{"title":"Askar Telescopes","description":"\u003cp\u003eAskar telescopes are apochromatic refractors and astrographs made mainly for astrophotography, in several optical designs. The SQA Petzval quintuplets such as the SQA85 and SQA130 and the FRA quintuplets are fast and wide, the PHQ quadruplets and F flat-field models give longer focal lengths with a flat field, and the APO triplets from the 120APO to the 185APO suit high-resolution work.\u003c\/p\u003e\u003cp\u003eThe 50P, an f\/3.8 quadruplet, is a very compact option for wide fields.\u003c\/p\u003e","products":[{"product_id":"askar-fra400-72mm-f-5-6-quintuplet-apo","title":"Askar FRA400 72mm f\/5.6 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e72mm Aperture Quintuplet APO Lens\u003c\/li\u003e\n\u003cli\u003e400mm Focal Length at f\/5.6\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003e140mm Available Back Focus\u003c\/li\u003e\n\u003cli\u003e3\" Rack-and-Pinion Focuser with 360° Rotator\u003c\/li\u003e\n\u003cli\u003e2.88kg Total Weight with Rings and Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FRA400 72mm f\/5.6 Quintuplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA400 is a portable imaging instrument designed around a 72mm f\/5.6 quintuplet objective that delivers a natively flat 44mm image circle without requiring an external flattener. Its 400mm focal length provides an ideal image scale for large nebulae and star fields, while the entire optical tube assembly weighs just 2.56kg. With a generous 140mm of back focus and a total weight of 2.88kg including its mounting hardware, this Flat-field Refractive Astrograph (FRA) is engineered for full-frame imaging from the moment you take it out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuintuplet Optics: A 44mm Flat Field with Zero Hassle\u003c\/h3\u003e\n\u003cp\u003eThe core of the FRA400 is its 5-element Petzval-like optical design, which incorporates two ED glass elements to achieve apochromatic color correction. This design corrects for field curvature internally, eliminating the need to purchase and correctly space a separate field flattener. The result is a 44mm image circle, fully illuminating full-frame sensors with sharp, pinpoint stars from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging Mechanics: 3\" Focuser and 360° Rotator\u003c\/h3\u003e\n\u003cp\u003eBuilt for modern astrophotography, the FRA400 features a robust 3-inch rack-and-pinion focuser that can handle heavy imaging trains without flexure or slippage. A 360-degree rotator allows for precise framing of your target without disturbing focus, while a fine-focus knob enables critical adjustments. The entire assembly, measuring just 317mm with its dew shield retracted, is built for stability and portability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e140mm Back Focus: Room for Any Imaging Train\u003c\/h3\u003e\n\u003cp\u003eOne of the FRA400's most significant advantages is its 140mm of available back focus, measured from the M68x1 male thread on the rotator. This extensive travel provides ample room to accommodate complex imaging setups, including filter wheels, off-axis guiders, and rotators. Askar includes a conical M68-M48 adapter, as well as 2-inch and 1.25-inch adapters, ensuring compatibility with virtually any camera or accessory right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"FRA\" mean for the Askar FRA400?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eFRA\u003c\/strong\u003e stands for \u003cstrong\u003eF\u003c\/strong\u003elat-field \u003cstrong\u003eR\u003c\/strong\u003eefractive \u003cstrong\u003eA\u003c\/strong\u003estrograph. This means the Askar FRA400 is designed with a built-in optical element that corrects for field curvature, so you do not need a separate field flattener. It produces a flat, sharp image across its entire 44mm image circle natively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to buy a separate field flattener for the Askar FRA400?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The quintuplet (5-element) objective lens design provides a corrected 44mm image circle without any additional accessories. You can attach your full-frame or smaller camera directly and achieve sharp stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar FRA400's 44mm image circle work with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard full-frame sensor has a diagonal of approximately 43.3mm. The Askar FRA400's specified \u003cstrong\u003e44mm image circle\u003c\/strong\u003e fully illuminates these sensors, preventing vignetting (darkening of the corners) and ensuring your entire frame is usable for imaging large targets like the Andromeda Galaxy (M31) or the Veil Nebula complex.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FRA400 suitable for a portable \"grab-and-go\" setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With an optical tube weight of \u003cstrong\u003e2.56kg\u003c\/strong\u003e and a total weight of \u003cstrong\u003e2.88kg\u003c\/strong\u003e with rings and dovetail, the Askar FRA400 is extremely lightweight. Its compact 317mm length makes it easy to transport and mount on lighter-duty equatorial mounts, making it an excellent choice for field imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 140mm back focus on the Askar FRA400?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e140mm back focus\u003c\/strong\u003e provides extensive space for accessories. This is critical for imagers who use:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Wheels:\u003c\/strong\u003e Easily fits large filter wheels for LRGB or narrowband imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-Axis Guiders (OAGs):\u003c\/strong\u003e Provides enough room to place an OAG in the optical path for precise guiding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotators:\u003c\/strong\u003e Accommodates electronic rotators for automated framing.\u003c\/li\u003e\n\u003c\/ul\u003e\nThis flexibility allows you to build a sophisticated imaging train without worrying about running out of focus travel.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FRA400 for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While designed as an astrograph, the Askar FRA400 performs very well for visual use. The included 2\" and 1.25\" adapters allow you to use standard diagonals and eyepieces for wide-field views of star clusters and nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e72mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet dual ED air-spaced APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e140mm (from M68x1 thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e317mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2.56kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight (with rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e2.88kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003eM68x1 Male Thread, 2\" Adapter, 1.25\" Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar FRA400 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM68-M48 Conical Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInspection List\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_FRA400C_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967765082397,"sku":"ASK-FRA400","price":1679.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA400-1__17210.1610295680.1280.1280.jpg?v=1684345825"},{"product_id":"askar-fra600-108mm-f-5-6-quintuplet-apo","title":"Askar FRA600 108mm f\/5.6 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e108mm Aperture\u003c\/li\u003e\n\u003cli\u003e600mm Focal Length (f\/5.6)\u003c\/li\u003e\n\u003cli\u003eQuintuplet Flat-Field APO Optical Design\u003c\/li\u003e\n\u003cli\u003e66mm Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eTotal Weight of 6.5kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FRA600 108mm f\/5.6 Quintuplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA600 is a purpose-built astrograph featuring a 108mm quintuplet objective that delivers a massive 66mm flat-field image circle at a native f\/5.6 focal ratio. Its Petzval design, incorporating two ED glass elements, requires no separate flattener, providing pinpoint stars across the largest camera sensors from a compact 493mm optical tube. With a total instrument weight of 6.5kg and an expansive 160mm of back focus, the FRA600 is engineered for serious wide-field imagers who demand optical correction and mechanical stability in a single, integrated package.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuintuplet Petzval Optics: A 66mm Flat-Field Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the FRA600 is its 5-element (quintuplet) optical system. This advanced Petzval design uses a front triplet and a rear doublet, including two ED elements, to achieve a high degree of apochromatic correction. The result is a 600mm focal length system that produces a 66mm image circle, fully illuminating and correcting for field curvature on sensors far larger than the APS-C format, including full-frame and medium-format chips.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Flattener:\u003c\/strong\u003e Unlike traditional refractors that require a separate, correctly-spaced flattener, the FRA600's correction is integral to the design. This eliminates a common source of tilt and spacing errors in the imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApochromatic Correction:\u003c\/strong\u003e The inclusion of two ED (Extra-low Dispersion) glass elements minimizes chromatic aberration, ensuring that stars are tight, high-contrast points without distracting purple or green fringing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Illumination:\u003c\/strong\u003e The rear lens group is intentionally oversized to reduce vignetting and maintain even field illumination out to the edge of the 66mm circle, critical for producing clean, gradent-free images.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Portable 493mm Design with a 6.5kg Payload\u003c\/h3\u003e\n\u003cp\u003eEngineered for both backyard and field use, the FRA600 packs its 108mm aperture into a surprisingly compact and manageable form factor. With its dew shield retracted, the optical tube measures just 493mm in length, making it easy to transport and mount. The total weight, including the supplied tube rings and dovetail, is only 6.5kg, placing it well within the capacity of many modern portable equatorial mounts.\u003c\/p\u003e\n\u003cp\u003eA robust rack-and-pinion focuser provides the rigidity needed to carry heavy imaging trains without slipping or flexure. The focuser features a 1:10 micro-adjustment knob for precise critical focus, a 360-degree rotator for camera framing, and a series of threaded adapters to ensure a solid connection to your equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e160mm Back Focus and a Multi-Thread Adapter System\u003c\/h3\u003e\n\u003cp\u003eThe FRA600 provides a generous 160mm of back focus measured from the M90x1 thread on the focuser rotator. This ample distance accommodates complex imaging setups, including off-axis guiders, filter wheels, and rotators. To simplify connections, Askar includes a conical adapter that provides M68x1, M54x0.75, and M48x0.75 male threads, covering the most common standards for flatteners, cameras, and other accessories.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Threaded Connections:\u003c\/strong\u003e The system is designed around threaded adapters rather than compression rings, preventing camera tilt and ensuring a rigid optical path from the focuser to the sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapter Versatility:\u003c\/strong\u003e The conical adapter directly accommodates full-frame cameras with M48 threads and provides larger M54 and M68 threads for connecting to other specialized equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 2\" and 1.25\" Adapters:\u003c\/strong\u003e For visual use or connecting planetary cameras, standard 2\" and 1.25\" adapters are also included, making the scope ready for observation out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar FRA600 vs. Triplet APOs: The Built-in Flattener Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a premium 108mm triplet APO can deliver excellent color correction, it almost always requires an external field flattener to produce a flat field for astrophotography. The Askar FRA600's quintuplet design integrates this function into the main optics, offering distinct advantages.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Simplicity:\u003c\/strong\u003e You don't need to purchase and correctly space a separate flattener. The FRA600 is flat by design, simplifying your imaging train and reducing potential points of failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Correction:\u003c\/strong\u003e The optical prescription is a single, cohesive system. The lenses are designed from the ground up to work together, providing correction across a massive 66mm circle that is often difficult to achieve with bolt-on accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effectiveness:\u003c\/strong\u003e When factoring in the cost of a high-quality, large-format field flattener for a comparable triplet, the integrated design of the FRA600 often represents a superior value for the dedicated astro-imager.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the Askar FRA600's 66mm image circle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003e66mm image circle\u003c\/strong\u003e is exceptionally large, capable of covering full-frame (44mm diagonal) and even some medium-format camera sensors without significant vignetting or distorted stars at the edges. This makes the Askar FRA600 ideal for capturing vast, high-resolution mosaics of nebulae and star fields.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my full-frame DSLR or mirrorless camera to the Askar FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can connect your camera using the included conical adapter. This adapter terminates in a standard \u003cstrong\u003eM48x0.75 male thread\u003c\/strong\u003e. You will need a camera-specific M48 T-ring to attach your camera body. Ensure your total spacing, including the T-ring's optical depth, matches the standard 55mm back focus from the M48 thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FRA600's quintuplet design better than a triplet with a flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt's a different approach designed for simplicity and optical optimization. The \u003cstrong\u003eintegrated Petzval design\u003c\/strong\u003e of the Askar FRA600 ensures the flattening is perfectly matched to the objective lenses. This eliminates the need to calculate and test spacing for an external flattener, reducing potential sources of tilt and error in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar FRA600 be used for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The Askar FRA600 is an excellent visual instrument. Its apochromatic optics provide high-contrast, color-pure views of planets, the Moon, and deep-sky objects. It includes standard \u003cstrong\u003e2\" and 1.25\" adapters\u003c\/strong\u003e to accommodate any standard diagonal and eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar FRA600 frame large targets like the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its \u003cstrong\u003e600mm focal length\u003c\/strong\u003e, the Askar FRA600 is perfectly suited for large celestial objects. When paired with a full-frame camera sensor, it can easily frame the entirety of the North American Nebula (NGC 7000) and the neighboring Pelican Nebula (IC 5070) in a single shot, with plenty of room to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 6.5kg weight of the Askar FRA600 suitable for a portable mount like a ZWO AM5?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. At a total weight of \u003cstrong\u003e6.5kg\u003c\/strong\u003e including rings and dovetail, the Askar FRA600 is well within the payload capacity of mounts in the AM5 or Sky-Watcher HEQ5 class. When you add a camera and guide scope, the total imaging payload will remain manageable for these popular and portable mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e108mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Type\u003c\/td\u003e\n\u003ctd\u003eQuintuplet flat-field APO (including two ED elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e66mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e160mm (from the end of rotator M90x1 thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e493mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e6.5kg (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Packing Weight\u003c\/td\u003e\n\u003ctd\u003e7.8kg (not including Aluminum case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack-end Adapter\u003c\/td\u003e\n\u003ctd\u003eM108x1 male thread (no rotator), M90x1 male thread, 2\" adapter \/ 1.25\" adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConical Adapter Threads\u003c\/td\u003e\n\u003ctd\u003eM90×1 to M68×1 to M54x0.75 to M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFRA600 Optical Tube Assembly\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSectional Conical Tube Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInspection List\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967778779421,"sku":"ASK-FRA600","price":3639.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA600-1__27560.1610296043.1280.1280.png?v=1684345835"},{"product_id":"askar-fra500-90mm-f-5-6-quintuplet-apo","title":"Askar FRA500 90mm f\/5.6 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90mm Aperture Quintuplet APO Optics\u003c\/li\u003e\n\u003cli\u003e500mm Focal Length at f\/5.6\u003c\/li\u003e\n\u003cli\u003eMassive 55mm Flat-Field Image Circle\u003c\/li\u003e\n\u003cli\u003eIncludes Two ED Glass Elements\u003c\/li\u003e\n\u003cli\u003eTotal Assembled Weight of 5.2kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FRA500 90mm f\/5.6 Quintuplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA500 Astrograph combines a 90mm aperture and 500mm focal length into a portable f\/5.6 optical system designed for serious deep-sky imaging. Its quintuplet air-spaced APO objective, which includes two ED glass elements, delivers a massive 55mm corrected image circle, fully illuminating full-frame sensors and beyond with no additional flattener required. With a total weight of just 5.2kg including rings and plate, the FRA500 is engineered for field portability without compromising on optical stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuintuplet APO Optics: A Flat 55mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the FRA500 is its 5-element Petzval-style optical design, which provides a natively flat field without the need for a separate flattener. The front triplet objective, featuring two pieces of extra-low dispersion (ED) glass, ensures excellent color correction, while the rear doublet corrects for field curvature. This produces sharp, pinpoint stars across an exceptionally wide 55mm image circle, exceeding the diagonal of a standard 44mm full-frame sensor and providing ample room for framing large targets or accommodating larger format cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Design: A 3.5\" Focuser and 158mm of Back Focus\u003c\/h3\u003e\n\u003cp\u003eBuilt for the demands of modern astrophotography, the FRA500 features a robust 3.5-inch rack-and-pinion focuser with 1:10 dual-speed control for precise adjustments, even with heavy camera payloads. The system simplifies imaging train configuration by offering generous, fixed back focus distances. You have 158mm of focus travel from the base of the M86x1 rotator thread and 85mm from the base of the included M48x0.75 conical adapter, eliminating the guesswork of spacing and adapters. This allows you to directly attach your camera, filter wheel, and off-axis guider with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eField-Ready Mechanics: A Portable 5.2kg Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eEngineered for transport and stability, the FRA500's optical tube weighs only 4.1kg and measures just 452mm with its dew shield extended (407mm retracted). The complete package, including the CNC-machined tube rings, carry handle, and Losmandy-style dovetail plate, comes in at a manageable 5.2kg. This makes the astrograph an ideal choice for portable setups on mid-range equatorial mounts, allowing you to travel to dark-sky sites without sacrificing the optical power needed for high-resolution imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar FRA500 vs. FRA400 \u0026amp; FRA600: Finding the Sweet Spot\u003c\/h3\u003e\n\u003cp\u003eThe FRA500 is strategically positioned within Askar's Flatfield Refractor Astrograph series to offer a balanced solution for many imagers. It provides a significant step up in aperture and light-gathering power over the smaller FRA400, giving you more resolving power for distant galaxies and fine nebula detail. Compared to the larger FRA600, the FRA500 is substantially lighter and more compact, requiring a less demanding mount and making it a far more practical choice for travel and quick setup. For many astrophotographers, the FRA500 represents the ideal compromise between aperture, focal length, and portability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of camera sensor is the Askar FRA500's 55mm image circle for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e55mm image circle\u003c\/strong\u003e is designed to fully illuminate and correct for sensors larger than standard full-frame (44mm diagonal). This makes the Askar FRA500 an excellent match for full-frame DSLR\/mirrorless cameras and dedicated astronomy cameras with large sensors like the ZWO ASI6200 or QHY600, ensuring pinpoint stars and no vignetting at the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate field flattener for the Askar FRA500?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar FRA500 features an integrated \u003cstrong\u003equintuplet (5-element) Petzval optical design\u003c\/strong\u003e. This design inherently corrects for field curvature, providing a flat field across the entire 55mm image circle without the need for any additional flattener or reducer lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar FRA500 frame large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its \u003cstrong\u003e500mm focal length\u003c\/strong\u003e, the Askar FRA500 provides an ideal image scale for large deep-sky objects. When paired with a full-frame sensor, it can comfortably frame the entirety of the Andromeda Galaxy (M31), the North American Nebula (NGC 7000), or the Veil Nebula complex in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar FRA500's 5.2kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe total imaging weight is \u003cstrong\u003e5.2kg\u003c\/strong\u003e for the telescope, rings, and plate. Once you add a guide scope, camera, and other accessories, your total payload will likely be around 7-9kg. A mid-range equatorial mount with a payload capacity of 13kg (30 lbs) or more, such as a Sky-Watcher HEQ5 or iOptron CEM26\/GEM28, would be a stable platform for imaging with the FRA500.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the 85mm and 158mm back focus distances on the FRA500 for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are the two primary connection options for your imaging train. The \u003cstrong\u003e158mm distance\u003c\/strong\u003e is measured from the M86x1 thread on the rotator, giving you maximum space for complex setups. The \u003cstrong\u003e85mm distance\u003c\/strong\u003e is measured from the M48x0.75 thread on the included conical adapter, which is a more common connection for DSLRs or cameras with integrated filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FRA500 for imaging the Orion Nebula (M42) from a portable setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The Orion Nebula (M42) is a perfect target for this telescope. Its f\/5.6 focal ratio is fast enough to capture faint nebulosity quickly, and its 500mm focal length will resolve fine details in the Trapezium region. Given its total weight of 5.2kg, the FRA500 is an excellent choice for a high-performance portable imaging rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e500mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet air-spaced APO (including two ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e85mm (from M48x0.75 thread); 158mm (from M86x1 thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM86x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConical Adapter\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e452mm (407mm with dew shield contracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e4.1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e5.2kg (including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFRA500 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eConical Extender (M48x0.75)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967965425949,"sku":"ASK-FRA500","price":2799.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA500__40204.1641245267.1280.1280.jpg?v=1684347331"},{"product_id":"askar-fra300-60mm-f-5-quintuplet-apo","title":"Askar FRA300 Pro 60mm f\/5 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture Quintuplet APO Astrograph\u003c\/li\u003e\n\u003cli\u003e300mm Focal Length at a Fast f\/5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Petzval Corrector Design\u003c\/li\u003e\n\u003cli\u003e2.5\" Dual-Speed Rack-and-Pinion Focuser\u003c\/li\u003e\n\u003cli\u003eTotal Assembled Weight: 3.12kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FRA300 Pro 60mm f\/5 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA300 Pro combines a 60mm aperture with a fast f\/5 native focal ratio to create an incredibly portable imaging platform. Its 300mm focal length is ideal for wide-field targets, while the advanced quintuplet Petzval optical design illuminates a 44mm full-frame image circle with sharp stars edge-to-edge. Weighing just 2.26kg for the optical tube, the FRA300 Pro is built for imagers who need uncompromising optical quality in a package that travels anywhere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e60mm f\/5 Quintuplet Petzval Optics with a 44mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe optical system is the core of the FRA300 Pro. Its five-element, fully air-spaced design includes one ED glass element to deliver apochromatic performance with no false color. The f\/5 focal ratio gathers light significantly faster than typical f\/6 or f\/7 refractors, reducing your total exposure time on faint nebulae.\u003c\/p\u003e\n\u003cp\u003eBecause it is a native Petzval design, the flattener is built directly into the optical tube. This removes the need for complex back-focus calculations; as long as your camera sensor is near the specified 67mm to 71mm working distance, you will achieve a corrected field across a full-frame 44mm sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e2.5\" Rack-and-Pinion Focuser and 3.12kg Assembly\u003c\/h3\u003e\n\u003cp\u003eTo support full-frame camera packages, the FRA300 Pro is equipped with a heavy-duty 2.5-inch rack-and-pinion focuser. It features dual-speed 10:1 reduction knobs for precise adjustments and can handle the weight of a filter wheel and cooled camera without slipping. The entire optical tube assembly is just 303mm long and weighs 2.26kg (3.12kg with rings and plate), making it an ideal match for portable tracking mounts.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Rotator:\u003c\/strong\u003e The rear of the focuser includes a 360° rotator, allowing you to frame your target perfectly without rotating your entire imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Rings:\u003c\/strong\u003e The included tube rings, handle, and 300mm Vixen-style dovetail plate are CNC machined for a secure and lightweight fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated Corrector and Full-Frame Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe FRA300 Pro is built as a complete imaging system, ready for your camera out of the box. The rear of the focuser terminates in a standard M48x0.75 male thread, but Askar also includes M54 and M42 adapters to ensure compatibility with a wide range of cameras and accessories. This flexibility allows you to achieve the optimal connection for your specific setup.