\u003e — accommodates OAGs, filter drawers, and spacers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (galaxies, planetary nebulae, star clusters)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband imaging on large equatorial mounts\u003c\/li\u003e\n  \u003cli\u003eMedium-format astrocamera imaging\u003c\/li\u003e\n  \u003cli\u003eLong-integration sessions requiring maximum aperture efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Recommended back focus 55mm; usable range 48–78mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 8.12kg gross, a mount rated for at least 12–15kg payload is recommended.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavier system\u003c\/strong\u003e — at 8.12kg gross, requires a substantial equatorial mount. Not suitable for lightweight tracking mounts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — requires a separately purchased motor adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA106 differ from the SQA85?\u003c\/strong\u003e\u003cbr\u003eThe SQA106 has 106mm vs 85mm aperture, 509mm vs 408mm focal length, and a larger 55mm image circle vs 44mm. It covers medium-format sensors and provides more detail on compact objects but requires a heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat sensors does it cover?\u003c\/strong\u003e\u003cbr\u003eUp to 55mm diagonal — covers APS-C, full-frame (44mm), and medium-format cameras such as the QHY600M, ZWO ASI6200, and similar.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, we recommend the \u003cstrong\u003eAskar SQA106\u003c\/strong\u003e for advanced astrophotographers on capable mounts who want to step up to a larger aperture, longer focal length Petzval system with medium-format coverage. If your mount can handle the weight, the SQA106 delivers the best combination of speed, aperture, and sensor coverage in the SQA Series before the flagship SQA130.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/781d6501-472e-47d0-a857-87ac0595cb7e.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6054cd08-1ef2-4216-ab11-03c3e751632c.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a07f750f-28e5-40f9-b02a-a58bb523ae21.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c1beb3c6-1947-4f0f-9922-265ec2103f99.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Electronic Focuser Assembly Diagram part 1\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/60137c2e-6cfe-441e-9a53-547241935d8c.jpg?vf=B7gH3s\" alt=\"Askar SQA106 Electronic Focuser Assembly Diagram part 2\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404171887,"sku":"SQA106-PETZVAL","price":4753.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/da1939c1-188a-4d4b-9147-ace5a3276b88.png?v=1779668921"},{"product_id":"askar-sqa130-quintuplet-petzval-astrograph-130mm-f-4-8","title":"Askar SQA130 Quintuplet Petzval Astrograph 130mm f\/4.8","description":"\u003ch2\u003eAskar SQA130 Quintuplet Petzval Astrograph — 130mm f\/4.8\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA130\u003c\/strong\u003e is the flagship of the SQA Series — a 130mm aperture, 624mm focal length, f\/4.8 quintuplet air-spaced Petzval astrograph built for serious deep-sky astrophotographers who demand the maximum combination of aperture, focal length, and speed in a Petzval-design refractor. Two pieces of SD glass provide premium chromatic correction, and the 55mm medium-format image circle covers sensors up to 55mm diagonal, including cameras like the QHY600 series and ZWO ASI6200.\u003c\/p\u003e\n\n\u003cp\u003eAt 624mm focal length and f\/4.8, the SQA130 is the most capable instrument in the SQA range for detailed imaging of compact nebulae, galaxies, and galaxy groups, while the Petzval design still eliminates the need for an external flattener. Rear adapters include M48, M54, and M68. The optional SQA Series Handle Bar and Heightening Section are compatible. The OTA ships with an Oxford cloth case.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced and observatory-level astrophotographers\u003c\/strong\u003e with large-payload equatorial mounts seeking maximum aperture and focal length in a fast Petzval refractor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format imagers\u003c\/strong\u003e requiring a 55mm image circle for their full sensor coverage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeep-sky imagers\u003c\/strong\u003e targeting galaxies, planetary nebulae, and compact emission regions that benefit from 624mm focal length at f\/4.8.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDedicated observatory setups\u003c\/strong\u003e where the weight and size of the SQA130 are not a constraint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Askar SQA130?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlagship 130mm aperture at f\/4.8\u003c\/strong\u003e — the most powerful combination of aperture and speed in the SQA Series.