\u003c\/p\u003e\n\u003cp\u003eThe fixed optical corrector simplifies your workflow immensely. Unlike systems requiring separate flatteners or reducers, the FRA300 Pro delivers its corrected 44mm image circle natively. You simply attach your camera, focus, and begin imaging, confident that the field is flat and the stars are sharp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Petzval design of the Askar FRA300 Pro mean for my imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003ePetzval\u003c\/strong\u003e design means the field-flattening optical elements are built directly into the main telescope tube. For you, this eliminates the need to buy a separate flattener and, more importantly, removes the headache of calculating a precise back-focus distance. As long as your camera's sensor is within the recommended range, the 44mm image circle will be fully corrected.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the FRA300 Pro frame the Andromeda Galaxy (M31) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its \u003cstrong\u003e300mm focal length\u003c\/strong\u003e, the Askar FRA300 Pro is perfectly suited for large targets like the Andromeda Galaxy (M31). On a full-frame sensor (36x24mm), it provides a field of view of approximately 6.8° x 4.5°, which is wide enough to capture the entire galaxy and its satellite companions, M32 and M110, with ample space for framing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of the f\/5 focal ratio on the FRA300 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/5 focal ratio\u003c\/strong\u003e allows the telescope to collect the same amount of light in a shorter period compared to slower f\/6 or f\/7 systems. This means you can achieve deep signal on faint nebulae with shorter individual sub-exposures, reducing the demands on your mount's tracking accuracy and letting you complete projects faster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 60mm aperture of the FRA300 Pro enough for faint deep-sky objects?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While aperture is important, the fast f\/5 focal ratio is key for imaging faint, extended objects like the North America Nebula (NGC 7000) or the Veil Nebula complex. The \u003cstrong\u003e60mm aperture\u003c\/strong\u003e provides high-resolution detail, while the f\/5 speed efficiently captures faint nebulosity, making it a powerful tool despite its compact size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar FRA300 Pro's 3.12kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of only \u003cstrong\u003e3.12kg\u003c\/strong\u003e including the rings and dovetail plate, the FRA300 Pro is an excellent match for high-quality portable tracking mounts. Mounts rated for a payload of 5-7kg (11-15 lbs) or more, such as a Sky-Watcher Star Adventurer GTI or ZWO AM3, will provide a very stable platform for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FRA300 Pro for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the FRA300 Pro is optically optimized as an astrograph for imaging, it can be used for low-power visual observation with a 1.25\" or 2\" diagonal and eyepiece. However, its primary strength lies in providing a flat, corrected field for camera sensors, which is a different design goal than a dedicated visual telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Design\u003c\/td\u003e\n\u003ctd\u003eQuintuplet fully air-spaced Petzval APO (with one ED glass element)\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\u003eBack Focus \/ Working Distance\u003c\/td\u003e\n\u003ctd\u003e71mm from M42×0.75 male thread\u003cbr\u003e67mm from M48×0.75 male thread\u003cbr\u003e71mm from M54×1 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Thread (Focuser)\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e303mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2.26kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e3.12kg (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFRA300 Pro OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 300mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM54x0.75 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42x0.75 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eWarranty Card\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44968028897565,"sku":"ASK-FRA300","price":1329.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA300-Pro-1__97100.1656532375.1280.1280.jpg?v=1684348071"},{"product_id":"askar-107phq-f-7-quadruplet-apo","title":"Askar 107PHQ f\/7 Quadruplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e107mm Quadruplet APO Optical Design\u003c\/li\u003e\n\u003cli\u003e749mm Focal Length at f\/7\u003c\/li\u003e\n\u003cli\u003e44mm Corrected Image Circle for Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener for Simplified Imaging\u003c\/li\u003e\n\u003cli\u003e6.9kg Total Weight with Rings and Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 107PHQ f\/7 Quadruplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 107PHQ f\/7 Quadruplet APO Astrograph integrates a field flattener directly into its 107mm quadruplet optical design, delivering a perfectly flat 44mm image circle without the need for complex accessories. Its 749mm focal length resolves fine detail in distant galaxies, while the air-spaced objective with two ED glass elements ensures superb color correction from edge to edge. At a total weight of just 6.9kg including its 300mm Vixen dovetail, the 107PHQ is a complete, grab-and-go imaging platform for full-frame sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 44mm Flat Field with Zero Back-Focus Hassle\u003c\/h3\u003e\n\u003cp\u003eThe core of the 107PHQ is its Petzval-like quadruplet design, which places a correcting lens group permanently within the optical tube. This eliminates the single most common point of failure in astrophotography setups: calculating and setting the correct back-focus distance. With the 107PHQ, you simply attach your camera using the included adapters, achieve focus, and the entire 44mm image circle is corrected, ensuring pinpoint stars across a full-frame sensor without any guesswork.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ef\/7 Imaging at 749mm for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eThe 749mm focal length and f\/7 ratio provide an ideal image scale for a vast range of deep-sky objects, from the spiral arms of the Andromeda Galaxy (M31) to the turbulent structures within the Orion Nebula (M42). The two ED glass elements in the objective lens suppress chromatic aberration, rendering stars as sharp, color-pure points. This optical system is engineered to deliver high-contrast images that retain fine detail, even when using modern high-resolution astronomy cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 6.9kg Imaging Platform with 300mm Vixen Plate\u003c\/h3\u003e\n\u003cp\u003eEngineered for stability, the Askar 107PHQ weighs 5.7kg as an OTA and 6.9kg fully equipped with its included tube rings, handle, and 300mm Vixen-style dovetail plate. This manageable weight makes it compatible with a wide range of mid-sized equatorial mounts. The retractable dew shield allows the scope to shrink to a compact 603mm for transport, extending to 754mm to block stray light and prevent dew formation during long imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVersatile Connectivity from M86 to M48\u003c\/h3\u003e\n\u003cp\u003eThe 107PHQ includes a comprehensive set of four adapters to connect virtually any imaging device. The focuser terminates in a native M86×1 thread, which can be stepped down using the included rings to M68×1, M54×0.75, M52×0.75, and finally to the universal M48×0.75 thread used by most T-rings and dedicated astronomy cameras. The final M48 adapter is also threaded to accept standard 2-inch filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 107PHQ vs. Triplet + Flattener: The Integrated Advantage\u003c\/h3\u003e\n\u003cp\u003eAn imager considering a traditional 100-110mm APO triplet must also purchase a separate, matched field flattener. This introduces complexity, potential for tilt, and critical back-focus spacing requirements that can change with filters or other accessories.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor's Advantage:\u003c\/strong\u003e A triplet with a separate flattener\/reducer offers more flexibility in focal length. You can image at the native focal length or a reduced, faster focal ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 107PHQ's Advantage:\u003c\/strong\u003e The 107PHQ offers perfect, factory-set field correction out of the box. There is zero chance of spacing errors, and the rigid, integrated design minimizes potential tilt, resulting in a more reliable and frustration-free imaging experience, especially for those new to the hobby.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"PHQ\" in Askar 107PHQ mean for my astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \"PHQ\" signifies a \u003cstrong\u003equadruplet Petzval-style optical design\u003c\/strong\u003e with a built-in field flattener. This means you do not need to buy a separate flattener or worry about calculating back-focus distance. You simply attach your camera and the entire 44mm image circle is corrected for sharp, flat-field images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar 107PHQ fully illuminate my full-frame camera sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar 107PHQ is designed with a corrected \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, which is large enough to cover standard full-frame sensors (typically 43.3mm diagonal) without vignetting or distorted stars at the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 107PHQ perform on a target like the Triangulum Galaxy (M33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 749mm focal length of the Askar 107PHQ is an excellent match for large galaxies like M33. Paired with a full-frame or APS-C camera, it will frame the galaxy beautifully, with enough image scale to resolve individual HII regions and the delicate spiral arm structure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the 6.9kg Askar 107PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of 6.9kg (15.2 lbs) including rings and the dovetail plate, the Askar 107PHQ works well on equatorial mounts with a payload capacity of 30 lbs (13.6 kg) or more. This ensures stable tracking for long-exposure astrophotography. Examples include the Sky-Watcher EQ6-R Pro or Celestron AVX.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 107PHQ suitable for visual observation of planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While designed as an astrograph, its APO quadruplet optics provide sharp, high-contrast, and color-free views visually. With a 749mm focal length, you can use high-magnification eyepieces to easily observe the cloud bands of Jupiter, the rings of Saturn, and details on the Moon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters do I need to connect my DSLR to the Askar 107PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 107PHQ includes a set of adapters that terminates in a standard \u003cstrong\u003eM48x0.75 male thread\u003c\/strong\u003e. All you need to add is an M48 T-ring specific to your camera brand (e.g., Canon, Nikon, Sony) to connect your DSLR or mirrorless camera directly to the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e107mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e749mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (with two ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e603mm (dew shield contracted), 754mm (dew shield extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e5.7kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e6.9kg (Including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Thread Adapters\u003c\/td\u003e\n\u003ctd\u003eM86×1 to M68×1, M68×1 to M54×0.75, M54×0.75 to M52×0.75, M52×0.75 to M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinal Adapter Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (with M48 filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Adapters\u003c\/td\u003e\n\u003ctd\u003eFour-piece photographic adapter set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Contents\u003c\/td\u003e\n\u003ctd\u003eA 107PHQ OTA, a pair of tube rings, a handle, an Askar 300mm Vixen dovetail plate, a set of four-piece photographic adapters, a manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 107PHQ OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e300mm Vixen-Style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFour-Piece Photographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_2025_First_Half_Product_Collection_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44968035516701,"sku":"ASK-107PHQ","price":3219.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-107PHQ-1__20124.1657565714.1280.1280.jpg?v=1684348151"},{"product_id":"askar-130phq-f-7-quadruplet-apo","title":"Askar 130PHQ f\/7 Quadruplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e130mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003e1000mm Focal Length at f\/7.7\u003c\/li\u003e\n\u003cli\u003eBuilt-in Field Flattener\u003c\/li\u003e\n\u003cli\u003e60mm Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eTotal Assembled Weight of 13kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 130PHQ f\/7.7 Quadruplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 130PHQ is an astrograph engineered for large-format imaging, integrating a 130mm quadruplet air-spaced APO objective with a native focal length of 1000mm. Its f\/7.7 optical system, which includes two ED glass elements, is designed to deliver a massive 60mm flat-field image circle without requiring an external flattener. This design simplifies your imaging train and ensures pinpoint stars across full-frame and medium-format sensors, all within a robust optical tube assembly that weighs 10.5kg.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e130mm f\/7.7 Quadruplet APO Optics with 2 ED Elements\u003c\/h3\u003e\n\u003cp\u003eThe core of the 130PHQ is its advanced optical design. The 130mm aperture gathers significant light for resolving faint details in galaxies and nebulae, while the 1000mm focal length provides the image scale needed for medium to small-sized deep-sky objects. The quadruplet objective, featuring two extra-low dispersion (ED) glass elements, provides excellent correction of chromatic aberration, eliminating false color and ensuring sharp, high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 60mm Flat-Field Image Circle for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eUnlike conventional refractors that require separate field flatteners and complex backfocus calculations, the 130PHQ has the flattener built directly into the optical design. This Petzval-like configuration produces a natively flat 60mm image circle, large enough to cover full-frame (36x24mm) and even larger medium-format sensors without edge-of-field star distortion or vignetting. You can simply attach your camera using the included adapters, focus, and capture perfectly corrected images from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e13kg Total Weight with Robust Focuser and Adapters\u003c\/h3\u003e\n\u003cp\u003eBuilt for stability, the Askar 130PHQ has an OTA weight of 10.5kg and a total weight of 13kg with the included tube rings and 300mm Losmandy-style dovetail plate. This requires a substantial equatorial mount to carry effectively. The rear of the telescope features a heavy-duty focuser and a comprehensive set of four adapters, stepping down from the native M86x1 thread to M68x1, M54x0.75, and finally a standard M48x0.75 thread for connecting most astronomy cameras and filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 130PHQ vs. 107PHQ: Aperture, Focal Length, and Portability\u003c\/h3\u003e\n\u003cp\u003eThe 130PHQ is the larger sibling to the popular Askar 107PHQ, offering key differences for imagers choosing between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvantage 107PHQ:\u003c\/strong\u003e The 107PHQ is significantly lighter and more portable, making it suitable for smaller, less demanding mounts. Its faster f\/7 focal ratio also allows for slightly shorter exposure times on wide-field targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvantage 130PHQ:\u003c\/strong\u003e The 130PHQ's primary advantage is its 130mm aperture, which provides nearly 50% more light-gathering area than the 107mm objective. This translates to higher resolution and the ability to capture fainter details. Its 1000mm focal length also delivers a tighter field of view, ideal for framing smaller galaxies and planetary nebulae.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate field flattener for the Askar 130PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar 130PHQ is a flat-field astrograph with a built-in corrector lens as part of its quadruplet optical design. It produces a corrected \u003cstrong\u003e60mm image circle\u003c\/strong\u003e without any additional accessories, simplifying your imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size camera sensor can the Askar 130PHQ fully illuminate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 60mm image circle is large enough to cover \u003cstrong\u003efull-frame sensors\u003c\/strong\u003e (like those in DSLRs or dedicated cameras such as the ZWO ASI6200) and even some \u003cstrong\u003emedium-format sensors\u003c\/strong\u003e with excellent correction to the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of equatorial mount is required to use the Askar 130PHQ for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e13kg (28.7 lbs)\u003c\/strong\u003e for the optical tube, rings, and dovetail, plus the additional weight of a guide scope, camera, and other accessories, a mount in the EQ6\/CEM60 class or larger is strongly recommended for stable, long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 1000mm focal length of the Askar 130PHQ affect imaging the Triangulum Galaxy (M33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 1000mm focal length provides excellent image scale for capturing details within M33, such as its spiral arms and HII regions. When paired with a full-frame sensor, you can frame the entire galaxy comfortably, while a smaller APS-C sensor will provide a tighter, more magnified view of its core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my ZWO camera with an M42 thread to the Askar 130PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 130PHQ includes a set of adapters that terminate in a standard \u003cstrong\u003eM48x0.75 male thread\u003c\/strong\u003e. To connect a camera with an M42 \"T-thread,\" you will need a simple M48-to-M42 step-down ring, which is a common and widely available accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 130PHQ suitable for visual observation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile optimized for imaging, the 130PHQ is an excellent visual instrument. Its 130mm APO objective provides sharp, color-free views of the Moon, planets, and bright deep-sky objects. You will need to add a diagonal and eyepieces to use it visually.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e130mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (with two ED glass elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e10.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e13kg (including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e842.5mm to 1061.5mm depending on dew shield and adapter configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Adapters\u003c\/td\u003e\n\u003ctd\u003eM86×1 -\u0026gt; M68×1 -\u0026gt; M54×0.75 -\u0026gt; M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e130PHQ OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar Losmandy 300mm Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e4-Piece Photographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA130_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44968043282717,"sku":"ASK-130PHQ","price":4899.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-130PHQ-Quadruplet-APO__33186.1661624750.1280.1280.jpg?v=1684348250"},{"product_id":"askar-80phq-f-7-quadruplet-apo","title":"Askar 80PHQ f\/7 Quadruplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture\u003c\/li\u003e\n\u003cli\u003e600mm Focal Length (f\/7.5)\u003c\/li\u003e\n\u003cli\u003eQuadruplet APO Optics with 2 ED Elements\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003e3.9kg Optical Tube Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 80PHQ f\/7.5 Quadruplet APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 80PHQ f\/7.5 Quadruplet APO astrograph integrates an 80mm objective and a 600mm focal length to deliver a perfectly flat 44mm image circle without an external corrector. This self-contained optical design includes two ED glass elements and weighs just 3.9kg as an optical tube assembly, or 4.7kg with its included rings and 300mm Vixen dovetail plate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuadruplet APO Optics: A 44mm Flat Field at 600mm\u003c\/h3\u003e\n\u003cp\u003eThe 80PHQ's optical system is a 3+1 quadruplet design with two pieces of extra-low dispersion (ED) glass, engineered to eliminate chromatic aberration. Unlike standard telescopes that require a separate field flattener, the corrector element is built directly into the optical path, ensuring a 44mm image circle that is perfectly flat and corrected right out of the box. This design simplifies your imaging train and removes the need to calculate back focus; simply attach your camera using the included adapters for pinpoint stars across a full-frame sensor.\u003c\/p\u003e\n\u003cp\u003eWith a 600mm focal length and an f\/7.5 focal ratio, the Askar 80PHQ is optimized for capturing detailed views of medium-sized deep-sky objects. It provides the ideal image scale for resolving features in galaxies like the Triangulum Galaxy (M33) or framing intricate nebulae like the Dumbbell Nebula (M27).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Mechanics: A 3.9kg OTA with a 3-inch Focuser\u003c\/h3\u003e\n\u003cp\u003eEngineered for astrophotography, the 80PHQ is both robust and lightweight. The optical tube itself weighs only 3.9kg, and the total package with rings, handle, and Vixen plate comes in at a manageable 4.7kg. This low weight makes it an excellent match for a wide range of portable equatorial mounts without sacrificing stability.\u003c\/p\u003e\n\u003cp\u003eThe instrument features a heavy-duty 3-inch dual-speed rack-and-pinion focuser capable of handling large cameras and filter wheels without flexure. A 360° rotator with a precision scale allows for effortless framing of your target, while the clamshell-style tube rings provide a secure grip that can be adjusted without tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 80PHQ vs. 107PHQ: The 4.7kg Portable Deep-Sky Solution\u003c\/h3\u003e\n\u003cp\u003eWhile the larger Askar 107PHQ is an exceptional instrument, its 5.7kg weight and longer tube can be demanding on mid-size mounts. The Askar 80PHQ delivers the same flat-field, full-frame imaging philosophy of the PHQ series in a significantly more compact and portable package.\u003c\/p\u003e\n\u003cp\u003eAt just 4.7kg fully equipped, the 80PHQ is the clear choice for astronomers who prioritize portability, use lighter-duty mounts, or are looking for a high-end travel scope. You get the same hassle-free, corrected optical system without the demanding weight and size of its larger sibling, making it a versatile performer for both backyard and dark-site imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a field flattener for the Askar 80PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar 80PHQ is a \"flat-field\" astrograph with a built-in corrector lens as part of its quadruplet optical design. It produces a corrected 44mm image circle without any additional accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the back focus of the Askar 80PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou do not need to calculate back focus. The included set of four photographic adapters is designed to place your camera's sensor at the optimal focal plane. Simply connect your M54 or M48 camera to the end of the adapter chain for a sharp, flat field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 80PHQ frame the Pleiades (M45) with an APS-C camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 600mm focal length of the Askar 80PHQ provides an excellent image scale for large star clusters like the Pleiades (M45). With a typical APS-C sensor, you will be able to frame the core of the cluster and its surrounding nebulosity beautifully, resolving individual stars as sharp points to the edge of the frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan my HEQ5 mount handle the Askar 80PHQ for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. With a total weight of only 4.7kg including rings and dovetail, the Askar 80PHQ is well within the capacity of an HEQ5 or similar mid-range equatorial mount for stable, long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different lengths listed for the Askar 80PHQ (450mm vs 480mm) refer to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe length of the telescope depends on which adapter is attached to the rear and the position of the retractable dew shield. The 450mm length is with the 1.25\" eyepiece holder attached and the dew shield retracted, while the 480mm length is with the 4-piece photo adapter set attached and the dew shield retracted. The dew shield provides an additional 90mm of extension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"two ED glass\" in the Askar 80PHQ's objective do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two \u003cstrong\u003eExtra-low Dispersion (ED)\u003c\/strong\u003e glass elements significantly reduce chromatic aberration, which is the color fringing (typically purple or blue halos) seen around bright stars in simpler refractors. This results in sharper stars, higher contrast, and more accurate color rendition in your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO with two ED elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e3.9kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e4.7kg (including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e450mm to 570mm (depending on configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003eM76×1, M68×1, M54×0.75, M48×0.75 (with internal filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 80PHQ OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 300mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e4-Piece Photographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44968051310877,"sku":"ASK-80PHQ","price":2099.