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e624mm focal length\u003c\/strong\u003e — the longest in the series, ideal for detailed imaging of galaxies and compact objects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedium-format 55mm image circle\u003c\/strong\u003e — full coverage for the largest astrocamera sensors available.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo pieces of SD glass\u003c\/strong\u003e — the same premium chromatic correction as the SQA106 and SQA85.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo flattener required\u003c\/strong\u003e — quintuplet Petzval design is flat-field natively across 55mm.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM48, M54, and M68 rear adapters\u003c\/strong\u003e — broadest sensor coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdvanced deep-sky astrophotography (galaxies, compact nebulae, galaxy clusters)\u003c\/li\u003e\n  \u003cli\u003eNarrowband and broadband long-integration imaging\u003c\/li\u003e\n  \u003cli\u003eMedium-format astrocamera imaging\u003c\/li\u003e\n  \u003cli\u003eObservatory and fixed-pier setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCamera connections:\u003c\/strong\u003e M48, M54, and M68 adapters included. Recommended back focus 55mm; usable range 46–76mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional accessories:\u003c\/strong\u003e SQA Series Handle Bar, SQA Series Heightening Section.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMount requirements:\u003c\/strong\u003e At 11.76kg gross, a mount rated for at least 18–20kg payload is strongly recommended for stable imaging. This is a large-aperture observatory-class instrument.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstantial weight and size\u003c\/strong\u003e — at 9.18kg OTA and 11.76kg gross, the SQA130 requires a serious mount and is not suitable for portable setups or travel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot for visual observing\u003c\/strong\u003e — no eyepiece holder or visual adapter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectronic focuser not included\u003c\/strong\u003e — requires a separately purchased motor adapter for auto-focus.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignificant investment\u003c\/strong\u003e — this is the top model in the SQA Series and priced accordingly. Ensure the mount and camera system justify this level of instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the SQA130 compare to the SQA106?\u003c\/strong\u003e\u003cbr\u003eThe SQA130 has 130mm vs 106mm aperture, 624mm vs 509mm focal length, and 11.76kg vs 8.12kg gross weight. Both share the same f\/4.8 speed and 55mm image circle. The SQA130 provides more aperture and a longer focal length for more detailed imaging, but requires a significantly heavier mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for travel?\u003c\/strong\u003e\u003cbr\u003eNo. The SQA130 is an observatory-class instrument. At nearly 12kg gross, it is best suited to fixed or semi-permanent mount setups.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eAt Ontario Telescope and Accessories, the \u003cstrong\u003eAskar SQA130\u003c\/strong\u003e is for astrophotographers who have reached the limits of smaller instruments and need the maximum aperture, speed, and focal length a Petzval refractor can offer. It is the definitive choice for serious imagers with the mount to support it.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3ca0e729-be26-4ccf-8240-206e301472a4.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Product Size Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/f0ed310b-342e-48f3-87aa-d93293a66953.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Connection Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b452b447-48dc-4885-9971-99a0590ef51e.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Locking Screw Position Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image1.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/5dd1729a-2058-4cf6-9248-6705259bfbd4.jpg?vf=B7gH3s\" alt=\"Askar SQA130 Electronic Focuser Assembly Diagram\" style=\"max-width:100%;display:block;margin:1em 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53154404630639,"sku":"SQA130","price":6719.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fbb03084-0ac7-4bd0-ab38-5afd52ff1fc3.png?v=1779668993"},{"product_id":"askar-fra400c-72mm-f-5-6-quintuplet-astrograph","title":"Askar FRA400C 72mm f\/5.6 Quintuplet Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar FRA400C is a refreshed, budget-friendly version of the FRA400. It is a 72mm f\/5.6 quintuplet dual-ED air-spaced APO refractor with a 400mm focal length and a 44mm image circle, designed for deep-sky astrophotography, everyday photography, and visual observing.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThis telescope is best for beginner-to-intermediate astrophotographers who want a compact flat-field refractor, travel imagers who need a manageable optical tube, and visual observers who want a versatile APO refractor that can also support camera work.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e72mm aperture and 400mm focal length for wide-field deep-sky imaging.\u003c\/li\u003e\n\u003cli\u003eQuintuplet dual-ED air-spaced APO optical design.\u003c\/li\u003e\n\u003cli\u003e44mm format support for full-frame imaging setups.\u003c\/li\u003e\n\u003cli\u003eManual focusing with rear-end adapters for M72, M54, and M48 connections.\u003c\/li\u003e\n\u003cli\u003eWorks natively at f\/5.6 and can be paired with the dedicated 0.7x reducer for f\/3.9 imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field nebula and star-field astrophotography.\u003c\/li\u003e\n\u003cli\u003ePortable deep-sky imaging rigs.\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C camera setups.\u003c\/li\u003e\n\u003cli\u003eCasual visual observing with the included 1.25-inch\/2-inch adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe FRA400C rear-end adapter supports M72, M54, and M48 connections, including an M48x0.75 filter thread. The recommended camera connection length is 55mm, with a supported rear-end connection distance range of 50–60mm. The dedicated FRA400C 0.7x Full-Frame Reducer is optional and reduces the system to 280mm at f\/3.9.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManual focus only unless paired with a compatible electronic focuser and the FRA400C AF Kit.\u003c\/li\u003e\n\u003cli\u003eAstrophotography setups still require correct camera spacing and suitable adapters.\u003c\/li\u003e\n\u003cli\u003eA mount with appropriate payload capacity is required for imaging.\u003c\/li\u003e\n\u003cli\u003eThe reducer is not included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the FRA400C good for beginners?\u003c\/h3\u003e\u003cp\u003eYes. It is easier to manage than larger astrographs, but beginners should still expect to learn camera spacing, focusing, polar alignment, and image acquisition basics.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used for wide-field deep-sky astrophotography, especially nebulae, large galaxies, and star fields.\u003c\/p\u003e\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\u003cp\u003eBoth. It is primarily attractive as an astrograph, but the included visual adapter also supports visual observing.\u003c\/p\u003e\u003ch3\u003eDoes it require additional accessories?\u003c\/h3\u003e\u003cp\u003eFor imaging, most users will need a camera, adapter\/spacer combination, guide system if required, and a suitable equatorial mount. The optional reducer is recommended when faster f\/3.9 imaging is desired.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the FRA400C for customers who want a versatile, compact Askar refractor for both imaging and visual use. Choose it when you want a wide-field APO with a full-frame-ready image circle; step up to a larger FRA model if you need more aperture or longer focal length.\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53155904946287,"sku":"FRA400C","price":1253.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FRA400A.webp?v=1779736174"},{"product_id":"askar-fra400-quintuplet-flat-field-astrograph","title":"Askar FRA400 Quintuplet Flat-Field Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar FRA400 is a compact quintuplet astrograph with a 72mm aperture, 400mm focal length, and native f\/5.6 focal ratio. It is designed as a flat-field refractor for wide-field deep-sky astrophotography and can also be used for visual observing with suitable accessories.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe FRA400 is best for beginner-to-intermediate imagers who want a portable wide-field refractor, travel astrophotographers, and advanced users looking for a compact full-frame-capable optical tube for nebulae and large deep-sky targets.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eQuintuplet optical design for flat-field imaging.\u003c\/li\u003e\n\u003cli\u003e72mm aperture and 400mm focal length for wide-field targets.\u003c\/li\u003e\n\u003cli\u003eNative f\/5.6 speed with optional reducer support for faster imaging.\u003c\/li\u003e\n\u003cli\u003eCompact optical tube for travel and portable equatorial mounts.\u003c\/li\u003e\n\u003cli\u003eUseful for nebulae, star fields, large galaxies, and comet imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWide-field deep-sky astrophotography.\u003c\/li\u003e\n\u003cli\u003ePortable imaging rigs.\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C camera setups when correctly configured.