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-80PHQ__46044.1678413489.1280.1280.jpg?v=1684348359"},{"product_id":"askar-v-60-80mm-modular-telescope","title":"Askar V 60\/80mm Modular Telescope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture Triplet Air-Spaced APO Objective\u003c\/li\u003e\n\u003cli\u003e360mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/6 Native Focal Ratio\u003c\/li\u003e\n\u003cli\u003eModular design supports optional 80mm objective lens\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus from the M48 adapter\u003c\/li\u003e\n\u003cli\u003eGross weight of 2.8kg including tube rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar V 60\/80mm Modular Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Askar V 60\/80mm Modular Telescope is built around a single, adaptable optical tube that accepts two different objective lenses. The included 60mm f\/6 objective provides a 360mm focal length ideal for wide-field imaging, housed in a tube that measures just 318.5mm long and weighs 2.8kg with rings. This system's core is a triplet air-spaced APO objective with two ED glass elements, ensuring excellent color correction, and is designed for imagers with a standard 55mm back focus distance from its M48 adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOne 318.5mm OTA: Two Interchangeable Objectives\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of the Askar V is its modularity. The main 318.5mm tube assembly serves as the chassis for two interchangeable, high-quality objective lenses: the included 60mm and an optional 80mm. This allows you to reconfigure your telescope's aperture and focal length without needing a second, completely separate instrument, adapting your setup to best suit your target for the night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 60mm f\/6 Triplet APO Platform\u003c\/h3\u003e\n\u003cp\u003eThe primary V60 objective is an air-spaced triplet apochromat with two ED glass elements, delivering sharp, high-contrast images with minimal chromatic aberration. At its native 360mm focal length and f\/6 focal ratio, this configuration is perfectly suited for capturing large swaths of the night sky, such as the expansive nebulosity of the Cygnus Loop or the dense star fields of the Milky Way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptional Correctors from 0.44kg: Reducer, Flattener, and Extender\u003c\/h3\u003e\n\u003cp\u003eTo further enhance its adaptability, the Askar V system includes three dedicated, optional accessories. A focal reducer (0.44kg) shortens exposure times, a flattener (0.48kg) ensures sharp stars across the entire image frame, and an extender (0.46kg) increases magnification for smaller targets. Each corrector is engineered to work with both the 60mm and 80mm objectives, featuring an adjustable mechanism to optimize optical spacing for either aperture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Mechanics and 55mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eDesigned for astrophotography, the Askar V incorporates the mechanical features needed for a rigid and precise imaging train. The rear of the telescope provides both M54x0.75 and M48x0.75 threaded connections, with the M48 adapter providing the industry-standard 55mm of back focus for easy connection of DSLRs, mirrorless, and dedicated astronomy cameras. The system also includes a precision rotator for framing, a multi-function handle, and both 2\" and 1.25\" visual adapters for observational use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Askar V's modular design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar V's primary advantage is its flexibility. Instead of buying two separate telescopes, you can use a single, high-quality chassis and swap between the 60mm objective for wide-field views and the optional 80mm objective for more resolution and light-gathering power on smaller targets. This saves space, weight, and cost while providing two distinct optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I set up my camera with the Askar V for the correct 55mm back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar V provides a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e distance measured from the base of the threads on its M48x0.75 adapter. Most dedicated astronomy cameras with a filter wheel, or a DSLR\/mirrorless camera with a standard M48 T-ring, are designed to meet this 55mm spacing automatically.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Askar V 60mm f\/6 configuration perform on the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 60mm aperture and 360mm focal length are an excellent match for very large targets like the North American Nebula (NGC 7000). Paired with a camera that has an APS-C or larger sensor, this configuration can frame the entire nebula complex in a single shot, making it an ideal wide-field imaging instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar V for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar V comes with both 2\" and 1.25\" adapters, allowing you to use standard diagonals and eyepieces for visual observation. Its high-quality APO optics make it a superb portable telescope for viewing star clusters, the Moon, and brighter nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the three optional accessories for the Askar V?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe three optional accessories adapt the telescope's optical characteristics for different imaging needs:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReducer:\u003c\/strong\u003e Increases the speed of the optical system (lower f-ratio), reducing exposure time and widening the field of view.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlattener:\u003c\/strong\u003e Corrects for field curvature inherent in refractor designs, ensuring stars are sharp from the center to the corners of your image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtender:\u003c\/strong\u003e Increases the telescope's focal length, providing more magnification to capture finer details on smaller objects like galaxies or planetary nebulae.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar V a good choice for imaging the Andromeda Galaxy (M31) with the optional 80mm objective?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the optional 80mm objective would be an excellent choice for the Andromeda Galaxy (M31). When combined with the optional focal reducer, it would provide a wide enough field of view to capture the full extent of the galaxy's spiral arms on a full-frame or APS-C sensor, while the larger aperture would resolve more detail in its dust lanes compared to the 60mm objective.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e360mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Design\u003c\/td\u003e\n\u003ctd\u003eTriplet Air-Spaced APO (with 2 ED elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (OTA only)\u003c\/td\u003e\n\u003ctd\u003e318.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (inc. rings\/plate)\u003c\/td\u003e\n\u003ctd\u003e2.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from M48 adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Adapters\u003c\/td\u003e\n\u003ctd\u003eM54×0.75, M48×0.75 (with 2” filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual Adapters\u003c\/td\u003e\n\u003ctd\u003e2” and 1.25”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Weight (Reducer)\u003c\/td\u003e\n\u003ctd\u003e0.44kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Weight (Flattener)\u003c\/td\u003e\n\u003ctd\u003e0.48kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Weight (Extender)\u003c\/td\u003e\n\u003ctd\u003e0.46kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44968091287837,"sku":"ASK-ASKARV80","price":2611.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-V__51860.1682951859.1280.1280.jpg?v=1684348980"},{"product_id":"askar-103apo-f-6-8-triplet","title":"Askar 103APO f\/6.8 Triplet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e103mm Aperture Triplet Air-Spaced APO Objective\u003c\/li\u003e\n\u003cli\u003e700.4mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/6.8 Native Focal Ratio\u003c\/li\u003e\n\u003cli\u003eIncludes One ED Glass Element for Superb Color Correction\u003c\/li\u003e\n\u003cli\u003eOTA Weight of 4.75kg\u003c\/li\u003e\n\u003cli\u003eGross Weight of 5.5kg with Rings and Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 103APO f\/6.8 Triplet Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 103APO combines a 103mm aperture with a 700.4mm focal length in a triplet air-spaced APO optical design. This f\/6.8 system delivers high-contrast images free of chromatic aberration, weighing 4.75kg as an OTA and extending from 600mm to 711mm with its dew shield. The complete package, including the 290mm Vixen dovetail plate and tube rings, has a gross weight of 5.5kg, providing a stable and adaptable imaging platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e103mm f\/6.8 Triplet APO Optics for Color-Free Imaging\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Askar 103APO is an air-spaced triplet objective lens that includes one element of ED (Extra-low Dispersion) glass. This apochromatic design virtually eliminates false color, ensuring that stars resolve to sharp, high-contrast points without distracting purple or blue halos. The 103mm aperture gathers significant light, allowing you to capture faint details in nebulae and resolve fine structures in galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Focused Build: Baffled Tube \u0026amp; Precision Focuser\u003c\/h3\u003e\n\u003cp\u003eEvery mechanical detail of the 103APO is engineered to maximize image contrast and user convenience. The interior of the main tube is knife-edge baffled and coated with matting paint, while the retractable dew shield is lined with felt to absorb stray light before it can reduce contrast. This ensures a dark background signal, critical for deep-sky astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe instrument features a large, dual-speed rack-and-pinion focuser for precise adjustments, even with heavy camera loads. A 360° rotator with a high-precision scale allows you to perfectly frame your target without rotating your camera and upsetting your cable management. For added flexibility, finder bases are mounted on both sides of the focuser, providing ample room for a guide scope, finder, or other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDetachable Tube Design for Reducers and Binoviewers\u003c\/h3\u003e\n\u003cp\u003eA key feature of the Askar 103APO is its modular, detachable tube. The rear section of the optical tube can be unthreaded and removed, a design that enables two critical capabilities. First, it allows the telescope to reach focus with optional focal reducers, transforming the f\/6.8 system into a much faster wide-field instrument. Second, the shortened light path provides the necessary back-focus for use with binoviewers, offering immersive, three-dimensional visual experiences.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional 0.6x Reducer:\u003c\/strong\u003e Requires removing the rear tube section to achieve a significantly faster focal ratio for wide-field imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional 0.8x Reducer:\u003c\/strong\u003e Shortens the native f\/6.8 focal ratio for wider fields of view and reduced exposure times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional 1x Flattener:\u003c\/strong\u003e Corrects for field curvature without altering the 700.4mm focal length, ensuring sharp stars across the entire imaging sensor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e290mm Vixen Dovetail \u0026amp; Slotted Handle for Superior Balance\u003c\/h3\u003e\n\u003cp\u003eThe Askar 103APO comes equipped with a robust mounting system designed for stability and adaptability. The included 290mm Vixen-style dovetail plate is extra long, providing an extended range of adjustment to perfectly balance the telescope on your equatorial mount, regardless of the camera and accessory payload. The rigid handle not only provides a secure grip but also features a central slot, allowing you to adjust the spacing of the tube rings or mount additional accessories directly to the top of the OTA.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the Askar 103APO's triplet lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar 103APO\u003c\/strong\u003e uses a three-element (triplet) apochromatic lens with one ED glass element. This design provides superior correction for chromatic aberration compared to standard doublet lenses. This means you will see pure star colors and sharp, high-contrast details on planets and deep-sky objects without distracting color fringing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 103APO's 700.4mm focal length frame a large target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt its native 700.4mm focal length, the Askar 103APO provides a medium-field view that is excellent for framing large galaxies like M31 or nebulae like the Lagoon Nebula (M8), especially with full-frame sensors. For an even wider perspective to capture the entire extent of such targets, you can use the optional 0.8x or 0.6x focal reducers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the detachable tube feature on the Askar 103APO work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe rear section of the main optical tube can be unthreaded and removed. This is required when using the optional 0.6x focal reducer, as it shortens the optical path to allow the system to achieve focus at a much faster focal ratio. This feature is a specific engineering solution to enable high-speed, wide-field imaging with the same OTA.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a binoviewer with the Askar 103APO for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The detachable tube design provides the extra back-focus required to bring a binoviewer to focus without needing a Barlow lens or optical corrector. This allows you to enjoy stunning, wide-field stereo views of the Moon, planets, and bright deep-sky objects at the telescope's native magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eUsing the Askar 103APO on a target like the Hercules Cluster (M13), what is the advantage of an optional focal reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the 700.4mm focal length is great for resolving individual stars in the core of the Hercules Cluster (M13), adding an optional reducer (like the 0.8x or 0.6x) offers two main advantages. It widens your field of view to better frame the cluster within its surrounding starfield, and it shortens your exposure times, allowing you to gather more signal in less time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWith a gross weight of 5.5kg, can the Askar 103APO be carried by a mid-range equatorial mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 5.5kg gross weight (including rings and the 290mm dovetail plate) is well within the capacity of most mid-range equatorial mounts, such as those in the EQ6\/CEM40 class. The long dovetail plate makes it easy to achieve perfect balance even when adding a heavy camera, filter wheel, and guide scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e103mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e700.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet Air-Spaced APO (1x ED Glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e4.75 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e5.5 kg (including rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e600mm (dew shield retracted) \/ 711mm (dew shield extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 103APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e290mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_103APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":46370262253853,"sku":"ASK-ASKAPO103","price":1679.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-103APO.png?v=1693160656"},{"product_id":"askar-140apo-f-7-triplet","title":"Askar 140APO f\/7 Triplet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e140mm Aperture\u003c\/li\u003e\n\u003cli\u003e980mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/7 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eAir-Spaced Triplet APO with ED Glass\u003c\/li\u003e\n\u003cli\u003eOTA Weight: 9.2kg\u003c\/li\u003e\n\u003cli\u003e125mm Retractable Rear Tube\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 140APO f\/7 Triplet Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 140APO f\/7 Triplet refractor combines a 140mm aperture with a 980mm focal length for high-resolution planetary and deep-sky observation. Its air-spaced triplet objective, which includes one ED glass element, is housed in an OTA weighing just 9.2kg. The entire package, including tube rings and a 300mm Losmandy plate, comes to 10.9kg and contracts to a portable 735mm for transport.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e140mm f\/7 Triplet APO Optics: High-Contrast Imaging with ED Glass\u003c\/h3\u003e\n\u003cp\u003eThe optical system is built around a 140mm air-spaced triplet objective. By incorporating a low-dispersion ED glass element, the 140APO delivers images with sharp, high-contrast stars and virtually no false color, ensuring accurate color rendition from the brightest stars to the faintest nebulosity. The native 980mm focal length at f\/7 is a versatile starting point, striking a balance between wide-field views of large targets and the image scale needed to resolve detail on planets and smaller galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePortable Engineering: A 10.9kg Scope Measuring Just 735mm\u003c\/h3\u003e\n\u003cp\u003eDespite its large aperture, the Askar 140APO is engineered for field use. The optical tube assembly weighs only 9.2kg and measures 735mm in length with its dew shield retracted, making it manageable for transport and setup. When fully assembled with its included rings and 300mm dovetail plate, the total weight is 10.9kg. The retractable dew shield extends the total length to 870mm, providing excellent stray light and dew protection without compromising its compact storage profile.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging Mechanics: 125mm Retractable Tube for Focus Flexibility\u003c\/h3\u003e\n\u003cp\u003eA key feature of the 140APO is its 125mm retractable rear lens tube, designed to accommodate a wide range of accessories. When contracted, the shortened back focus allows binoviewers to reach focus without the need for a Barlow or optical corrector. When extended, it provides ample back focus for a full imaging train, including a reducer or flattener, off-axis guider, and camera. This mechanical flexibility is managed by a large, dual-speed rack-and-pinion focuser built to handle heavy loads without slipping, complemented by a 360-degree rotator for precise image framing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStable Mounting System: 300mm Losmandy Plate and Integrated Handle\u003c\/h3\u003e\n\u003cp\u003eThe 140APO includes a robust mounting solution right out of the box. The 300mm Losmandy-style dovetail plate is longer than typical plates, providing a greater range of adjustment for balancing the telescope, especially with front- or rear-heavy accessory loads. The CNC-machined tube rings are secured by large, easy-to-use thumb screws, and the 220mm handle features an integrated slot, allowing it to double as a mounting base for a finder or guide scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the Askar 140APO's 125mm retractable rear tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe retractable rear tube provides critical focus flexibility. \u003cstrong\u003eWhen contracted\u003c\/strong\u003e, it shortens the light path, allowing accessories with high in-focus requirements, like binoviewers, to be used without extra optical correctors. \u003cstrong\u003eWhen extended\u003c\/strong\u003e, it provides the necessary back focus distance for full astrophotography trains that include flatteners, reducers, filter wheels, and cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar 140APO be used for visual observing with a binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Thanks to its retractable rear tube design, the Askar 140APO is fully compatible with most binoviewers. By retracting the 125mm tube, you can achieve focus without needing a Barlow lens or optical correcting system, which is a common requirement for refractors that lack this feature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 140APO perform on targets like the Orion Nebula (M42) with its optional 0.8x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the optional 0.8x reducer, the Askar 140APO transforms into a faster f\/5.6 system. This configuration is excellent for large targets like the Orion Nebula (M42), as it provides a wider field of view to capture the entire nebula complex and reduces exposure times by approximately 36%, allowing you to gather more signal in less time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 140APO suitable for imaging Jupiter with a high-frame-rate camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 140mm aperture provides excellent resolving power, and the 980mm native focal length gives you a good starting image scale for planets. For optimal results, you would add a 2x or 3x Barlow lens ahead of your planetary camera to increase the effective focal length and magnify details like Jupiter's Great Red Spot and cloud bands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eGiven the fully-loaded weight of 10.9kg and its length, the Askar 140APO requires a stable equatorial mount with a payload capacity of at least 40-45 lbs (approx. 20 kg) for astrophotography. Mounts in the Celestron CGX, Sky-Watcher EQ6-R Pro, or iOptron CEM40 class are suitable choices to ensure stability and precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat accessories are needed to start imaging with the Askar 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo begin imaging, you will need a field flattener or reducer to ensure sharp stars across the entire frame. Askar offers a dedicated \u003cstrong\u003e1x flattener\u003c\/strong\u003e (maintains the f\/7 focal ratio) and a \u003cstrong\u003e0.8x reducer\/flattener\u003c\/strong\u003e (creates a faster f\/5.6 system). Beyond that, you will need a T-ring for your camera, a stable equatorial mount, and a guiding solution for long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e140mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e980mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (with one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetractable Tube Travel\u003c\/td\u003e\n\u003ctd\u003e125mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e735mm (dew shield contracted) | 870mm (dew shield extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e9.2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e10.9kg (including tube rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\" visual adapters included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e140APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePair of Tube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 300mm Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_140APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":47140030054685,"sku":"ASK-ASKAPO140","price":3499.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-140APO.jpg?v=1700148738"},{"product_id":"askar-185apo-f-7-triplet","title":"Askar 185APO f\/7 Triplet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e185mm Aperture Triplet APO Objective\u003c\/li\u003e\n\u003cli\u003e1295mm Focal Length at f\/7\u003c\/li\u003e\n\u003cli\u003eIncludes one ED Glass Element for Color Correction\u003c\/li\u003e\n\u003cli\u003e95mm Retractable Rear Tube for Binoviewer and Imaging Focus\u003c\/li\u003e\n\u003cli\u003e17.2kg Gross Weight with Rings and 400mm Losmandy Plate\u003c\/li\u003e\n\u003cli\u003eSupports Full-Frame 44mm Image Circle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 185APO f\/7 Triplet Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 185APO delivers the light-gathering and resolving power of a 185mm objective in a remarkably manageable design. Its 1295mm focal length and native f\/7 ratio are corrected by an air-spaced triplet objective containing one ED glass element, ensuring high-contrast views free of false color. Despite its large aperture, the OTA collapses to just 1081mm for transport and weighs 14.9kg, a feat made possible by a 95mm retractable rear lens tube that provides critical focus travel for any accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e185mm f\/7 Triplet APO Optics with ED Glass\u003c\/h3\u003e\n\u003cp\u003eThe optical system is built around a 185mm (7.28\") objective lens, giving it immense light-gathering power for resolving faint galaxies and pulling detail from planetary surfaces. The air-spaced triplet design, which incorporates a key ED (Extra-low Dispersion) glass element, provides apochromatic color correction, ensuring that stars are sharp, white pinpoints without distracting violet halos. At its native 1295mm focal length, the f\/7 ratio strikes a balance between high-magnification capability for small targets and a wide enough field for larger nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e95mm Retractable Tube for Portability and Binoviewers\u003c\/h3\u003e\n\u003cp\u003eA key innovation in the Askar 185APO is its 95mm retractable rear lens tube. This design allows the telescope's overall length to shrink to 1081mm, making it significantly easier to store and transport than fixed-tube refractors of this size. In use, this travel is critical for versatility: contract the tube to achieve focus with accessories that require significant in-travel, such as binoviewers, or extend it to accommodate imaging trains with correctors and cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e3.5-inch Rack \u0026amp; Pinion Focuser with 100mm of Travel\u003c\/h3\u003e\n\u003cp\u003eTo support heavy imaging payloads without flexure, the 185APO is equipped with a massive 3.5-inch dual-speed rack and pinion focuser. This unit features 100mm of precise focusing travel, marked with a high-contrast scale for repeatable settings. The entire assembly terminates in a 360° rotator with a large locking knob, allowing you to frame your target perfectly without rotating your camera and upsetting cable management. Dual finder bases provide flexible mounting options for guide scopes or other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e17.2kg Package with 400mm Losmandy Plate and Handle\u003c\/h3\u003e\n\u003cp\u003eThe Askar 185APO is engineered as a complete, field-ready system. The included tube rings are integrated into a single, rigid assembly, which connects to a 400mm Losmandy-style dovetail plate, ensuring compatibility with most high-capacity equatorial mounts. The total weight of 17.2kg requires a substantial mount, but the long dovetail provides ample room for achieving perfect balance. A matching 400mm handle runs along the top, offering a secure grip and additional mounting points for accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ef\/5.6 Imaging with Optional 0.8x Reducer\u003c\/h3\u003e\n\u003cp\u003eFor astrophotographers, the 185APO is a versatile platform capable of covering a full-frame 44mm image circle. While it performs beautifully at its native f\/7, an optional 0.8x reducer transforms it into a faster f\/5.6 astrograph. This shortened focal ratio captures wide-field targets like the North America Nebula (NGC 7000) more efficiently, significantly reducing required exposure times. For imaging at the native 1295mm focal length, a dedicated 1x flattener is also available to ensure pinpoint stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Askar 185APO a good choice for both visual and imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 185APO's large \u003cstrong\u003e185mm aperture\u003c\/strong\u003e provides high resolution for visual observers, while its triplet APO optics deliver the color fidelity required for imaging. The key feature is the \u003cstrong\u003e95mm retractable rear tube\u003c\/strong\u003e, which allows the scope to reach focus with short-back-focus visual accessories like binoviewers and long imaging trains with equal ease.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 95mm retractable rear tube on the Askar 185APO work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe rear section of the main optical tube can slide in and out by 95mm and is locked in place with a large, secure rudder-style ring. By contracting the tube, you gain the necessary in-travel to bring binoviewers to focus without a Barlow. By extending it, you provide the out-travel needed for imaging trains that include reducers, flatteners, and filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Askar 185APO perform on the Andromeda Galaxy (M31) with the 0.8x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the optional \u003cstrong\u003e0.8x reducer\u003c\/strong\u003e, the focal ratio becomes a faster \u003cstrong\u003ef\/5.6\u003c\/strong\u003e. This wider field of view is ideal for capturing large targets like the Andromeda Galaxy (M31), allowing you to frame the entire galaxy and its companions on a full-frame sensor while benefiting from shorter exposure times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a binoviewer with the Askar 185APO on a target like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e95mm retractable rear tube\u003c\/strong\u003e is specifically designed to accommodate the long optical path of a binoviewer. By fully contracting the tube, you can easily reach focus for high-power, immersive views of planets like Jupiter without needing an optical corrector assembly (OCA) or Barlow lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar 185APO's 17.2kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a gross weight of \u003cstrong\u003e17.2kg (37.9 lbs)\u003c\/strong\u003e plus the weight of your camera and guide scope, you will need a high-payload equatorial mount. A mount rated for at least 50-60 lbs for imaging is recommended to ensure stability and precise tracking. The included \u003cstrong\u003e400mm Losmandy dovetail plate\u003c\/strong\u003e is compatible with most mounts in this class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the optional 1x flattener and the 0.8x reducer for the Askar 185APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1x flattener\u003c\/strong\u003e corrects for field curvature without changing the telescope's native \u003cstrong\u003e1295mm focal length\u003c\/strong\u003e or \u003cstrong\u003ef\/7\u003c\/strong\u003e ratio, making it ideal for imaging smaller targets at high resolution. The \u003cstrong\u003e0.8x reducer\u003c\/strong\u003e also flattens the field but shortens the focal ratio to \u003cstrong\u003ef\/5.6\u003c\/strong\u003e, providing a wider field of view and cutting exposure times by about 36%, which is better for large nebulae and galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e185mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1295mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet Air-Spaced APO with one ED Glass Element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e14.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e17.2 kg (including tube rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1081mm (dew shield contracted) | 1222mm (dew shield extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Retractable Tube Travel\u003c\/td\u003e\n\u003ctd\u003e95mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e185APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 400mm Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAluminum Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_185APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":47140051091741,"sku":"ASK-185APO","price":7391.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-185APO.jpg?v=1700148949"},{"product_id":"askar-71f-quadruplet-flat-field-apo-f-6-9","title":"Askar 71F Quadruplet Flat-Field APO f\/6.9","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e71mm Aperture Quadruplet APO Optical Design\u003c\/li\u003e\n\u003cli\u003e490mm Focal Length at f\/6.9\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener\u003c\/li\u003e\n\u003cli\u003e3.0kg Total Weight with Rings and Dovetail\u003c\/li\u003e\n\u003cli\u003eDual-Speed 2.4-inch Rack \u0026amp; Pinion Focuser with 360° Rotator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 71F Quadruplet Flat-Field APO f\/6.9\u003c\/h2\u003e\n\u003cp\u003eThe Askar 71F integrates a 71mm quadruplet apochromatic objective and a field flattener into a single optical system, delivering a 44mm image circle corrected for full-frame sensors. With a native 490mm focal length (f\/6.9) and a total weight of just 3.0kg including its tube rings, the 71F provides a portable, wide-field imaging solution that eliminates the complexity of calculating back focus for external correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBuilt-in Flattener: A 44mm Full-Frame Corrected Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar 71F is its quadruplet air-spaced APO objective, which includes an ED glass element to suppress chromatic aberration. Unlike conventional doublets or triplets, this design incorporates the flattener directly into the optical path. This provides a flat, corrected 44mm image circle without requiring you to purchase or calculate spacing for a separate corrector, ensuring sharp stars across a full-frame sensor right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Mechanics: 3.0kg Portability and a 360° Rotator\u003c\/h3\u003e\n\u003cp\u003eEngineered for field use, the Askar 71F weighs only 3.0kg fully equipped with its included rings and 230mm Vixen dovetail plate. The 2.4-inch dual-speed rack and pinion focuser provides 50mm of travel and is robust enough to handle modern cooled astronomy cameras without slipping. For precise composition, a 360° rotator is integrated at the rear, allowing you to frame your target perfectly without rotating your camera and cables.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetractable Dew Shield:\u003c\/strong\u003e Reduces the telescope's transport length to as little as 372.5mm for increased portability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Finder Mounts:\u003c\/strong\u003e A slot on the handle and two finder bases on the focuser provide flexible mounting options for guide scopes and other accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Machined Tube:\u003c\/strong\u003e The entire optical tube is CNC machined for durability and features internal matting paint to eliminate stray light reflections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVersatile Connectivity: M64, M54, and M48 Adapters Included\u003c\/h3\u003e\n\u003cp\u003eThe Askar 71F ships with a complete set of photographic adapters to connect your imaging equipment. The rear of the focuser terminates in an M64x0.75 thread, and the included adapters provide M54x0.75 and M48x0.75 outputs. The M48 adapter also includes threads for standard 2-inch filters, allowing you to easily integrate light pollution or narrowband filters into your imaging train without a separate filter wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 71F vs. Traditional APOs: The Value of a Self-Flattened Design\u003c\/h3\u003e\n\u003cp\u003eWhile a standard doublet or triplet refractor may have a lower initial price, it requires a separate field flattener for astrophotography, which adds cost and complexity. The Askar 71F's integrated design offers a distinct advantage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Back Focus Calculation:\u003c\/strong\u003e With a traditional flattener, you must achieve precise 55mm spacing, which can be complicated by filter wheels and off-axis guiders. The 71F is self-flattened; you simply bring the camera to focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost Efficiency:\u003c\/strong\u003e The price of a high-quality, full-frame flattener can be substantial. The 71F includes this correction as part of its native optical design, providing better value and a guaranteed level of optical correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplicity:\u003c\/strong\u003e By eliminating an extra component in the imaging train, the 71F reduces potential points of tilt, flexure, and connection error.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"self-flattened\" mean for my imaging with the Askar 71F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \"self-flattened\" or \"flat-field\" design means the telescope's optics are inherently corrected to produce sharp, point-like stars across the entire image circle without needing an external corrector lens. With the Askar 71F, you do not need to buy a separate field flattener or worry about achieving a specific back focus distance (like 55mm). You just attach your camera with the included adapters and focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar 71F support a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar 71F is specifically designed with a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, which is large enough to fully illuminate the sensors on full-frame DSLR\/mirrorless cameras (e.g., Canon EOS Ra, Sony a7 series) and dedicated full-frame astronomy cameras (e.g., ZWO ASI6200MM\/MC Pro).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 71F frame large targets like the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its 490mm focal length, the Askar 71F is ideal for large deep-sky objects. Paired with a full-frame sensor, it provides a field of view of approximately 4.2° x 2.8°, which can easily frame the entire North American Nebula (NGC 7000) and the neighboring Pelican Nebula (IC 5070) in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is needed for the 3.0kg Askar 71F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 71F's gross weight is only \u003cstrong\u003e3.0kg\u003c\/strong\u003e. This makes it an excellent match for portable star trackers and small equatorial mounts with a payload capacity of 5kg (11 lbs) or more, such as the Sky-Watcher Star Adventurer GTI or iOptron SkyGuider Pro, leaving ample capacity for a guide scope and camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 71F for visual observation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While optimized for imaging, the Askar 71F is also a high-contrast apochromatic refractor for visual use. You can attach a standard 1.25\" or 2\" diagonal to the focuser. Its 490mm focal length makes it a great wide-field instrument for observing large open clusters, the Andromeda Galaxy (M31), and sweeping the Milky Way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the included adapters for the Askar 71F used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 71F comes with a set of adapters to connect various cameras. The main outputs are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54×0.75:\u003c\/strong\u003e Common on larger ZWO and QHY cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48×0.75:\u003c\/strong\u003e The standard for most astronomy cameras and correctors. This adapter also has internal threads for mounting 2-inch filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese allow you to directly connect most dedicated astronomy cameras and DSLRs (with an appropriate T-ring) to the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e71mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e490mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO with one ED element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2.4-inch Dual-Speed Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Threads\u003c\/td\u003e\n\u003ctd\u003eM64×0.75, M54×0.75, M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight (OTA only)\u003c\/td\u003e\n\u003ctd\u003e2.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (with rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e3.0kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Visual, contracted)\u003c\/td\u003e\n\u003ctd\u003e372.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Visual, extended)\u003c\/td\u003e\n\u003ctd\u003e430.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Photo, contracted)\u003c\/td\u003e\n\u003ctd\u003e415mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Photo, extended)\u003c\/td\u003e\n\u003ctd\u003e473.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 71F OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eVixen 230mm Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSet of Photographic Adapters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_71F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":48093955359005,"sku":"ASK-ASAPO71F","price":923.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-71F-1.png?v=1712853195"},{"product_id":"askar-sqa55-55mm-f-4-8-quintuplet-apo","title":"Askar SQA55 55mm f\/4.8 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e55mm Aperture Quintuplet APO Astrograph\u003c\/li\u003e\n\u003cli\u003eFast f\/4.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e264mm Focal Length\u003c\/li\u003e\n\u003cli\u003eCovers a 44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003e14-Blade Aperture with f\/4.8-f\/22 Range\u003c\/li\u003e\n\u003cli\u003eTotal Weight of only 2.18kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA55 55mm f\/4.8 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA55 combines a 55mm quintuplet APO optical design with a fast f\/4.8 focal ratio to illuminate a full-frame 44mm image circle without requiring a separate flattener. Its 264mm focal length is ideal for capturing vast nebulae and galactic structures, while the total instrument weight of just 2.18kg makes it an exceptionally portable imaging solution for travel and lightweight mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull-Frame f\/4.8 Petzval Optics: A 44mm Flat Field\u003c\/h3\u003e\n\u003cp\u003eThe SQA55 is built around a five-element Petzval optical design that corrects for field curvature internally, delivering a flat 44mm image circle sharp to the corners of a full-frame sensor. This integrated design, which includes one ED (Extra-low Dispersion) and one SD (Super ED) glass element, eliminates the need to purchase, space, and configure a separate field flattener, simplifying your imaging train.\u003c\/p\u003e\n\u003cp\u003eThe fast f\/4.8 focal ratio allows you to gather significant signal in shorter exposure times, a critical advantage for mobile imaging setups. At a 264mm focal length, the SQA55 provides a sweeping field of view perfect for framing large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000) in their entirety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDual-Purpose Design: 14 Blades from f\/4.8 to f\/22\u003c\/h3\u003e\n\u003cp\u003eUnlike most dedicated astrographs, the Askar SQA55 incorporates features for high-end terrestrial and wildlife photography. The manual aperture ring adjusts a 14-blade diaphragm, allowing you to stop the lens down from a wide-open f\/4.8 all the way to f\/22. This gives you precise control over depth of field for daytime subjects.\u003c\/p\u003e\n\u003cp\u003eThe 14-blade aperture produces exceptionally smooth, circular out-of-focus highlights (bokeh), adding an artistic quality to terrestrial images that fixed-aperture telescopes cannot achieve. Combined with a close focus distance of just 5m, the SQA55 becomes a versatile telephoto lens for both celestial and earthly subjects. Note that focusing is entirely manual, a trade-off for its robust optical performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompact at 2.18kg: Built for Portability and Easy Integration\u003c\/h3\u003e\n\u003cp\u003eEngineered for imagers on the move, the SQA55 weighs only 1.84kg for the optical tube alone and 2.18kg with its handle and dovetail plate attached. Its compact length of 244mm (with the dew shield retracted) allows it to fit easily into carry-on luggage or a backpack, and it rides comfortably on even the most portable star trackers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Connections:\u003c\/strong\u003e The rear of the scope terminates in M48x0.75 male threads, the standard for connecting most astronomy cameras and DSLR\/mirrorless T-rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55mm Back Focus:\u003c\/strong\u003e The optical design is optimized for the industry-standard 55mm back focus distance, ensuring you can connect your camera via a standard T-ring and achieve perfect spacing without complex calculations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Threads:\u003c\/strong\u003e The objective lens assembly includes M67 filter threads for attaching standard photographic filters, while the M48 rear adapter is also threaded for 2\" astronomy filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar SQA55: Integrated Flat-Field vs. 2-Piece Optical Systems\u003c\/h3\u003e\n\u003cp\u003eChoosing an astrograph often means pairing a primary telescope with a separate, matched flattener or reducer. The SQA55's quintuplet Petzval design offers a compelling alternative by integrating the field-flattening elements directly into the main optics.\u003c\/p\u003e\n\u003cp\u003eThis approach provides a significant advantage in simplicity and reliability. There are no additional accessories to buy, no potential for tilt introduced by extra threaded connections, and no complex back focus calculations to perform. The SQA55 is a complete, flat-field imaging system right out of its included military-grade waterproof case.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of astrophotography is the Askar SQA55 best for with its 264mm focal length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is ideal for wide-field astrophotography. Its 264mm focal length is perfect for capturing large celestial objects, such as the entire Andromeda Galaxy (M31), the North American Nebula (NGC 7000), the Veil Nebula complex, or vast star fields in the Milky Way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect a full-frame DSLR to the Askar SQA55?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a standard M48 T-ring specific to your camera's mount (e.g., Canon EOS, Nikon F, Sony E). The \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is designed with the standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e distance, which is precisely what a DSLR with a T-ring requires. Simply thread the T-ring onto the SQA55's M48 rear adapter, attach your camera, and you are ready to image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar SQA55 be used for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is optically optimized as an imaging astrograph, it can be used for visual observation. You would need to add a 1.25\" or 2\" diagonal and an eyepiece. However, its primary strength is delivering a perfectly flat field for full-frame cameras, a feature that is less critical for visual use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the SQA55's 14-blade aperture useful for daytime photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e14-blade aperture\u003c\/strong\u003e provides two key benefits for terrestrial photography. First, it creates beautifully smooth, circular out-of-focus highlights (bokeh). Second, it allows you to stop down the aperture from f\/4.8 to f\/22, giving you control over depth of field, which is essential for landscape and wildlife photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar SQA55 work well on a portable star tracker like a Sky-Watcher Star Adventurer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. With a total weight of only \u003cstrong\u003e2.18kg\u003c\/strong\u003e (including handle and dovetail), the \u003cstrong\u003eAskar SQA55\u003c\/strong\u003e is well under the payload capacity of most portable star trackers. This makes it an excellent choice for a lightweight, travel-friendly deep-sky imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the SQA55's Petzval design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage of the \u003cstrong\u003eAskar SQA55's\u003c\/strong\u003e Petzval design is its built-in field flatness. Unlike a traditional doublet or triplet refractor that requires a separate, carefully spaced field flattener, the SQA55 corrects for field curvature internally. This simplifies your imaging train, reduces potential tilt, and ensures you get sharp stars across a \u003cstrong\u003e44mm full-frame sensor\u003c\/strong\u003e out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e264mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Petzval APO (1x ED Glass, 1x SD Glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Control\u003c\/td\u003e\n\u003ctd\u003e14 Blades, Adjustable f\/4.8 to f\/22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosest Focus Distance\u003c\/td\u003e\n\u003ctd\u003e5m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocusing Mode\u003c\/td\u003e\n\u003ctd\u003eManual Focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Filter Thread\u003c\/td\u003e\n\u003ctd\u003eM67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e316mm (dew shield extended), 244mm (dew shield retracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (OTA)\u003c\/td\u003e\n\u003ctd\u003e1.84kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Total)\u003c\/td\u003e\n\u003ctd\u003e2.18kg (including handle \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapter\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (with M48x0.75 filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (supports 50-60mm range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar SQA55 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMilitary-Grade Waterproof Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA55_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":48840234533149,"sku":"ASK-ASKSQA55","price":1113.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA55-1.jpg?v=1721238713"},{"product_id":"askar-sqa85-85mm-f-4-8-quintuplet-apo","title":"Askar SQA85 85mm f\/4.8 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e85mm Aperture\u003c\/li\u003e\n\u003cli\u003e408mm Focal Length (f\/4.8)\u003c\/li\u003e\n\u003cli\u003eQuintuplet Petzval APO Optical Design\u003c\/li\u003e\n\u003cli\u003eSupports Full-Frame (44mm) Image Circle\u003c\/li\u003e\n\u003cli\u003e3.64kg OTA Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA85 85mm f\/4.8 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA85 is a dedicated astrograph designed around a 5-element Petzval optical system, delivering a natively flat field at a fast f\/4.8 focal ratio from its 85mm objective. This 408mm focal length instrument incorporates two SD glass elements for superior color correction and illuminates a full-frame image circle without requiring a separate flattener. Weighing just 3.64kg and measuring a compact 403mm with its dew shield retracted, the SQA85 provides a powerful, portable imaging platform for capturing expansive celestial targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eNative f\/4.8 Petzval Optics: A Flat Field for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eThe core of the SQA85 is its quintuplet Petzval APO objective, an integrated design that eliminates the need for a separate field flattener. This f\/4.8 system provides sharp, pinpoint stars across a full-frame sensor right out of the box. The 408mm focal length is ideal for framing large deep-sky objects like the Andromeda Galaxy (M31) or the entire Veil Nebula complex.\u003c\/p\u003e\n\u003cp\u003eTo ensure high-contrast images free of false color, the optical train includes two pieces of SD (Super ED) glass. This corrects for chromatic aberration, rendering stars as neutral white points against a dark sky background, which is critical for both broadband and narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Mechanics: 3.64kg OTA with Versatile M48\/M54\/M68 Adapters\u003c\/h3\u003e\n\u003cp\u003eWith a bare optical tube assembly weight of 3.64kg, the SQA85 is light enough for a wide range of portable tracking mounts, minimizing payload demands while maximizing stability. The physical design is compact, with a total length of just 403mm when the dew shield is contracted, making it easy to transport and store.\u003c\/p\u003e\n\u003cp\u003eFor secure imaging train connections, the SQA85 includes M48, M54, and M68 adapters, allowing you to directly thread your filter wheel, off-axis guider, or camera. The system supports a back focus distance from 40mm to 70mm, with the standard 55mm being the recommended distance for use with most DSLR and dedicated astronomy cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSQA85 Petzval vs. Triplet + Flattener: The Simplicity of an Integrated System\u003c\/h3\u003e\n\u003cp\u003eWhile a traditional triplet refractor combined with a separate field flattener offers modularity, it also introduces complexity and potential sources of error. The primary advantage of the SQA85's integrated quintuplet Petzval design is the elimination of spacing guesswork and potential optical tilt between the objective and the corrector.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriplet + Flattener Trade-off:\u003c\/strong\u003e The main advantage of a modular system is the ability to use the telescope visually without the flattener. However, achieving a perfectly flat field for imaging requires precise, calculated spacing that can be difficult to dial in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar SQA85 Advantage:\u003c\/strong\u003e As a single, factory-optimized system, the SQA85 guarantees flat-field performance. There is only one connection point to worry about—setting your camera sensor at the recommended 55mm back focus. This reduces potential flexure points and simplifies your setup, letting you spend more time imaging and less time troubleshooting star shapes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Quintuplet Petzval design of the Askar SQA85 mean for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eQuintuplet Petzval\u003c\/strong\u003e design means the Askar SQA85 has a built-in field flattener. You do not need to purchase a separate corrector to get sharp, pinpoint stars across a full-frame sensor. It is an integrated imaging system designed to work perfectly right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Askar SQA85?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SQA85 has an optical tube weight of \u003cstrong\u003e3.64kg\u003c\/strong\u003e and a gross weight of \u003cstrong\u003e4.62kg\u003c\/strong\u003e (including tube rings and a dovetail plate). A mid-sized equatorial mount with a payload capacity of 25-30 lbs (11-13 kg) or more, such as a Sky-Watcher HEQ5 or iOptron CEM26, would be an excellent match for stable, long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar SQA85's 408mm focal length perform on large targets like the Andromeda Galaxy (M31) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e408mm focal length\u003c\/strong\u003e is perfectly suited for this scenario. On a full-frame sensor, the Askar SQA85 will frame the entire Andromeda Galaxy (M31), including its satellite galaxies M32 and M110, with ample room to spare. This makes it an ideal instrument for capturing the full extent of large nebulae and galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my camera to the Askar SQA85?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SQA85 includes \u003cstrong\u003eM48, M54, and M68\u003c\/strong\u003e threaded adapters at the rear. The most common connection is the M48x0.75 thread. You simply add the necessary extension tubes to place your camera's sensor at the recommended \u003cstrong\u003e55mm back focus distance\u003c\/strong\u003e from the adapter's flange.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar SQA85's f\/4.8 focal ratio fast enough for narrowband imaging of the Cygnus Loop?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The \u003cstrong\u003ef\/4.8\u003c\/strong\u003e focal ratio is considered very fast for astrophotography. This speed allows you to gather significant signal in a shorter amount of time, which is a major advantage for narrowband imaging of faint targets like the Cygnus Loop. You can capture deep data with shorter sub-exposures compared to a slower f\/6 or f\/7 refractor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the two SD glass elements in the Askar SQA85 objective?