\u003c\/li\u003e\n\u003cli\u003eVisual observing with suitable diagonal and eyepieces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe FRA400 can be used natively at 400mm f\/5.6. A dedicated 0.7x reducer is available for users who want a faster and wider f\/3.9 configuration. Imaging users should confirm thread adapters, camera spacing, filter placement, and mount payload before setup.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRequires a suitable equatorial mount for astrophotography.\u003c\/li\u003e\n\u003cli\u003eCamera-side adapters and spacers may be required depending on the imaging train.\u003c\/li\u003e\n\u003cli\u003eThe optional reducer is not included.\u003c\/li\u003e\n\u003cli\u003eNot the best choice for small planetary imaging targets where longer focal length is preferred.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the FRA400 good for beginners?\u003c\/h3\u003e\u003cp\u003eYes. It is a friendly starting point for wide-field imaging, but users should still expect to learn polar alignment, guiding, focusing, and camera spacing.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used for wide-field deep-sky astrophotography, especially larger nebulae, star fields, and extended objects.\u003c\/p\u003e\u003ch3\u003eIs it for visual observing or imaging?\u003c\/h3\u003e\u003cp\u003eIt is primarily an astrograph for imaging, but can also be used visually with suitable accessories.\u003c\/p\u003e\u003ch3\u003eDoes it require additional accessories?\u003c\/h3\u003e\u003cp\u003eMost imagers will need a camera, adapters, filters if desired, a guide system if needed, and a suitable tracking mount.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the FRA400 for customers who want a compact flat-field refractor for wide-field deep-sky imaging. Choose a longer focal length telescope for small galaxies, planets, or close-up lunar work.\u003c\/p\u003e\u003ctable class=\"product-specifications\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFlat-field astrograph refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd\u003e72mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Design\u003c\/th\u003e\n\u003ctd\u003eQuintuplet astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptional Reducer\u003c\/th\u003e\n\u003ctd\u003e0.7x reducer available separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Use\u003c\/th\u003e\n\u003ctd\u003eWide-field deep-sky astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53155914252399,"sku":"FRA400","price":1674.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FRA400Sa.webp?v=1779736657"},{"product_id":"askar-fra600-108mm-f-5-6-quintuplet-astrograph","title":"Askar FRA600 108mm f\/5.6 Quintuplet Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Askar FRA600 is a larger FRA-series quintuplet astrograph with a 108mm aperture, 600mm focal length, and f\/5.6 focal ratio. It is designed for high-quality deep-sky astrophotography with a wider corrected imaging field than a conventional doublet or triplet refractor.\u003c\/p\u003e\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\u003cp\u003eThe FRA600 is best for intermediate and advanced astrophotographers who want more aperture than the smaller FRA models while staying in a manageable refractor format. It suits permanent setups, portable imaging rigs with a capable mount, and users imaging nebulae, galaxies, star fields, and larger deep-sky targets.\u003c\/p\u003e\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e108mm aperture for stronger light-gathering than smaller FRA models.\u003c\/li\u003e\n\u003cli\u003e600mm focal length for a versatile deep-sky field of view.\u003c\/li\u003e\n\u003cli\u003eQuintuplet astrograph design for flat-field imaging performance.\u003c\/li\u003e\n\u003cli\u003eNative f\/5.6 focal ratio with optional reducer support for faster imaging.\u003c\/li\u003e\n\u003cli\u003eUseful for full-frame and APS-C astrophotography setups when properly configured.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography from portable or observatory-class mounts.\u003c\/li\u003e\n\u003cli\u003eNebulae, galaxies, star clusters, and wide-to-medium field targets.\u003c\/li\u003e\n\u003cli\u003eFull-frame camera imaging where a corrected field is important.\u003c\/li\u003e\n\u003cli\u003eAdvanced imaging rigs using filter wheels, cooled cameras, and guiding systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe FRA600 is intended for imaging with appropriate camera adapters, spacing, filters, and a mount with adequate payload capacity. A dedicated F3.9 reducer is available separately for faster, wider-field imaging. Users should confirm camera connection requirements, backfocus needs, and focuser load capacity for their full imaging train.