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two \u003cstrong\u003eSD (Super ED) glass elements\u003c\/strong\u003e provide excellent chromatic aberration correction. This means that different colors of light are brought to the same focal point, resulting in sharp, high-contrast images without distracting purple or blue halos around bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e408mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Petzval APO (with 2 SD glass elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat \/ Image Circle\u003c\/td\u003e\n\u003ctd\u003eFull-frame (44mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e3.64kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e4.62kg (including tube ring and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e403mm (dew shield contracted) | 439mm (dew shield stretched)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Thread Adapters\u003c\/td\u003e\n\u003ctd\u003eM48, M54, M68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e40mm - 70mm (55mm recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar SQA85 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA85_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":49200813867293,"sku":"ASK-SQA85","price":3353.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA85-1.jpg?v=1727373818"},{"product_id":"askar-sqa106-106mm-f-4-8-quintuplet-apo","title":"Askar SQA106 106mm f\/4.8 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e106mm Aperture\u003c\/li\u003e\n\u003cli\u003ef\/4.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e509mm Focal Length\u003c\/li\u003e\n\u003cli\u003eQuintuplet Petzval APO Optical Design\u003c\/li\u003e\n\u003cli\u003e55mm Image Circle for Medium Format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA106 106mm f\/4.8 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA106 combines a 106mm aperture with a fast f\/4.8 focal ratio, delivering a 509mm focal length ideal for wide-field astrophotography. Its integrated five-element Petzval design, which includes two SD glass elements, produces a corrected 55mm image circle for medium format sensors without requiring a separate flattener. With a gross weight of 8.12kg including its tube rings and dovetail, this Quintuplet APO provides a complete, flat-field imaging solution right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 106mm f\/4.8 Quintuplet APO with 2 SD Elements\u003c\/h3\u003e\n\u003cp\u003eThe core of the SQA106 is its self-flattening Quintuplet Petzval optical system. This five-element design incorporates two pieces of SD (Super ED) glass to achieve apochromatic color correction, suppressing chromatic aberration for high-contrast images with sharp, color-pure stars. The f\/4.8 focal ratio gathers significant light, reducing required exposure times on faint deep-sky objects like the North American Nebula (NGC 7000) or the Heart Nebula (IC 1805).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e55mm Illumination for Medium Format Sensors\u003c\/h3\u003e\n\u003cp\u003eEngineered for large-format imaging, the Askar SQA106 produces a corrected 55mm image circle. This not only covers standard 44mm full-frame sensors with excellent illumination to the corners but is also large enough for many medium format CMOS and CCD cameras. This capability ensures your investment is future-proof as sensor sizes continue to grow, eliminating concerns about vignetting and field curvature on today's largest amateur sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e8.12kg Gross Weight and Imaging-Ready Adapters\u003c\/h3\u003e\n\u003cp\u003eThe SQA106 is built for serious imaging. The optical tube alone weighs 5.82kg, and the complete assembly with tube rings and dovetail plate comes to 8.12kg, requiring a mid-range equatorial mount for stable tracking. The rear of the focuser includes M68, M54, and M48 adapters, providing direct, threaded connections for a wide range of cameras and filter wheels. A flexible back focus range from 48mm to 78mm, with a recommended distance of 55mm, accommodates various imaging train configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSQA106 Petzval Design vs. Triplet + Flattener Systems\u003c\/h3\u003e\n\u003cp\u003eUnlike conventional triplet refractors that require a separate, carefully spaced field flattener, the SQA106's Petzval design has the correction elements built directly into the main optical tube. This offers a significant advantage in simplicity and reliability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed Flat Field:\u003c\/strong\u003e There is no guesswork involved in achieving the correct flattener-to-sensor spacing. The SQA106 is designed to be perfectly flat at its native focal plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Connections:\u003c\/strong\u003e An integrated design means fewer potential points of flexure or tilt in your imaging train compared to adding an external corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-off:\u003c\/strong\u003e The primary trade-off is a lack of modularity. While a triplet can be used with different reducers or flatteners, the SQA106 is optimized for one specific focal length and image circle. For imagers seeking a dedicated, hassle-free wide-field instrument, the SQA106's integrated approach is superior.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat type of equatorial mount is required for the Askar SQA106?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a gross weight of \u003cstrong\u003e8.12kg\u003c\/strong\u003e for the OTA, rings, and dovetail, plus the weight of your camera and guide scope, the total imaging payload will likely be around 10-12kg. A mount with a payload capacity of at least 18kg (40 lbs), such as a Celestron CGEM II or Sky-Watcher EQ6-R Pro, is recommended for stable, long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar SQA106 need a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The SQA106 features a \u003cstrong\u003eQuintuplet Petzval APO\u003c\/strong\u003e optical design, which has the field-flattening elements built directly into the telescope. This provides a corrected, flat field across its 55mm image circle without any additional accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I set the correct back focus for my camera with the SQA106?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar SQA106 supports a back focus range from 48mm to 78mm from the base of the M48 adapter threads. The \u003cstrong\u003erecommended back focus is 55mm\u003c\/strong\u003e, which is standard for most DSLRs with a T-ring and many dedicated astronomy cameras. Simply add spacers as needed to place your camera's sensor at this distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the SQA106's 55mm image circle for a full-frame (44mm) camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing a sensor smaller than the maximum corrected image circle provides significant benefits. With a \u003cstrong\u003e44mm full-frame sensor\u003c\/strong\u003e inside the SQA106's \u003cstrong\u003e55mm image circle\u003c\/strong\u003e, you are imaging with the best-corrected central part of the field. This results in tighter star shapes, more even illumination, and minimal optical aberrations at the extreme corners of your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar SQA106 perform on a large target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SQA106 is exceptionally well-suited for targets like the Andromeda Galaxy (M31). At a \u003cstrong\u003e509mm focal length\u003c\/strong\u003e, it can frame the entire galaxy, including its faint outer arms, on a full-frame sensor. The fast \u003cstrong\u003ef\/4.8 focal ratio\u003c\/strong\u003e will help capture the faint dust lanes and star-forming regions with shorter total integration time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Quintuplet APO with two SD glass elements\" mean for my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis describes the optical design. \u003cstrong\u003e\"Quintuplet\"\u003c\/strong\u003e means there are five lenses. \u003cstrong\u003e\"APO\" (Apochromatic)\u003c\/strong\u003e means it's highly corrected for color fringing. The \u003cstrong\u003e\"two SD glass elements\"\u003c\/strong\u003e are the specific type of low-dispersion glass used to achieve that color correction. The result is high-contrast images with sharp, natural-colored stars without distracting purple or blue halos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e106mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e509mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Petzval APO (2x SD Glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e55mm (Medium Format), covers 44mm (Full Frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Range\u003c\/td\u003e\n\u003ctd\u003e48mm - 78mm (55mm Recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003eM48, M54, M68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e5.82 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (with rings)\u003c\/td\u003e\n\u003ctd\u003e8.12 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e516mm (Retracted) \/ 586mm (Extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar SQA106 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA106_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":49344703267101,"sku":"ASK-SQA106","price":4753.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/dfd18ed2-7af7-44b1-a8f8-aaaaa1b22ac6.png?v=1730997970"},{"product_id":"askar-160apo-f-7-triplet","title":"Askar 160APO f\/7 Triplet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e160mm Aperture Triplet Air-Spaced APO Objective\u003c\/li\u003e\n\u003cli\u003e1120mm Focal Length at f\/7\u003c\/li\u003e\n\u003cli\u003eIncludes One ED Glass Element for Color Correction\u003c\/li\u003e\n\u003cli\u003eRetractable Dew Shield and Rear Tube for Compact Transport\u003c\/li\u003e\n\u003cli\u003e11.4kg OTA Weight (13.6kg with Rings and Plate)\u003c\/li\u003e\n\u003cli\u003eSupports Full-Frame Imaging with a 44mm Image Circle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 160APO f\/7 Triplet Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 160APO delivers the immense light-gathering power of a 160mm aperture combined with the color fidelity of an f\/7 air-spaced triplet objective. Its 1120mm focal length provides the image scale necessary to resolve fine detail on planets and in small galaxies, while the optical design, which includes one ED glass element, ensures high-contrast, apochromatic views. Weighing 13.6kg fully equipped, this telescope is a serious imaging instrument built for observatory-class mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 160mm f\/7 Triplet APO Objective\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the 160APO is its 160mm air-spaced triplet objective. This design uses an ED (Extra-low Dispersion) glass element to minimize chromatic aberration, producing sharp stars with no distracting color fringing. The f\/7 focal ratio strikes a balance between providing a large image scale at 1120mm and maintaining a manageable physical length for mounting and transport.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Retractable Body: 883mm Transport Length and 115mm of Adjustment\u003c\/h3\u003e\n\u003cp\u003eFor an instrument of this aperture, portability is a key engineering challenge. Askar addresses this with a dual-retractable design. The dew shield retracts to shorten the overall length to just 883mm for storage and transport, and extends to 996mm for observing. More critically, the rear lens tube itself offers 115mm of retraction, a crucial feature for balancing the 11.4kg OTA when switching between lightweight eyepieces and heavy, full-frame imaging trains.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging Platform: A 44mm Image Circle for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eThe Askar 160APO is engineered as a capable astrograph. It is designed to produce a 44mm image circle, which is large enough to fully illuminate the sensors of full-frame DSLR, mirrorless, and dedicated astronomy cameras without significant vignetting. This makes it an ideal platform for capturing wide, deep vistas of large nebulae and star fields, taking full advantage of the telescope's 160mm aperture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 160APO vs. Other Large Refractors: Weight and Portability\u003c\/h3\u003e\n\u003cp\u003eWhen considering a refractor of this size, the primary trade-off is aperture versus weight. At a gross weight of 13.6kg with its included 400mm Losmandy plate and rings, the Askar 160APO requires a substantial German equatorial mount. However, its retractable design gives it a significant advantage in portability and setup efficiency compared to fixed-tube refractors of similar focal length, making it a more practical option for imagers who travel to dark sky sites.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat class of mount is required for the Askar 160APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fully dressed weight of \u003cstrong\u003e13.6kg (30 lbs)\u003c\/strong\u003e before adding a camera, guide scope, or other accessories, the Askar 160APO requires a heavy-duty equatorial mount. For stable imaging, you should consider a mount with a payload capacity of at least 50-60 lbs, such as a Sky-Watcher EQ8-R, iOptron CEM70, or larger model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 160APO fully illuminate a full-frame camera sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The optical system is designed to produce a \u003cstrong\u003e44mm corrected image circle\u003c\/strong\u003e. This is large enough to cover a standard 36mm x 24mm full-frame sensor, making it an excellent choice for wide-field astrophotography with cameras like the ZWO ASI6200MM\/MC Pro or a DSLR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 160APO perform on faint details in the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e160mm aperture\u003c\/strong\u003e provides excellent light-gathering capability, allowing you to resolve the faint outer loops of gas and dust in M42. The \u003cstrong\u003e1120mm focal length\u003c\/strong\u003e provides the necessary image scale to clearly separate the four main stars of the Trapezium cluster at the nebula's core, even under moderately good seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the 115mm retractable rear tube on the 160APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e115mm retractable section\u003c\/strong\u003e at the rear of the telescope serves two main purposes. First, it allows for more compact storage. Second, and more importantly, it helps you achieve proper balance on the mount by shifting the center of gravity. This is especially useful when switching between a lightweight visual setup and a heavy imaging train with a filter wheel and off-axis guider.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 1120mm focal length of the 160APO suitable for imaging smaller galaxies like the Whirlpool Galaxy (M51)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e1120mm focal length\u003c\/strong\u003e is well-suited for medium-to-small deep-sky objects. It provides enough magnification to frame M51 and its companion galaxy nicely, allowing you to resolve spiral arm structure and dust lanes, especially when paired with a camera with smaller pixels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the single ED element in the Askar 160APO's triplet lens affect performance?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe single ED glass element in the \u003cstrong\u003eair-spaced triplet objective\u003c\/strong\u003e is crucial for its apochromatic (APO) designation. It works to bring different wavelengths of light to a very close focal point, significantly reducing chromatic aberration (false color). This results in higher contrast and sharper stars compared to a doublet or achromat of the same size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e160mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1120mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (with one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e11.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e13.6kg (including tube rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e883mm (dew shield contracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Extended)\u003c\/td\u003e\n\u003ctd\u003e996mm (dew shield stretched)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Tube Retraction\u003c\/td\u003e\n\u003ctd\u003e115mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\" visual adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e160APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 400mm Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAluminum Carrying Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_160APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":49580263178525,"sku":"ASK-ASKAPO160","price":5383.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-160APO.jpg?v=1737053717"},{"product_id":"askar-sqa70-70mm-f-4-8-quintuplet-apo","title":"Askar SQA70 70mm f\/4.8 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e70mm Aperture\u003c\/li\u003e\n\u003cli\u003e336mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eQuintuplet (5-Element) APO Petzval Optical Design\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eContains Two ED Glass Elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA70 70mm f\/4.8 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA70 combines a 70mm aperture with a fast f\/4.8 focal ratio and 336mm focal length in a self-flattening quintuplet Petzval optical design. Engineered for astrophotography, it uses two ED glass elements to deliver sharp, color-correct stars across a 44mm image circle, fully illuminating full-frame sensors without the need for an additional flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull-Frame f\/4.8 Imaging with a 5-Element Petzval Design\u003c\/h3\u003e\n\u003cp\u003eThe SQA70 is built around a five-element, air-spaced Petzval design that acts as its own field flattener, correcting for field curvature internally. This design produces a flat, coma-free 44mm image circle capable of covering full-frame CMOS and CCD sensors. The inclusion of two ED (Extra-low Dispersion) glass elements ensures chromatic aberration is suppressed, resulting in high-contrast images with sharp, well-defined stars from edge to edge.\u003c\/p\u003e\n\u003cp\u003eThe fast f\/4.8 focal ratio allows you to gather significant signal in shorter exposure times, reducing tracking demands and maximizing data collection on clear nights. This speed makes the SQA70 highly effective for capturing faint, extended nebulosity and dense star fields.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 336mm Focal Length for Wide-Field Astrophotography\u003c\/h3\u003e\n\u003cp\u003eWith a focal length of 336mm, the Askar SQA70 is purpose-built for capturing grand celestial landscapes. This wide field of view is perfectly suited for framing large targets like the Andromeda Galaxy (M31), the North America Nebula (NGC 7000), or the entire Rho Ophiuchi cloud complex in a single shot.\u003c\/p\u003e\n\u003cp\u003eWhile not intended for high-magnification planetary imaging, this focal length is ideal for creating expansive mosaics of the Milky Way or capturing comets with extensive tails. Its compact nature also makes it an excellent choice for portable \"grab-and-go\" imaging setups and as a high-end telephoto lens for terrestrial photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"Quintuplet Petzval\" design of the Askar SQA70 mean for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe quintuplet (5-element) Petzval design is a self-flattening optical system. This means the \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e corrects for field curvature internally, delivering sharp stars across its entire 44mm image circle without requiring a separate field flattener accessory. You can attach your camera directly and achieve a flat field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Askar SQA70 be used with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar SQA70 produces a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, which is large enough to fully illuminate the sensors of full-frame cameras (e.g., Sony a7 series, Canon R series, ZWO ASI6200MM\/MC) without vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of deep-sky objects are a good match for the Askar SQA70's 336mm focal length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 336mm focal length is ideal for large deep-sky objects and regions of the Milky Way. Excellent targets for the Askar SQA70 include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eThe Andromeda Galaxy (M31)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThe North America Nebula (NGC 7000)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThe Rho Ophiuchi Cloud Complex\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eThe Orion Nebula (M42) and its surrounding molecular cloud\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the f\/4.8 focal ratio of the Askar SQA70 benefit astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/4.8\u003c\/strong\u003e focal ratio allows the telescope to collect light very quickly. This means you can use shorter individual exposure times to capture faint details in nebulae and galaxies, which reduces the strain on your mount's tracking accuracy and allows you to gather more data in a single imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar SQA70 suitable for portable, wide-field astrophotography setups?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. With its 70mm aperture and 336mm focal length, the Askar SQA70 is compact and lightweight, making it an excellent choice for portable setups on trackers like the Sky-Watcher Star Adventurer or iOptron SkyGuider Pro, as well as on medium-payload equatorial mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the two ED glass elements in the Askar SQA70?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two \u003cstrong\u003eED (Extra-low Dispersion) glass elements\u003c\/strong\u003e are used to minimize chromatic aberration, also known as color fringing. This ensures that stars are sharp, point-like, and free of distracting purple or blue halos, resulting in higher-contrast and more natural-looking images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e336mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Air-Spaced Petzval APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Glass\u003c\/td\u003e\n\u003ctd\u003e2x ED Elements\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar SQA70 Optical Tube Assembly\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA70_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":49772499599645,"sku":"ASK-SQA70","price":2233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA70-1.jpg?v=1741724065"},{"product_id":"askar-fra400c-72mm-f-5-6-quintuplet-apo","title":"Askar FRA400C 72mm f\/5.6 Quintuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e72mm Aperture Quintuplet APO Optics\u003c\/li\u003e\n\u003cli\u003e400mm Focal Length at f\/5.6\u003c\/li\u003e\n\u003cli\u003eCovers a 44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated 17-Blade Aperture (f\/5.6-f\/22)\u003c\/li\u003e\n\u003cli\u003e2.68kg Optical Tube Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FRA400C 72mm f\/5.6 Quintuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA400C is a 72mm f\/5.6 Quintuplet APO astrograph engineered to deliver a flat, corrected 44mm image circle for full-frame sensors. Its 400mm focal length provides an ideal wide-field perspective, while the Petzval-like optical train, featuring two ED glass elements, requires no additional flattener for sharp stars edge-to-edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFlat-Field f\/5.6 Optics: A 44mm Full-Frame Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the FRA400C is its self-flattening Quintuplet air-spaced APO design. This Petzval-like optical system uses two extra-low dispersion (ED) glass elements to correct for chromatic aberration, producing high-contrast images with no false color. Critically, it delivers a 44mm image circle, fully illuminating full-frame camera sensors without the need for a separate field flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHybrid Astrograph \u0026amp; Telephoto: 17-Blade Aperture from f\/5.6 to f\/22\u003c\/h3\u003e\n\u003cp\u003eUnlike most astrographs, the FRA400C includes a manually adjustable aperture, stopping down from f\/5.6 to f\/22. With 17 aperture blades, it produces exceptionally smooth, circular out-of-focus highlights (bokeh) when used as a daytime telephoto lens. This feature, combined with a 5m closest focus distance, makes it a capable dual-purpose instrument for both celestial and terrestrial photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompact \u0026amp; Adaptable: 2.68kg OTA with M48 Connectivity\u003c\/h3\u003e\n\u003cp\u003eWeighing just 2.68kg for the optical tube alone, and measuring 370mm with the dew shield retracted, the FRA400C is built for portability. At a total weight of 3.18kg with its handle and dovetail, it's an ideal match for lightweight equatorial mounts. The rear of the focuser provides M72, M54, and a standard M48 adapter, ensuring direct connection to most astronomy cameras and DSLRs with a standard 55mm back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar FRA400C vs. FRA400: What Does the \"C\" Mean?\u003c\/h3\u003e\n\u003cp\u003eThe FRA400C is positioned as a more accessible version of the original Askar FRA400 astrograph. While both share the same core 72mm f\/5.6 quintuplet optical design and 400mm focal length, the 'C' model achieves a lower price point through a more streamlined mechanical design. The FRA400C is lighter (2.68kg vs. 2.9kg OTA) and more compact, making it an excellent choice for imagers prioritizing portability and value without compromising on the 44mm flat-field optical performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Askar FRA400C?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e3.18kg (7 lbs)\u003c\/strong\u003e including the handle and dovetail plate, the Askar FRA400C is very lightweight. It works well on portable tracking mounts with a payload capacity of 15-20 lbs or more, such as the Sky-Watcher Star Adventurer GTi or a Celestron Advanced VX.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar FRA400C require a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar FRA400C features a \u003cstrong\u003eQuintuplet Petzval-like optical design\u003c\/strong\u003e that is inherently self-flattening. It is designed to produce a flat field across its 44mm image circle without any additional corrective optics, simplifying your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my full-frame DSLR to the Askar FRA400C?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FRA400C includes an \u003cstrong\u003eM48 adapter\u003c\/strong\u003e. To connect a DSLR, you will need a standard M48 T-ring for your camera brand (e.g., Canon EOS or Nikon). The telescope is designed for a \u003cstrong\u003e55mm back focus distance\u003c\/strong\u003e, which is the standard for DSLRs with their corresponding T-ring, allowing for a direct and simple connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the field of view of the FRA400C on a full-frame camera when imaging the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its \u003cstrong\u003e400mm focal length\u003c\/strong\u003e, the Askar FRA400C on a full-frame sensor (36x24mm) provides a field of view of approximately 5.1° x 3.4°. This is wide enough to comfortably frame the entire North American Nebula (NGC 7000) and the neighboring Pelican Nebula (IC 5070) in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FRA400C for daytime wildlife photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The FRA400C is an excellent dual-purpose lens. Its manual aperture can be stopped down from \u003cstrong\u003ef\/5.6 to f\/22\u003c\/strong\u003e to control depth of field, and the \u003cstrong\u003e17 aperture blades\u003c\/strong\u003e create smooth, pleasing bokeh. The \u003cstrong\u003e5m closest focus distance\u003c\/strong\u003e also makes it viable for capturing distant terrestrial subjects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the adjustable aperture on the FRA400C?