\u003c\/p\u003e\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRequires a capable equatorial mount for serious astrophotography.\u003c\/li\u003e\n\u003cli\u003eNot the most portable option in the FRA series because of its larger aperture and tube size.\u003c\/li\u003e\n\u003cli\u003eDedicated reducer, camera adapters, guide scope, camera, and filters are sold separately unless specified in a package.\u003c\/li\u003e\n\u003cli\u003eNot ideal for small planetary imaging targets compared with long focal length telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the FRA600 good for beginners?\u003c\/h3\u003e\u003cp\u003eIt can be used by a committed beginner, but it is better suited to intermediate and advanced imagers because it needs a stronger mount and a more carefully planned imaging train.\u003c\/p\u003e\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\u003cp\u003eIt is best used for deep-sky astrophotography where a corrected wide-to-medium field and more aperture are desired.\u003c\/p\u003e\u003ch3\u003eIs this for visual observing or astrophotography?\u003c\/h3\u003e\u003cp\u003eIt is primarily an astrograph for imaging. Visual use may be possible with suitable accessories, but imaging is the main reason to choose it.\u003c\/p\u003e\u003ch3\u003eDoes it require additional accessories?\u003c\/h3\u003e\u003cp\u003eYes. Most users will need camera adapters, a camera, filters if required, a guiding solution, and a mount sized appropriately for the telescope and accessories.\u003c\/p\u003e\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\u003cp\u003eOntario Telescope recommends the FRA600 for imagers who want the FRA flat-field design in a larger-aperture platform. Choose it over the smaller FRA models when your mount can handle the extra size and you want more reach and light-gathering power.\u003c\/p\u003e\u003ctable class=\"product-specifications\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFlat-field astrograph refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd\u003e108mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Design\u003c\/th\u003e\n\u003ctd\u003eQuintuplet astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptional Reducer\u003c\/th\u003e\n\u003ctd\u003eDedicated F3.9 reducer available separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Use\u003c\/th\u003e\n\u003ctd\u003eDeep-sky astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53155927982191,"sku":"FRA600","price":3634.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/FRA600a.webp?v=1779736792"},{"product_id":"askar-50p-50mm-f-3-8-quadruplet-apo-astrograph","title":"Askar 50P 50mm f\/3.8 Quadruplet APO Astrograph","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Askar 50P is a compact 50mm f\/3.8 quadruplet Petzval APO astrograph designed for portable wide-field deep-sky imaging. With a 190mm focal length, SD glass in the objective design, and an M48 rear camera connection, it is built for travel-friendly astrophotography rigs, lightweight mounts, and modern CMOS cameras.\u003c\/p\u003e\n\u003cp\u003eThis telescope is optimized for 1-inch sensors and supports APS-C format use, making it a practical option for nebulae, large star fields, Milky Way regions, comet imaging, and other wide-field targets where speed and portability matter.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is This Product Best For?\u003c\/h2\u003e\n\u003cp\u003eThe 50P is best for beginner-to-intermediate astrophotographers who want a simple, portable imaging telescope, as well as advanced users looking for a lightweight grab-and-go wide-field astrograph. It is especially suitable for users with small cooled cameras, mirrorless camera adapters, or one-shot colour astronomy cameras.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFast f\/3.8 optical system for efficient deep-sky imaging.\u003c\/li\u003e\n  \u003cli\u003eQuadruplet Petzval APO design helps simplify field correction compared with traditional doublets or triplets.\u003c\/li\u003e\n  \u003cli\u003e50mm aperture and 190mm focal length make it excellent for large nebulae and wide star fields.\u003c\/li\u003e\n  \u003cli\u003eCompact 147mm contracted tube length for portable and travel imaging setups.\u003c\/li\u003e\n  \u003cli\u003eM48 rear connection with M48×0.75 filter thread for common astronomy camera accessories.\u003c\/li\u003e\n  \u003cli\u003eRecommended 55mm camera connection length with support for 50–65mm connection range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWide-field deep-sky astrophotography\u003c\/li\u003e\n  \u003cli\u003eNebula and Milky Way region imaging\u003c\/li\u003e\n  \u003cli\u003ePortable tracking-mount imaging rigs\u003c\/li\u003e\n  \u003cli\u003eOne-shot colour CMOS camera setups\u003c\/li\u003e\n  \u003cli\u003eTravel astrophotography with lightweight mounts\u003c\/li\u003e\n  \u003cli\u003eLarge-target imaging where a short focal length is preferred\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\n\u003cp\u003eThe 50P uses an M48 rear adapter with an M48×0.75 filter thread. It supports a rear-end connection distance from 50mm to 65mm, with 55mm recommended for typical imaging setups. The telescope is optimized for 1-inch sensors and supports APS-C format use. The standard package includes the 50P OTA and manual.\u003c\/p\u003e\n\u003cp\u003eFor autofocus, the separate Askar 50P AF Kit can be used with compatible electronic focusers. Camera adapters, filters, spacers, and electronic focusers are sold separately unless specifically included in a bundle.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThis is primarily an imaging astrograph, not a general-purpose visual observing telescope.\u003c\/li\u003e\n  \u003cli\u003eCamera spacing still matters; the recommended connection length is 55mm.\u003c\/li\u003e\n  \u003cli\u003eLarge full-frame sensors are not the ideal match; the vendor specifies APS-C format support and optimization for 1-inch sensors.\u003c\/li\u003e\n  \u003cli\u003eA suitable tracking mount, camera, power, control hardware, and imaging accessories are required for astrophotography.\u003c\/li\u003e\n  \u003cli\u003eThe electronic focuser kit is not included with the standard 50P OTA package.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs the Askar 50P good for beginners?\u003c\/h3\u003e\n\u003cp\u003eYes, it can be a strong beginner astrophotography telescope because the short focal length is forgiving and the fast f\/3.8 focal ratio helps collect signal quickly. Beginners will still need a suitable mount, camera, and basic spacing setup.\u003c\/p\u003e\n\u003ch3\u003eWhat is it best used for?\u003c\/h3\u003e\n\u003cp\u003eIt is best used for wide-field deep-sky astrophotography, especially large nebulae, star fields, comet imaging, and portable imaging rigs.\u003c\/p\u003e\n\u003ch3\u003eIs it for visual observing or astrophotography?\u003c\/h3\u003e\n\u003cp\u003eIt is primarily recommended for astrophotography. Visual observing may require additional adapters and is not the main reason to choose this telescope.\u003c\/p\u003e\n\u003ch3\u003eWhat cameras work well with it?\u003c\/h3\u003e\n\u003cp\u003eSmall and medium astronomy cameras are the best match. The vendor lists APS-C format support and notes that the design is optimized for 1-inch sensors.\u003c\/p\u003e\n\u003ch3\u003eDoes it require additional accessories?\u003c\/h3\u003e\n\u003cp\u003eMost imaging setups will require a camera, mount, power\/control system, adapters or spacers, and possibly filters. Autofocus requires the separate 50P AF Kit and a compatible electronic focuser.\u003c\/p\u003e\n\u003ch3\u003eWhen should it not be recommended?\u003c\/h3\u003e\n\u003cp\u003eDo not choose it as a primary visual telescope, for high-magnification planetary imaging, or when a longer focal length is required for small galaxies or compact targets.\u003c\/p\u003e\n\n\u003ch2\u003eOur Recommendation\u003c\/h2\u003e\n\u003cp\u003eOntario Telescope recommends the Askar 50P for customers who want a compact, fast, and easy-to-carry wide-field astrograph. It solves the problem of building a portable imaging system without moving to a large telescope and heavy mount. Choose a longer focal length telescope instead if your main targets are planets, small galaxies, or tight detail in compact objects.\u003c\/p\u003e\n\n\u003ch2\u003eOptical Diagram Reports\u003c\/h2\u003e\n\u003cp\u003eThe following vendor-supplied diagrams help show the 50P mechanical layout, camera connection path, focuser accessory arrangement, optical path, and spot performance.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4b592863-0c9e-40b2-af5a-7881ceb98918.jpg\" alt=\"Askar 50P product size diagram for compact wide-field astrograph setup\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/53750a02-65d0-40b3-b979-f8990189ba27.jpg\" alt=\"Askar 50P camera connection diagram with M48 imaging adapter\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/262df748-2627-46dc-8157-bc61908350ef.jpg\" alt=\"Askar 50P electronic focuser assembly diagram for autofocus setup\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ca61e887-1787-4d3d-8a49-01b8b40f5768.jpg\" alt=\"Askar 50P optical path diagram for astrophotography configuration\"\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/55962810-f3d9-403c-b203-4601f589f04a.jpg\" alt=\"Askar 50P spot diagram for wide-field astrophotography performance\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":53155932438639,"sku":"50P","price":418.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/50p1.webp?v=1779737209"}],"url":"https:\/\/ontariotelescope.com\/collections\/astrographs-askar.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}