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adjustable aperture serves two main purposes. For \u003cstrong\u003eterrestrial photography\u003c\/strong\u003e, it allows you to control exposure and depth of field, just like a standard camera lens. For \u003cstrong\u003eastrophotography\u003c\/strong\u003e, while you'll typically shoot wide open at f\/5.6 for maximum light gathering, stopping down can be used to sharpen bright stars or create diffraction spikes for artistic effect, particularly on bright targets like the stars in the Pleiades (M45).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e72mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet dual ED air-spaced APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Blades\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Range\u003c\/td\u003e\n\u003ctd\u003ef\/5.6 - f\/22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosest Focus Distance\u003c\/td\u003e\n\u003ctd\u003e5m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocusing Mode\u003c\/td\u003e\n\u003ctd\u003eManual Focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Filter Diameter\u003c\/td\u003e\n\u003ctd\u003eM82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2.68kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e3.18kg (including handle \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e370mm (including dew shield), 420mm (without dew shield)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003eM72, M54, M48 (with M48×0.75 filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm recommended (supports 50-60mm range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\"\/2\" Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_FRA400C_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":49856589168925,"sku":"ASK-FRA400C","price":1253.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-FRA400C-1.jpg?v=1743617369"},{"product_id":"askar-80ed-f-7-doublet","title":"Askar 80ED f\/7 Doublet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e560mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/7 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eTriplet Objective with ED Glass\u003c\/li\u003e\n\u003cli\u003eAPS-C Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003e55mm Back Focus\u003c\/li\u003e\n\u003cli\u003e0.42kg Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 80ED f\/7 Doublet\u003c\/h2\u003e\n\u003cp\u003eThe Askar 80ED f\/7 is built around a 560mm focal length triplet objective that incorporates one ED glass element for well-corrected images. It delivers a corrected image circle optimized for APS-C sensors and provides a standard 55mm of back focus from its M48x0.75 male thread. The entire optical system weighs just 0.42kg, establishing a highly portable core for a grab-and-go astrophotography rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTriplet ED Optics: 560mm Focal Length at f\/7\u003c\/h3\u003e\n\u003cp\u003eThe heart of the Askar 80ED is its air-spaced triplet objective lens, which includes an element of extra-low dispersion (ED) glass to minimize chromatic aberration. This design ensures that stars of different colors focus at the same point, resulting in sharp, high-contrast images without distracting color fringing around bright objects. The native 560mm focal length at f\/7 provides an ideal image scale for many popular deep-sky targets, from open clusters to larger nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging Train: 55mm Back Focus for APS-C Sensors\u003c\/h3\u003e\n\u003cp\u003eAskar engineered the 80ED for straightforward camera integration. The system provides a 55mm back focus distance measured from the base of the M48x0.75 thread, which is the industry standard for DSLR and mirrorless cameras when used with a corresponding T-ring. The corrected image circle is sized for APS-C sensors, covering the chips used in a vast majority of dedicated astronomy cameras and consumer DSLRs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Threads:\u003c\/strong\u003e The rear of the OTA terminates in both M54×0.75 and M48×0.75 threads, providing flexibility for connecting various accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Filter Holder:\u003c\/strong\u003e The M48 connection includes internal threads, allowing you to mount standard 2-inch filters directly into the imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPS-C Limitation:\u003c\/strong\u003e While the image circle fully illuminates APS-C sensors, it is not designed for full-frame (35mm) sensors and will show significant vignetting at the edges of a larger format.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSystem Modularity: A Lightweight 0.42kg Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eWeighing only 0.42kg, the Askar 80ED is exceptionally lightweight, making it a perfect match for portable tracking mounts that have limited payload capacity. This instrument is designed as the core of a flexible imaging system, with optional, dedicated focal reducers and flatteners available separately. These accessories allow you to alter the focal ratio for faster imaging and a wider field of view, adapting the telescope's performance to different celestial targets without compromising image quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of astronomical objects is the Askar 80ED best suited for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its 560mm focal length, the Askar 80ED excels at imaging medium-to-large deep-sky objects. It's ideal for targets like the Andromeda Galaxy (M31), the Orion Nebula (M42), and large open star clusters like the Pleiades (M45), framing them well on a typical APS-C sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 80ED support full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Askar 80ED is designed with a corrected image circle specifically for \u003cstrong\u003eAPS-C sensors\u003c\/strong\u003e. While a full-frame camera can be attached, you will experience significant vignetting and distortion in the corners of the image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to connect my DSLR camera to the Askar 80ED?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 80ED provides a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e from its M48 thread. To connect a DSLR or mirrorless camera, you will need a standard M48 T-ring specific to your camera's lens mount (e.g., Canon EOS or Nikon F).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 80ED a good choice for imaging the North America Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, especially when paired with an optional focal reducer. At its native 560mm focal length, you can capture detailed sections of the nebula. Adding a reducer provides a wider field of view, allowing you to fit the entire nebula and the adjacent Pelican Nebula (IC 5070) into a single frame with an APS-C sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 80ED for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Askar 80ED is optically optimized for astrophotography, it can certainly be used for visual astronomy. You will need to add a diagonal, an eyepiece holder, and eyepieces. Its ED triplet lens will provide sharp, high-contrast views of the Moon, planets, and bright deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow portable is the Askar 80ED for field use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eExtremely portable. With a specified weight of just \u003cstrong\u003e0.42kg\u003c\/strong\u003e, the Askar 80ED is one of the lightest telescopes in its class. This makes it an ideal companion for lightweight star trackers and portable equatorial mounts for imaging sessions away from home.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTriplet with one ED glass element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e560mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003eAPS-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from the base of M48 male thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.42 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Threads\u003c\/td\u003e\n\u003ctd\u003eM54×0.75 and M48×0.75 (with internal M48 filter threads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_80ED_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":50045859987741,"sku":"ASK-ASF80ED","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-80ED-Doublet-1.jpg?v=1749240259"},{"product_id":"askar-120apo-f-7-triplet","title":"Askar 120APO f\/7 Triplet","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e120mm Aperture Triplet Air-Spaced APO Objective\u003c\/li\u003e\n\u003cli\u003eIncludes one ED Glass Element for Superb Color Correction\u003c\/li\u003e\n\u003cli\u003e840mm Focal Length at a Native f\/7 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eLightweight 6.5 kg Total Weight with Rings and Plate\u003c\/li\u003e\n\u003cli\u003eSupports a 44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003e3.3-inch Dual-Speed Rack \u0026amp; Pinion Focuser with 360° Rotator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 120APO f\/7 Triplet Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 120APO f\/7 Triplet refractor combines a 120mm aperture with an 840mm focal length in an optical tube assembly weighing just 6.5 kg with its rings and dovetail plate. Its air-spaced triplet objective, which includes one element of ED glass, delivers high-contrast, color-pure images across a 44mm image circle, making it a powerful and portable instrument for full-frame astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e120mm f\/7 Triplet APO Optics: Light Gathering and Color Correction\u003c\/h3\u003e\n\u003cp\u003eThe core of the 120APO is its 120mm air-spaced triplet objective. This design leverages an ED (Extra-low Dispersion) glass element to sharply minimize chromatic aberration, ensuring stars are tight, color-fringing is suppressed, and contrast on planetary and deep-sky targets is maximized. At f\/7, the 840mm focal length provides the ideal image scale for resolving details in medium-to-large galaxies and planetary nebulae without demanding perfect seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEngineered for Portability: A 6.5 kg Imaging Platform\u003c\/h3\u003e\n\u003cp\u003eAskar designed the 120APO for field use, keeping the total weight to an impressively low 6.5 kg. Thoughtful mechanical features enhance its portability and ease of use, from the retractable dew shield that shortens its length to 722mm for transport to the dual finder bases that provide mounting flexibility. The included 290mm Vixen-style dovetail plate is extended to make balancing the OTA with a full imaging train a straightforward process on most equatorial mounts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Focuser: 3.3-inch Dual-Speed with 360° Rotation\u003c\/h3\u003e\n\u003cp\u003eTo handle the demands of modern imaging cameras, the Askar 120APO is equipped with a robust 3.3-inch dual-speed rack and pinion focuser. This heavy-duty focuser provides 10 cm of precise travel, eliminating sag and tilt even with heavy camera and filter wheel combinations. A 360° rotator with a high-precision scale allows you to frame your target perfectly without rotating your entire imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDual-Speed Imaging: Native f\/7 or Fast f\/5.6 with Optional Reducer\u003c\/h3\u003e\n\u003cp\u003eThe 120APO offers exceptional flexibility for astrophotographers. With the optional 1x flattener, it operates at its native 840mm focal length and f\/7 ratio, delivering a perfectly flat field for large sensors. For wider targets, the optional 0.8x reducer transforms the telescope into a fast f\/5.6 astrograph, capturing expansive nebulae like the North American Nebula (NGC 7000) with significantly shorter exposure times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 120APO vs. 103APO: Aperture and Imaging Scale\u003c\/h3\u003e\n\u003cp\u003eFor imagers deciding between Askar's APO refractors, the primary difference is light-gathering power and resolution. The 120APO's aperture provides a 36% larger light-collecting area than the 103APO. This directly translates to brighter images, shorter required exposure times for faint targets, and a higher theoretical resolution limit, allowing you to resolve finer details in globular clusters and galactic structures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of astronomical mount is needed for the Askar 120APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e6.5 kg\u003c\/strong\u003e for the OTA, rings, and plate, the Askar 120APO requires a stable equatorial mount. For imaging, a mount in the EQ6-R Pro or CEM40 class is recommended to handle the telescope plus the additional weight of a camera, guide scope, and other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the optional 0.8x reducer affect imaging the Andromeda Galaxy (M31) with the Askar 120APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 0.8x reducer shortens the focal ratio to \u003cstrong\u003ef\/5.6\u003c\/strong\u003e and the focal length to approximately 672mm. This creates a wider field of view, allowing you to more easily fit the entire Andromeda Galaxy and its satellite galaxies (M32 and M110) into the frame of a full-frame sensor. The faster focal ratio also reduces exposure times by about 36% compared to imaging at the native f\/7.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 120APO suitable for visual use with a binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar 120APO features a detachable lens tube segment. This design allows you to shorten the optical path, providing the necessary back focus to reach focus with most binoviewers without needing a barlow or optical corrector assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the maximum camera sensor size for the Askar 120APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 120APO is designed to fully illuminate a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e when used with its dedicated 1x flattener or 0.8x reducer. This makes it an excellent match for cameras with full-frame (36x24mm) sensors, providing corrected, unvignetted stars across the entire field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 120APO for high-magnification views of Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. As a \u003cstrong\u003e120mm apochromatic refractor\u003c\/strong\u003e, its high-contrast, color-free optics are ideal for planetary observation. Using a high-quality Barlow lens and a short focal length eyepiece, you can easily push the magnification to see fine details like the cloud bands of Jupiter, the Great Red Spot, and the Cassini Division in Saturn's rings under steady seeing conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the dual finder bases on the Askar 120APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual finder bases provide flexibility. You can mount a finder scope on one side and a guide scope on the other, or mount other accessories like a small computer or autofocuser controller. This eliminates the need to disassemble and move a single base when reconfiguring your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e120mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e840mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (including one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e5.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (w\/ Rings \u0026amp; Plate)\u003c\/td\u003e\n\u003ctd\u003e6.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Dew Shield Contracted)\u003c\/td\u003e\n\u003ctd\u003e722mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Dew Shield Stretched)\u003c\/td\u003e\n\u003ctd\u003e804mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Adapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 120APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 290mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_120APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":50290226561309,"sku":"ASK-ASKAPO120","price":2379.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-120APO-Refractor-1.jpg?v=1756176065"},{"product_id":"askar-50p-f-3-8-quadruplet-apo-telescope","title":"Askar 50P f\/3.8 Quadruplet APO Telescope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e50mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003eUltra-Fast f\/3.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e190mm Focal Length\u003c\/li\u003e\n\u003cli\u003eNatively Flat Field for APS-C Sensors\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus Requirement\u003c\/li\u003e\n\u003cli\u003eCompact 147mm Length and 1.4kg Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 50P f\/3.8 Quadruplet APO Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Askar 50P f\/3.8 Quadruplet APO Telescope combines a 50mm aperture with a fast 190mm focal length for ambitious wide-field imaging. Its quadruplet Petzval optical design delivers a natively flat field suitable for up to APS-C format sensors, while its compact 147mm length and 1.4kg weight make it the definitive grab-and-go astrograph.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUltra-Fast f\/3.8 Quadruplet APO Optics\u003c\/h3\u003e\n\u003cp\u003eAt f\/3.8, the Askar 50P gathers light dramatically faster than typical refractors, allowing you to capture deep signal on faint nebulae in a fraction of the time. The quadruplet Petzval design, which includes one piece of SD glass, corrects for chromatic aberration and field curvature without the need for an additional flattener, ensuring sharp, color-pure stars across the entire frame.\u003c\/p\u003e\n\u003cp\u003eThe 190mm focal length produces an expansive field of view, perfect for framing large celestial canvases. Targets like the Andromeda Galaxy (M31), the North American Nebula (NGC 7000), and the vast Rho Ophiuchi cloud complex fit comfortably within the frame of a modern APS-C sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFlat-Field Imaging for APS-C with 55mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eThe Askar 50P is engineered for seamless camera integration. The optical system is optimized for 1-inch sensors but provides excellent correction for larger APS-C formats, delivering a corrected image circle without the complexity of calculating spacing for a separate reducer or flattener. This simplifies your imaging train and eliminates potential sources of tilt.\u003c\/p\u003e\n\u003cp\u003eConnection is made via a standard M48 adapter, requiring a common 55mm back focus. This is compatible with most dedicated astronomy cameras and DSLR\/mirrorless cameras using a standard M48 T-ring. The focuser also supports a back focus range from 50mm to 65mm, offering flexibility for unique imaging setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompact and Lightweight at 1.4kg for Grab-and-Go Imaging\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, the Askar 50P weighs just 1.4kg and measures a mere 147mm with its dew shield retracted. This minimal footprint makes it an ideal companion for lightweight star trackers and portable mounts, allowing you to set up a powerful imaging rig far from city lights without hauling heavy equipment.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSliding Dew Shield:\u003c\/strong\u003e The integrated dew shield extends to 182mm, providing excellent protection from stray light and moisture during long imaging sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Construction:\u003c\/strong\u003e Despite its small size, the telescope is built for rigidity, ensuring the optical elements remain perfectly collimated from your backyard to a remote dark-sky site.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 50P vs. RedCat 51: Focal Ratio and Field of View\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a portable astrograph, the primary competitor to the Askar 50P is the William Optics RedCat 51. While both are excellent Petzval designs, they serve different imaging goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor Advantage (RedCat 51):\u003c\/strong\u003e The RedCat offers a slightly larger 51mm aperture and a longer 250mm focal length. This provides a tighter field of view and more image scale, which can be beneficial for framing smaller deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 50P Advantage:\u003c\/strong\u003e The 50P's key advantage is its f\/3.8 focal ratio, which is significantly faster than the RedCat's f\/4.9. This allows for roughly 68% more light gathering in the same amount of time, drastically reducing required exposure times. Its 190mm focal length also captures a wider true field of view, ideal for the largest nebulae and mosaics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYour choice depends on your primary targets. For the widest possible vistas and the shortest possible exposures, the Askar 50P is the superior instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a field flattener for the Askar 50P telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar 50P uses a \u003cstrong\u003equadruplet Petzval optical design\u003c\/strong\u003e, which has a built-in corrector. It produces a natively flat field suitable for up to APS-C sensors without requiring any additional flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Askar 50P's f\/3.8 focal ratio?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \u003cstrong\u003ef\/3.8 focal ratio\u003c\/strong\u003e is extremely fast, allowing the telescope to collect a large amount of light in a short period. This means you can use shorter sub-exposures to capture faint details in nebulae and galaxies, reducing issues with guiding, tracking, and changing sky conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the correct back focus for the Askar 50P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe recommended back focus is \u003cstrong\u003e55mm\u003c\/strong\u003e from the base of the rear M48 threads. This is the standard distance for most dedicated astronomy cameras and for DSLR\/mirrorless cameras when using a compatible T-ring. The system supports a total range of 50mm to 65mm for added flexibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of camera sensor is the Askar 50P designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 50P provides a corrected image circle that supports \u003cstrong\u003eAPS-C format sensors\u003c\/strong\u003e and is specifically optimized for 1-inch sensors. This makes it compatible with a wide range of popular CMOS astronomy cameras and many DSLR\/mirrorless models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required to image with the Askar 50P?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a gross weight of only \u003cstrong\u003e1.4kg\u003c\/strong\u003e, the Askar 50P is exceptionally lightweight. It can be carried easily by compact, portable tracking mounts like the Sky-Watcher Star Adventurer or iOptron SkyGuider Pro, making it an ideal choice for a travel imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 50P's 190mm focal length suitable for large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, perfectly. The \u003cstrong\u003e190mm focal length\u003c\/strong\u003e provides a very wide field of view that is ideal for framing enormous targets. With an APS-C sensor, you can easily capture the full expanse of the Andromeda Galaxy (M31), the North American Nebula (NGC 7000), or the Veil Nebula complex in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e190mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet Petzval APO (with one SD glass element)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003eSupports APS-C format (optimized for 1-inch sensors)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Dew Shield Contracted)\u003c\/td\u003e\n\u003ctd\u003e147mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Dew Shield Stretched)\u003c\/td\u003e\n\u003ctd\u003e182mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e1.4kg (including tube ring and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-end Thread\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm Recommended (50-65mm range supported)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 50P OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":50980013900061,"sku":"ASK-50P","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-50P-Quadruplet-Telescope-1.jpg?v=1772217458"},{"product_id":"askar-sqa60-pro-60mm-f-4-6-sextuplet-apo","title":"Askar SQA60 Pro 60mm f\/4.6 Sextuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture Sextuplet APO Optics\u003c\/li\u003e\n\u003cli\u003e276mm Focal Length at a Fast f\/4.6\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Petzval Design with 2 SD Glass Elements\u003c\/li\u003e\n\u003cli\u003e3.54kg Gross Weight with Rings and Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA60 Pro 60mm f\/4.6 Sextuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA60 Pro integrates a 60mm sextuplet APO optical system into a compact tube, delivering a 276mm focal length at a fast f\/4.6. Its Petzval design, incorporating two SD glass elements, produces a corrected 44mm image circle for full-frame sensors, all within a 283mm-long OTA weighing just 2.79kg.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSextuplet Petzval Optics: A 44mm Flat Field at f\/4.6\u003c\/h3\u003e\n\u003cp\u003eThe SQA60 Pro's optical core is a six-element Petzval apochromat, engineered to deliver a flat field across a 44mm image circle without an external flattener. This integrated design uses two pieces of Super-low Dispersion (SD) glass to ensure sharp, high-contrast stars with negligible chromatic aberration, even on bright targets. The native f\/4.6 focal ratio gathers significant light quickly, reducing sub-exposure times needed to capture faint details in nebulae like the North American Nebula (NGC 7000) or the Heart Nebula (IC 1805).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Mechanics: 3.54kg Gross Weight and 41-66mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability and stability, the SQA60 Pro has a gross weight of 3.54kg with its tube ring and dovetail, making it a perfect match for lightweight tracking mounts. The telescope's rear M48 adapter includes standard M48x0.75 filter threads and supports a flexible back focus distance from 41mm to 66mm. This range accommodates a wide variety of cameras, filter wheels, and off-axis guiders, with a recommended spacing of 55mm for optimal performance with most standard imaging trains.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSQA60 Pro: Eliminating the 2-Part Doublet + Flattener System\u003c\/h3\u003e\n\u003cp\u003eUnlike a conventional refractor that requires a separate, carefully spaced flattener, the SQA60 Pro's sextuplet design corrects for field curvature internally. This single-tube solution removes the potential for tilt and spacing errors that can compromise a two-part optical system. The trade-off for this guaranteed performance is a fixed focal length; however, for wide-field imagers seeking a reliable, grab-and-go instrument, the SQA60 Pro's integrated approach is a significant advantage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of targets is the Askar SQA60 Pro's 276mm focal length best for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA60 Pro\u003c\/strong\u003e, with its 276mm focal length, is ideal for large deep-sky objects and wide star fields. It can frame massive targets like the Andromeda Galaxy (M31), the entire Veil Nebula complex, or the Rho Ophiuchi cloud complex in a single shot using a full-frame camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I set the correct back focus for my camera with the Askar SQA60 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA60 Pro\u003c\/strong\u003e supports a back focus range of \u003cstrong\u003e41mm to 66mm\u003c\/strong\u003e from the M48 thread. The recommended distance is \u003cstrong\u003e55mm\u003c\/strong\u003e, which is the standard for most DSLR\/mirrorless cameras with a T-ring and many dedicated astronomy cameras. You simply add or remove spacers in your imaging train to achieve this distance for optimal star shapes across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar SQA60 Pro require a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eAskar SQA60 Pro\u003c\/strong\u003e features an integrated sextuplet Petzval optical design. This means the field-flattening elements are built directly into the main telescope tube, so it produces a flat field out of the box without needing any additional corrective optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use full-frame cameras with the Askar SQA60 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The telescope is designed to fully illuminate and correct a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, making it perfectly compatible with full-frame (36x24mm) sensors. You will not experience significant vignetting or distorted stars at the edge of a full-frame sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size mount do I need for the 3.54kg Askar SQA60 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fully loaded weight of \u003cstrong\u003e3.54kg\u003c\/strong\u003e (plus your camera and guide scope), the \u003cstrong\u003eAskar SQA60 Pro\u003c\/strong\u003e is well-suited for portable tracking mounts in the 10-15kg payload class. Mounts like the Sky-Watcher HEQ5, iOptron CEM26\/GEM28, or similar models will provide excellent stability for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar SQA60 Pro's f\/4.6 ratio affect my exposure times?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/4.6 focal ratio\u003c\/strong\u003e allows the \u003cstrong\u003eAskar SQA60 Pro\u003c\/strong\u003e to collect light much faster than a typical f\/6 or f\/7 refractor. This means you can use shorter sub-exposures to capture the same amount of detail, which helps minimize issues with tracking errors, satellites, and changing sky conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e276mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eSextuplet Petzval APO (includes 2 SD glass elements)\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\u003e283mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2.79kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e3.54kg (including tube ring and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-end Thread\u003c\/td\u003e\n\u003ctd\u003eM48 Adapter (with M48×0.75 filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Distance\u003c\/td\u003e\n\u003ctd\u003e41mm - 66mm range (55mm recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSQA60 Pro OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA60_Pro_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":51314874220829,"sku":"ASK-SQA60","price":1792.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA60-Sextuplet-Refractor-6.jpg?v=1779373604"},{"product_id":"askar-n160-f-3-6-newtonian","title":"Askar N160 f\/3.6 Newtonian","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e160mm Aperture Parabolic Mirror\u003c\/li\u003e\n\u003cli\u003ef\/3.4 Focal Ratio with Included 0.95x Corrector\u003c\/li\u003e\n\u003cli\u003e544mm Corrected Focal Length\u003c\/li\u003e\n\u003cli\u003eCarbon Fiber Tube Construction\u003c\/li\u003e\n\u003cli\u003e3.97kg Optical Tube Assembly Weight\u003c\/li\u003e\n\u003cli\u003eDesigned for APS-C (28mm) Image Circles\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus from M48 Threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar N160 f\/3.6 Newtonian Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar N160 f\/3.6 Newtonian combines a 160mm parabolic primary mirror with an included 0.95x triplet coma corrector to create an exceptionally fast f\/3.4, 544mm focal length imaging system. Weighing just 3.97kg, the carbon fiber optical tube is optimized for deep-sky astrophotography with APS-C format sensors, delivering a 0.73\" theoretical resolution. The integrated corrector provides a standard 55mm back focus from its M48x0.75 threads, simplifying camera and accessory integration for capturing wide-field targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFast f\/3.4 Imaging: 160mm Aperture with a 0.95x Corrector\u003c\/h3\u003e\n\u003cp\u003eThe optical system is built for speed and light-gathering power. The 160mm primary mirror collects significant signal, while the f\/3.4 corrected focal ratio allows you to capture faint details in nebulae and galaxies with shorter sub-exposure times. This reduces demands on your mount's tracking accuracy and allows more data to be collected in a single session.\u003c\/p\u003e\n\u003cp\u003eThe included 0.95x triplet corrector is essential for a fast Newtonian, sharpening stars across the APS-C (28mm) image circle and preventing the characteristic comatic aberration that affects parabolic mirrors. With the corrector, the focal length is a wide-field 544mm, perfect for framing large targets like the North American Nebula (NGC 7000) or the Andromeda Galaxy (M31).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCarbon Fiber Tube: A 3.97kg OTA for Thermal Stability\u003c\/h3\u003e\n\u003cp\u003eConstructed from carbon fiber, the optical tube offers superior thermal stability compared to aluminum. This minimizes focus shift during long imaging sessions as ambient temperatures drop, keeping your stars sharp from dusk till dawn. The material choice also contributes to the low optical tube weight of just 3.97kg.\u003c\/p\u003e\n\u003cp\u003eEven when fully equipped with the included tube rings, 230mm dovetail plate, and corrector, the gross weight is only 5.2kg. This makes the N160 compatible with a wide range of mid-capacity equatorial mounts, creating a portable deep-sky imaging rig that doesn't require a massive, observatory-class platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAPS-C Optimized: 55mm Back Focus and M48 Threads\u003c\/h3\u003e\n\u003cp\u003eThe Askar N160 is engineered for seamless integration into modern astrophotography workflows. The corrector terminates in a standard M48x0.75 male thread, and the system is designed to achieve critical focus at a 55mm distance from this thread's shoulder. This industry-standard spacing is compatible with most dedicated astronomy cameras, filter wheels, and off-axis guiders right out of the box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPS-C Format:\u003c\/strong\u003e The triplet corrector is designed to fully illuminate APS-C sensors, providing a corrected and unvignetted field of 28mm. This makes it an ideal match for popular cameras using sensors like the IMX571.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Spacing:\u003c\/strong\u003e The package includes sets of 0.1mm, 0.2mm, and 0.3mm shims, allowing you to fine-tune the 55mm back focus to compensate for filter thickness or sensor-plane variations, ensuring optimal optical correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-off:\u003c\/strong\u003e While excellent for APS-C, this system is not designed to illuminate full-frame sensors without some vignetting at the corners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Askar N160?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fully loaded weight of 5.2kg (11.5 lbs), the Askar N160 is well-suited for equatorial mounts with a payload capacity of at least 20-25 lbs for imaging. This ensures stable tracking and guiding. Mounts like the Sky-Watcher HEQ5, iOptron GEM28, or Celestron Advanced VX are appropriate choices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar N160 compatible with full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Askar N160 and its included 0.95x corrector are specifically designed to provide a corrected image circle of 28mm, which is ideal for \u003cstrong\u003eAPS-C format sensors\u003c\/strong\u003e. While a full-frame camera can be attached, you will experience significant vignetting and edge-of-field aberrations beyond the specified image circle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the 55mm back focus with the Askar N160?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 55mm back focus is measured from the shoulder of the M48x0.75 male thread on the corrector. You must ensure the total light path distance of all accessories between the corrector and your camera sensor is exactly 55mm. A typical setup includes a 2\" filter drawer or wheel and any necessary extension tubes. The included shims can be used for precise final adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the Askar N160's carbon fiber tube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit of the carbon fiber tube is its low coefficient of thermal expansion. This means it does not shrink or expand significantly with temperature changes throughout the night, which helps keep the telescope in focus for longer periods. It also contributes to the OTA's low weight of just 3.97kg, making it more portable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar N160 frame large targets like the Veil Nebula complex?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar N160's 544mm focal length is excellent for large deep-sky objects. When paired with a common APS-C sensor (like the Sony IMX571), it produces a field of view of approximately 2.5° x 1.7°. This is wide enough to capture the entire Veil Nebula complex, including both the Eastern Veil (NGC 6992) and Western Veil (NGC 6960), in a single frame with room to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar N160 for visual astronomy or planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Askar N160 is designed as an astrograph for photography, you can use it for visual observing by adding a 2\" eyepiece holder and eyepiece. However, its very fast focal ratio may be demanding on eyepieces. For planetary imaging of targets like Jupiter or Saturn, its 544mm focal length is quite short; you would need a powerful Barlow lens (5x or more) to achieve the necessary image scale, which can be challenging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e160mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e576mm (without Corrector) \/ 544mm (with Corrector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.6 (without Corrector) \/ f\/3.4 (with Corrector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Type\u003c\/td\u003e\n\u003ctd\u003eParabolic mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Type\u003c\/td\u003e\n\u003ctd\u003eTriplet design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Reduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.95x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e28mm (APS-C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.73\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from M48 thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Length\u003c\/td\u003e\n\u003ctd\u003e467mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Tube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e193mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Minor Axis\u003c\/td\u003e\n\u003ctd\u003e61mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e3.97kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Weight\u003c\/td\u003e\n\u003ctd\u003e0.22kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e5.2kg (including handle, tube rings, dovetail plate, and corrector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar N160 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e230mm Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMultifunctional Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e0.95x Coma Corrector\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM58 to M48 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e0.1mm Shim\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e0.2mm Shim\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e0.3mm Shim\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_N160_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52662253158685,"sku":"ASK-N160","price":1538.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-N160-Newtonian.jpg?v=1785458015"},{"product_id":"askar-sqa130","title":"Askar SQA130 f\/4.8 Quintuplet Petzval Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e130mm Aperture Quintuplet Petzval APO Optics\u003c\/li\u003e\n\u003cli\u003e624mm Focal Length at a Fast f\/4.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e55mm Corrected Image Circle for Medium Format Sensors\u003c\/li\u003e\n\u003cli\u003eIncludes Two SD (Super ED) Glass Elements\u003c\/li\u003e\n\u003cli\u003e11.76kg Gross Weight with Included Tube Rings \u0026amp; Dovetail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar SQA130 f\/4.8 Quintuplet Petzval Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA130 combines a 130mm aperture with a fast f\/4.8 focal ratio, delivered through an advanced quintuplet Petzval optical system. This design, incorporating two pieces of SD glass, produces a massive 55mm corrected image circle, eliminating the need for a separate flattener while fully illuminating medium format sensors. With a native focal length of 624mm and a gross weight of 11.76kg, the SQA130 is a dedicated astrograph built for capturing wide, perfectly flat fields of deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e130mm f\/4.8 Quintuplet Petzval Optics: A 55mm Flat-Field Design\u003c\/h3\u003e\n\u003cp\u003eThe SQA130's optical core is a 5-element Petzval design, which places the correcting lenses inside the optical tube for a permanently optimized, flat field. This integrated system produces pinpoint stars across a huge 55mm image circle, exceeding the 44mm diagonal of full-frame sensors and accommodating larger medium format chips without vignetting or field curvature. The inclusion of two SD glass elements ensures high-contrast images with sharp stars and minimal chromatic aberration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeamless Camera Integration: M68, M54, and M48 Adapters\u003c\/h3\u003e\n\u003cp\u003eAskar has engineered the SQA130 for direct and robust camera connection. The rear of the focuser terminates in an M68x1 thread, and the telescope includes M54 and M48 adapters to match the most common standards for full-frame cameras, filter wheels, and off-axis guiders. The system is designed for a recommended back focus of 55mm, but offers an adjustment range from 46mm to 76mm to accommodate nearly any imaging train configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEngineered for Stability: 11.76kg Gross Weight and 650mm Length\u003c\/h3\u003e\n\u003cp\u003eWith a total weight of 11.76kg including its tube rings and dovetail plate, the SQA130 requires a stable equatorial mount in the EQ6 class or greater for reliable tracking. The optical tube has a compact transport length of just 650mm with its dew shield retracted, which extends to 764mm to block stray light and mitigate dew formation during long imaging sessions. This robust mechanical build ensures the heavy-duty focuser can handle large camera packages without flexure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSQA130 vs. Triplet APOs: The Advantage of an Integrated Petzval Design\u003c\/h3\u003e\n\u003cp\u003eWhile a high-quality 130mm triplet refractor can produce excellent images, it requires a separate, correctly spaced field flattener to achieve a flat field, adding complexity and potential for tilt. The Askar SQA130's integrated Petzval design eliminates these variables entirely. You get a perfectly flat, wide field right out of the box with no extra accessories to buy or configure. The trade-off is a fixed focal length, but for imagers seeking a simple, powerful, and wide-field instrument, the SQA130 offers a more streamlined and reliable solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar SQA130's 55mm image circle handle large targets like the Andromeda Galaxy (M31) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 55mm image circle of the Askar SQA130 is significantly larger than the 44mm diagonal of a full-frame sensor. This means when imaging a vast object like the Andromeda Galaxy (M31), you will have perfectly sharp, unvignetted stars from one corner of your sensor to the other, capturing the full extent of the galaxy's spiral arms and dust lanes in a single frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required to properly support the 11.76kg gross weight of the Askar SQA130?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo ensure stable, precise tracking for long-exposure astrophotography, a mount with a payload capacity of at least 20kg (44 lbs) is recommended for the 11.76kg Askar SQA130. This typically corresponds to mounts in the Sky-Watcher EQ6-R Pro, iOptron CEM40\/GEM45, or a higher capacity class.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to buy a separate field flattener for the Askar SQA130?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003equintuplet Petzval optical design\u003c\/strong\u003e of the Askar SQA130 has the field-flattening elements built directly into the optical tube. It is designed to produce a flat field across its 55mm image circle without any additional correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the quintuplet Petzval design in the Askar SQA130?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is simplicity and optical optimization. A Petzval design provides a wide, flat, and highly corrected field of view in a self-contained system. This means you don't have to worry about calculating the correct spacing for a separate flattener, which eliminates a common source of error and frustration in astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my camera to the Askar SQA130 to achieve the correct 55mm back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar SQA130 includes M68, M54, and M48 adapters. You simply choose the adapter that matches your camera or filter wheel threads and add standard spacers (not included) to achieve the \u003cstrong\u003e55mm recommended distance\u003c\/strong\u003e from the adapter's flange to your camera sensor. The system allows a total range of 46mm to 76mm for flexibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the two SD glass elements in the SQA130's objective lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003etwo pieces of SD (Super-low Dispersion) glass\u003c\/strong\u003e are used to minimize chromatic aberration, also known as color fringing. This ensures that stars of different colors come to the same sharp focus, resulting in higher contrast, tighter star points, and no distracting purple halos around bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e130mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e624mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens Design\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Petzval APO (with 2 SD glass elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrected Image Circle\u003c\/td\u003e\n\u003ctd\u003e55mm (Medium Format), 44mm (Full Frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm recommended (46-76mm adjustable range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Adapters\u003c\/td\u003e\n\u003ctd\u003eM68, M54, M48 included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e650mm (dew shield contracted) \/ 764mm (dew shield extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e9.18kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e11.76kg (including tube rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_SQA130_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSQA130 OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOxford Cloth Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851326026013,"sku":"ASK-SQA130","price":6719.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA130-1_678dcb0a-c045-451c-a2a6-1cfce92e0f54.jpg?v=1788401634"},{"product_id":"askar-65phq","title":"Askar 65PHQ f\/6.4 Quintuplet Flat-Field Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e65mm Aperture Quintuplet APO Optical Design\u003c\/li\u003e\n\u003cli\u003e416mm Focal Length at f\/6.4\u003c\/li\u003e\n\u003cli\u003eBuilt-in Field Flattener with 44mm Image Circle\u003c\/li\u003e\n\u003cli\u003e2.8kg Total Weight Including Rings and Dovetail Plate\u003c\/li\u003e\n\u003cli\u003eIncludes M68, M54, and M48 Camera Adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 65PHQ f\/6.4 Quintuplet Flat-Field Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 65PHQ is a portable imaging instrument that delivers a perfectly flat 44mm image circle without external correctors. Its 65mm quintuplet objective lens, which includes two ED glass elements, operates at a focal length of 416mm and a focal ratio of f\/6.4 to produce high-contrast, color-pure images. Weighing just 2.8kg fully equipped, the 65PHQ provides a complete, travel-friendly solution for full-frame astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBuilt-in Flattener: A 44mm Flat Field Right Out of the Box\u003c\/h3\u003e\n\u003cp\u003eThe core of the 65PHQ is its Petzval-like quintuplet optical design. This integrated system eliminates the need for a separate field flattener, removing the complexity of calculating back focus and spacing. The result is a 44mm corrected image circle, capable of illuminating full-frame sensors with sharp stars from edge to edge. The inclusion of two ED (Extra-low Dispersion) glass elements ensures chromatic aberration is suppressed, preserving the natural color of stars and the subtle details in nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompact and Robust: 2.8kg of Imaging-Ready Engineering\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, the 65PHQ's optical tube weighs only 2kg, and the complete package with rings, handle, and dovetail plate comes in at a mere 2.8kg. Its contracted length of just 328mm makes it easy to pack and mount on lightweight, travel-friendly trackers. The scope features a 2.5\" rack-and-pinion focuser with a 360° rotator for precise camera framing, a retractable dew shield, and a Vixen-style dovetail plate, providing a rigid and stable platform for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDirect-Thread Connection: M68, M54, and M48 Adapters Included\u003c\/h3\u003e\n\u003cp\u003eThe 65PHQ ensures a secure, flex-free connection to your imaging train. It includes a set of three photographic adapters, stepping down from the focuser's native M68x1 thread to M54x0.75 and finally to the widely used M48x0.75. This allows direct, threaded attachment of most astronomy cameras, filter wheels, and off-axis guiders. The final M48 adapter is also threaded internally to accept standard 2-inch astronomy filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAstrograph and Visual Scope: f\/6.4 Versatility\u003c\/h3\u003e\n\u003cp\u003eWhile engineered as an astrograph, the 65PHQ is also a capable visual instrument. The f\/6.4 focal ratio provides bright, wide-field views of open clusters and large nebulae like the North American Nebula (NGC 7000). The high-quality optics also support higher magnification for observing planets and the Moon, making it a versatile grab-and-go telescope for both imaging and visual nights under the stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 65PHQ vs. 80PHQ: Portability Meets Optical Correction\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of the 65PHQ over its larger sibling, the 80PHQ, is its exceptional portability. The 65PHQ is lighter and more compact, making it a better match for smaller equatorial mounts and star trackers. Here’s how they compare:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 80PHQ Advantage:\u003c\/strong\u003e The 80mm aperture gathers more light and provides higher resolution, making it better suited for smaller, fainter targets. Its 600mm focal length offers more image scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 65PHQ Advantage:\u003c\/strong\u003e With an OTA weight of only 2kg (vs. the 80PHQ's 3.2kg), the 65PHQ is significantly easier to mount and balance. Its wider 416mm field of view is ideal for capturing large nebulae and constellations in a single frame.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Askar 65PHQ an \"astrograph\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe term \"astrograph\" signifies that the Askar 65PHQ is designed specifically for photography. Its \u003cstrong\u003equintuplet optical system\u003c\/strong\u003e has a built-in flattener that corrects for field curvature, ensuring stars remain sharp across its entire \u003cstrong\u003e44mm image circle\u003c\/strong\u003e without needing extra accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate flattener or reducer for the 65PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar 65PHQ has a built-in field flattener as part of its native optical design. You do not need to purchase an additional flattener. Simply attach your camera using the included adapters, achieve focus, and you will have a corrected field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size camera sensor is the Askar 65PHQ designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 65PHQ is designed to fully illuminate and correct a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e. This makes it an excellent match for cameras with full-frame (36x24mm) sensors, as well as smaller APS-C and Micro Four Thirds sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the 65PHQ frame a large target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its \u003cstrong\u003e416mm focal length\u003c\/strong\u003e, the Askar 65PHQ provides a wide field of view. When paired with a full-frame camera, it can easily capture the entire Andromeda Galaxy (M31), including its satellite galaxies M32 and M110, with plenty of surrounding space, making it ideal for large-scale mosaics or single-shot compositions of expansive deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 65PHQ on a portable mount for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With a total weight of only \u003cstrong\u003e2.8kg\u003c\/strong\u003e, the 65PHQ is an excellent choice for portable alt-azimuth or small equatorial mounts. For visual use, its f\/6.4 optics provide bright, expansive views, making it a superb \"grab-and-go\" telescope for sweeping the Milky Way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters are included with the 65PHQ for connecting my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 65PHQ comes with a 3-piece adapter set to ensure broad compatibility. The adapters provide threaded connections for \u003cstrong\u003eM68x1\u003c\/strong\u003e, \u003cstrong\u003eM54x0.75\u003c\/strong\u003e, and \u003cstrong\u003eM48x0.75\u003c\/strong\u003e, allowing you to securely attach most dedicated astronomy cameras and DSLRs\/mirrorless cameras with the appropriate T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e65mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e416mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuintuplet air-spaced APO (including two ED glasses)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e2.8kg (Including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e328mm (dew shield contracted) to 420mm (dew shield extended with adapters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Thread Type\u003c\/td\u003e\n\u003ctd\u003eM68×1, M54×0.75, M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (inside M48 adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e65PHQ OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 300mm Vixen-style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3-Piece Photographic Adapters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Set\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eManual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851326124317,"sku":"ASK-65PHQ","price":1259.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-65PHQ-1_bf592d2e-d6a8-49f2-b0a6-db0acc1c00d1.jpg?v=1788401643"},{"product_id":"askar-151phq","title":"Askar 151PHQ f\/7 Quadruplet Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e151mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003e1057mm Focal Length at f\/7\u003c\/li\u003e\n\u003cli\u003eIntegrated Flattener for a 60mm Image Circle\u003c\/li\u003e\n\u003cli\u003eIncludes Two ED Glass Elements for Color Correction\u003c\/li\u003e\n\u003cli\u003e13.7kg Total Weight with Rings and 300mm Dovetail Plate\u003c\/li\u003e\n\u003cli\u003eFour-Piece Adapter Set for Direct Camera Connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 151PHQ f\/7 Quadruplet Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 151PHQ combines a massive 151mm aperture with an integrated flat-field quadruplet optical design, delivering a 1057mm focal length at a native f\/7. This astrograph is engineered to illuminate a 60mm image circle without requiring an external flattener, eliminating complex backfocus calculations. With two ED glass elements for superior color correction and a total weight of 13.7kg, the 151PHQ provides the light-gathering power and image scale for capturing detailed, wide-field views of deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e151mm f\/7 Quadruplet APO Optics with 2 ED Elements\u003c\/h3\u003e\n\u003cp\u003eThe heart of the 151PHQ is its air-spaced quadruplet objective, which uses two extra-low dispersion (ED) glass elements to achieve apochromatic correction. This design aggressively suppresses chromatic aberration, ensuring stars are rendered as sharp, color-pure points without distracting halos. At 151mm of aperture and a 1057mm focal length, this instrument captures faint details on galaxies and nebulae with high resolution, making it ideal for serious deep-sky imagers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 60mm Flat Field: No External Flattener Required\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional refractors, the 151PHQ features a built-in field flattener as part of its core optical design. This Petzval-like configuration produces a corrected, flat 60mm image circle, fully illuminating large full-frame and medium-format sensors without any additional hardware. You can attach your camera directly via the included adapters and start imaging, confident that stars will remain round and sharp from the center to the corners of your frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging-Ready Mechanics: 13.7kg OTA with a 3.4\" Focuser\u003c\/h3\u003e\n\u003cp\u003eEngineered for stability, the 151PHQ weighs 11.6kg as an OTA and 13.7kg fully equipped with its tube rings and 300mm Losmandy-style dovetail plate. This substantial build requires a high-capacity mount but rewards you with a rigid imaging platform. The heavy-duty 3.4-inch rack-and-pinion focuser provides precise, no-slip control over focus, even with heavy camera payloads, and includes a 360° rotator for effortless image framing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescopic Dew Shield:\u003c\/strong\u003e Contracts the OTA length to 930.3mm for transport and extends to 1117.8mm to block stray light and prevent dew formation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-Machined Tube:\u003c\/strong\u003e The entire optical tube is built for rigidity and thermal stability, ensuring focus remains consistent throughout an imaging session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder Base:\u003c\/strong\u003e A standard finder shoe is included for attaching your preferred guide scope or finder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComplete Mounting \u0026amp; Connection System: 300mm Plate and 4 Adapters\u003c\/h3\u003e\n\u003cp\u003eThe 151PHQ arrives ready to integrate into your setup. It includes a pair of robust tube rings, a multi-function carrying handle, and a 300mm Losmandy-style dovetail plate for secure attachment to your mount. To connect your camera, a set of four threaded adapters is provided, stepping down from the focuser's native M86x1 thread to the universal M48x0.75 thread used by most cameras and filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 151PHQ vs. 130PHQ: Aperture and Portability\u003c\/h3\u003e\n\u003cp\u003eAs the largest instrument in Askar's PHQ line, the 151PHQ is the direct successor to the popular 130PHQ for imagers seeking more resolving power and light grasp.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 130PHQ Advantage:\u003c\/strong\u003e The 130PHQ is significantly lighter and more compact. Its lower weight makes it compatible with a wider range of medium-payload mounts, offering greater portability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 151PHQ Advantage:\u003c\/strong\u003e With a 151mm objective, the 151PHQ gathers 34% more light than the 130mm model, allowing you to capture fainter details or reduce exposure times. Its longer 1057mm focal length also provides greater image scale, making it better suited for resolving details in smaller galaxies and planetary nebulae.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 151PHQ require a separate field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Askar 151PHQ has a \u003cstrong\u003ebuilt-in flattener\u003c\/strong\u003e as part of its quadruplet optical design. It produces a flat 60mm image circle natively, so you do not need to purchase or calculate backfocus for an external flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of astronomical mount is needed for the Askar 151PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a total weight of \u003cstrong\u003e13.7kg (30.2 lbs)\u003c\/strong\u003e plus the weight of your camera and guide scope, a heavy-duty mount is essential. Look for mounts with an instrumental capacity of at least 50-60 lbs (22-27 kg) to ensure stable, precise tracking for long-exposure astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 151PHQ frame large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1057mm focal length\u003c\/strong\u003e provides an ideal image scale for large galaxies and nebulae when paired with a full-frame sensor. On a typical full-frame camera, M31 will be tightly framed, showcasing its core, dust lanes, and outer arms in a single, high-resolution shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 60mm image circle of the 151PHQ mean for my camera choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large \u003cstrong\u003e60mm image circle\u003c\/strong\u003e fully illuminates sensors up to medium format size without vignetting. This makes the 151PHQ compatible with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Frame (36x24mm) DSLR\/Mirrorless and Astro Cameras:\u003c\/strong\u003e These will be fully covered with excellent corner-to-corner star quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium-Format (e.g., 55mm diagonal) Astro Cameras:\u003c\/strong\u003e Even the largest consumer sensors will be illuminated, allowing you to capture immense fields of view.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 151PHQ's 1057mm focal length good for smaller galaxies like the Whirlpool Galaxy (M51)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e1057mm focal length\u003c\/strong\u003e provides excellent image scale for resolving details in medium-to-small deep-sky objects. With the 151mm aperture, you can capture the spiral structure of M51, the bridge connecting it to its companion galaxy NGC 5195, and individual HII regions with impressive clarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the quadruplet design in the Askar 151PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe four-element (quadruplet) design with \u003cstrong\u003etwo ED glass elements\u003c\/strong\u003e allows for a higher degree of optical correction than simpler doublet or triplet designs. It corrects for chromatic aberration (color fringing), spherical aberration, and field curvature simultaneously, resulting in a sharp, flat, color-pure image across the entire 60mm field without needing extra accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e151mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1057mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Design\u003c\/td\u003e\n\u003ctd\u003eQuadruplet Air-Spaced APO (with 2 ED elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e11.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e13.7 kg (including tube rings \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Observing)\u003c\/td\u003e\n\u003ctd\u003e930.3mm (dew shield contracted) to 1117.8mm (dew shield stretched)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Imaging)\u003c\/td\u003e\n\u003ctd\u003e976.8mm (dew shield contracted) to 1164.3mm (dew shield stretched)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Adapters\u003c\/td\u003e\n\u003ctd\u003eM86×1 to M68×1\u003cbr\u003eM68×1 to M54×0.75\u003cbr\u003eM54×0.75 to M54×0.75\u003cbr\u003eM54×0.75 to M48×0.75 (with M48 filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e151PHQ OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarrying Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar Losmandy 300mm Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e4-Piece Photographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAluminum Hard Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_151PHQ_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_151PHQ_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851326157085,"sku":"ASK-151PHQ","price":6299.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-151PHQ-1_a71134c0-c394-423b-9744-ec15cd536a28.jpg?v=1788401651"},{"product_id":"askar-203apo","title":"Askar 203APO f\/7 Triplet APO Refractor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e203mm Aperture Triplet Air-Spaced APO Objective\u003c\/li\u003e\n\u003cli\u003e1421mm Focal Length at f\/7\u003c\/li\u003e\n\u003cli\u003eIncludes one ED (Extra-Low Dispersion) Glass Element\u003c\/li\u003e\n\u003cli\u003eRetractable Tube Design for a 1145mm Minimum Length\u003c\/li\u003e\n\u003cli\u003e23.5kg Gross Weight with Included Rings and Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 203APO f\/7 Triplet APO Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 203APO refractor combines a massive 203mm aperture with a 1421mm focal length, delivering a native f\/7 focal ratio for high-resolution planetary and deep-sky imaging. Its triplet air-spaced APO objective, which includes one ED glass element, is housed in an optical tube that weighs 18.5kg and has a transport length of just 1145mm thanks to its retractable design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e203mm f\/7 Triplet APO: Correcting Color with ED Glass\u003c\/h3\u003e\n\u003cp\u003eThe heart of the 203APO is its 203mm triplet air-spaced apochromatic objective. By incorporating a piece of specialized ED (Extra-low Dispersion) glass, the optical system corrects for chromatic aberration, ensuring that stars are sharp, color-pure points of light without distracting purple fringing. This high level of color correction is critical for an instrument with this much light-gathering power, providing true-to-life colors and maximum contrast on everything from lunar craters to faint galactic dust lanes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 1145mm Transport Length: Retractable Tube for Portability \u0026amp; Binoviewers\u003c\/h3\u003e\n\u003cp\u003eDespite its large aperture, the Askar 203APO is designed for field use. A retractable dew shield allows the OTA to shrink to a transport length of 1145mm. More significantly, the rear lens tube itself is retractable, a key feature for enabling different observing setups. By contracting the rear assembly, you gain enough inward focus travel to use binoviewers without a Barlow lens, while extending it provides the correct focal point for standard 2\" diagonals and eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFocuser System with 2\" and 1.25\" Adapters\u003c\/h3\u003e\n\u003cp\u003eThe 203APO is equipped with a large-diameter, dual-speed rack and pinion focuser built to handle the weight of heavy imaging trains without flexure or slippage. The entire focuser assembly rotates a full 360°, allowing you to perfectly frame your target without rotating the entire optical tube. For maximum flexibility, the focuser includes two finder bases and comes standard with both 2\" and 1.25\" adapters, ensuring compatibility with all your visual and imaging accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e23.5kg Mounting System: Triplet Rings and a Losmandy Plate\u003c\/h3\u003e\n\u003cp\u003eSupporting the 18.5kg optical tube is a robust set of hardware that brings the total weight to 23.5kg. The system includes a unique set of triplet-style tube rings, providing exceptional stability and rigidity. These rings attach to a standard Losmandy-style dovetail plate, which is compatible with most high-capacity equatorial mounts. A long handle is mounted on top of the rings, which not only makes transport easier but also serves as an additional mounting point for guide scopes or other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 203APO vs. 185APO: The Light-Gathering Advantage of 203mm\u003c\/h3\u003e\n\u003cp\u003eWhile the Askar 185APO offers excellent imaging in a more portable package, the 203APO represents a significant step up in optical power. The primary trade-off is weight; at 23.5kg, the 203APO demands a higher-capacity mount than its smaller sibling.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 185APO Advantage:\u003c\/strong\u003e Lighter weight and smaller physical size make it easier to transport and mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar 203APO Advantage:\u003c\/strong\u003e The larger 203mm aperture gathers substantially more light, resulting in brighter images, shorter exposure times for faint deep-sky objects, and a higher theoretical resolution for splitting close double stars and resolving fine planetary detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 203APO's retractable rear tube help with binoviewers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBinoviewers require a large amount of inward focus travel that most refractors do not have. The \u003cstrong\u003eAskar 203APO's\u003c\/strong\u003e retractable rear tube solves this by allowing you to shorten the optical path. By contracting the tube, you can achieve focus with a binoviewer directly, without needing a Barlow or optical corrector that would increase magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar 203APO's 23.5kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a gross weight of \u003cstrong\u003e23.5kg\u003c\/strong\u003e (51.8 lbs) for the OTA, rings, and plate, a heavy-duty equatorial mount is essential. For reliable imaging, you should look for a mount with a manufacturer-rated payload capacity of at least 70 lbs (32kg), and preferably in the 100 lb (45kg) class to ensure stability and precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 203APO suitable for high-resolution planetary imaging of Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The large \u003cstrong\u003e203mm\u003c\/strong\u003e aperture provides exceptional resolving power, while the f\/7 focal ratio is a good starting point for planetary imaging. When combined with a 2.5x or 3x Barlow lens, the \u003cstrong\u003eAskar 203APO\u003c\/strong\u003e can achieve the long effective focal lengths needed to capture fine details like the Cassini Division in Saturn's rings or cloud bands on Jupiter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the benefits of the 203mm f\/7 triplet APO design for deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e203mm\u003c\/strong\u003e triplet APO design offers two main advantages for targets like the Orion Nebula (M42). First, the large aperture gathers a tremendous amount of light, revealing fainter, extended nebulosity in shorter exposures. Second, the apochromatic correction ensures that the bright stars of the Trapezium cluster at its core are rendered as sharp, color-pure points without chromatic aberration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Askar 203APO come with a long Losmandy dovetail plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA long telescope like the \u003cstrong\u003eAskar 203APO\u003c\/strong\u003e requires careful balancing on an equatorial mount, especially when adding heavy cameras, filter wheels, and guide scopes. The included long Losmandy plate provides a wide range of adjustment, making it much easier to slide the entire \u003cstrong\u003e23.5kg\u003c\/strong\u003e assembly forward or backward to achieve perfect balance in Right Ascension.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 2-inch and 1.25-inch accessories with the Askar 203APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eAskar 203APO\u003c\/strong\u003e is equipped with a large-diameter focuser that terminates in a standard 2\" opening. It also includes a \u003cstrong\u003e2\"\/1.25\" adapter\u003c\/strong\u003e, ensuring full compatibility with all standard eyepieces, diagonals, Barlow lenses, and camera nosepieces on the market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e203mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1421mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eTriplet air-spaced APO (including one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e1145mm (dew shield contracted) \/ 1335mm (dew shield stretched)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e18.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight\u003c\/td\u003e\n\u003ctd\u003e23.5kg (including tube rings and dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapters\u003c\/td\u003e\n\u003ctd\u003e2\" and 1.25\" visual adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e203APO OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 group\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 500mm Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAluminum Box\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_203APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_203APO_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851329204509,"sku":"ASK-203APO","price":12011.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-203APO-1_b026fdf7-2ccd-4381-8223-4faa58c07ff7.jpg?v=1788401660"},{"product_id":"askar-60f","title":"Askar 60F Flat-Field Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003e408mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/6.8 Native Focal Ratio\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener\u003c\/li\u003e\n\u003cli\u003e2.86kg Gross Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 60F Flat-Field Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 60F Flat-Field astrograph delivers full-frame imaging capability in a compact package, integrating a 60mm quadruplet APO objective with a 408mm focal length. Its native f\/6.8 optical design features a built-in flattener that produces a corrected 44mm image circle, eliminating the need for separate corrective optics and complex back-focus calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuadruplet APO Optics: A Flat 44mm Image Circle at f\/6.8\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar 60F is its quadruplet air-spaced APO objective, which includes one ED glass element to ensure high-contrast images with minimal chromatic aberration. Unlike standard doublets or triplets that require a separate flattener, the 60F's integrated rear element corrects field curvature natively across a full 44mm image circle. This design simplifies your imaging train, allowing you to attach a full-frame camera, focus, and begin capturing sharp, pinpoint stars from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePortable Astrograph Design: 2.86kg Grab-and-Go System\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability, the Askar 60F weighs just 2.86kg fully equipped with its included tube rings, handle, and 230mm Vixen dovetail plate. With a contracted length of only 289mm, it fits easily into carry-on luggage and pairs perfectly with lightweight tracking mounts. This makes it an ideal instrument for traveling to dark-sky sites or for quick setup in your backyard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eReady-to-Image: Integrated Adapters and 50mm Focuser\u003c\/h3\u003e\n\u003cp\u003eThe Askar 60F arrives ready for astrophotography with a complete set of photographic adapters. The robust focuser provides 50mm of precise travel and terminates in a standard M64x0.75 thread. Included adapters step this down to M54 and M48, allowing direct connection to most dedicated astronomy cameras and DSLRs. The M48 adapter also features an internal thread for mounting standard 2\" filters, keeping your imaging train as short and rigid as possible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 60F vs. William Optics RedCat 61: Focal Length and Simplicity\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a compact astrograph, a common comparison is the William Optics RedCat 61. The RedCat's f\/4.9 Petzval design is significantly faster, allowing for shorter sub-exposure times. However, the Askar 60F offers a distinct advantage with its longer 408mm focal length compared to the RedCat's 300mm, providing more image scale to better resolve details in smaller deep-sky objects or galaxy groups. For imagers seeking a straightforward, flat-field system with greater reach, the Askar 60F is the more targeted choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate field flattener for the Askar 60F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Askar 60F has a \u003cstrong\u003ebuilt-in field flattener\u003c\/strong\u003e as part of its quadruplet optical design. It is engineered to deliver a flat field across a 44mm image circle, covering full-frame sensors without any additional corrective optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 60F frame the North American Nebula (NGC 7000) with a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 408mm focal length paired with a full-frame sensor provides a field of view that is ideal for capturing the entire North American Nebula (NGC 7000) and the adjacent Pelican Nebula (IC 5070) in a single, well-composed frame. The 44mm corrected image circle ensures stars will remain sharp across the entire image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 60F suitable for a portable mount like the Sky-Watcher Star Adventurer GTi?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. With a fully-equipped weight of just \u003cstrong\u003e2.86kg\u003c\/strong\u003e, the Askar 60F is an excellent match for compact GoTo equatorial mounts. This combination creates a powerful and highly portable grab-and-go imaging system capable of capturing high-quality deep-sky images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters are needed to connect a ZWO camera to the Askar 60F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 60F includes a set of adapters, one of which is an \u003cstrong\u003eM48×0.75 adapter\u003c\/strong\u003e. This is the standard thread for most dedicated astronomy cameras, including those from ZWO. You can typically connect your camera directly to this adapter without needing to purchase anything additional.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 60F for visual astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While it is optically optimized for astrophotography, you can use the Askar 60F for visual observation by attaching a standard 1.25\" or 2\" diagonal and eyepiece. Its 408mm focal length makes it a superb instrument for wide-field sweeping of the Milky Way and observing large open star clusters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the Askar 60F's f\/6.8 focal ratio?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe f\/6.8 focal ratio offers an excellent balance between light-gathering speed and optical precision. It is fast enough for deep-sky imaging without being overly demanding on mount tracking accuracy. This moderate ratio also helps ensure excellent color correction and sharp star performance across the entire 44mm image circle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e408mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (with one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Contracted)\u003c\/td\u003e\n\u003ctd\u003e289mm (with 1.25\" adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Stretched)\u003c\/td\u003e\n\u003ctd\u003e369mm (with photo adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight (OTA only)\u003c\/td\u003e\n\u003ctd\u003e2.36kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (with rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e2.86kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Adapters\u003c\/td\u003e\n\u003ctd\u003eM64×0.75 to M54, M54 to M54, M54 to M48 (with 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_60F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 60F OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e230mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhotographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_60F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851329466653,"sku":"ASK-ASAPO60F","price":699.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-60F-Flat-Field-1_1ba61c52-0d61-4c47-a32a-9a79b28bf7c4.jpg?v=1788401669"},{"product_id":"askar-91f","title":"Askar 91F Flat-Field Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e91mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003e609mm Focal Length at f\/6.7\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener Design\u003c\/li\u003e\n\u003cli\u003e3.92kg Net Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 91F Flat-Field Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 91F astrograph integrates a 91mm aperture with a 609mm focal length for a native f\/6.7 optical system. Its quadruplet APO objective, which includes one ED glass element, delivers a flat, color-corrected 44mm image circle that illuminates full-frame sensors without an external flattener. The entire optical tube weighs only 3.92kg, creating a portable yet powerful imaging instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 91mm f\/6.7 Quadruplet APO with a 44mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar 91F is its self-flattened optical design. Unlike traditional refractors that require a separate, carefully spaced field flattener, this quadruplet system has the correction built in. This eliminates the need to calculate back focus or purchase additional accessories, allowing you to connect your camera and start imaging immediately after achieving focus.\u003c\/p\u003e\n\u003cp\u003eThe 44mm image circle is specifically designed to cover full-frame CMOS and DSLR sensors, ensuring sharp, pinpoint stars from the center to the corners of your frame. The inclusion of one ED (Extra-low Dispersion) glass element in the air-spaced objective effectively suppresses chromatic aberration, resulting in high-contrast images with true-to-life color rendition, free of distracting purple fringing around bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e3-inch Rack-and-Pinion Focuser with 360° Rotation\u003c\/h3\u003e\n\u003cp\u003eTo support heavy full-frame cameras and filter wheels without flexure, the Askar 91F is equipped with a rigid 3-inch dual-speed rack-and-pinion focuser. The 1:10 fine adjustment knob allows for critical focus, while the 30mm of focuser travel accommodates a wide range of accessories. A 360° rotator at the rear of the focuser lets you frame your target perfectly without rotating the entire optical tube.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapters:\u003c\/strong\u003e The package comes with a set of photographic adapters, including M54x0.75 and M48x0.75 connections, ensuring compatibility with most popular astronomy cameras and T-rings. The M48 adapter also includes a thread for 2-inch filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Versatility:\u003c\/strong\u003e For visual use, the scope includes standard 2-inch and 1.25-inch adapters, making it a capable instrument for observing star clusters and nebulae, not just for imaging them.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 3.92kg Lightweight Design with Dual Finder Bases\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability, the Askar 91F's main tube weighs just 3.92kg (4.52kg with rings and plate), making it an excellent match for mid-sized equatorial mounts. The retractable dew shield reduces the telescope's length to as little as 513mm for transport and storage. Thoughtful mechanical details enhance usability in the field.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Finder Mounts:\u003c\/strong\u003e Two finder bases are mounted on either side of the focuser, providing flexible mounting options for a guide scope and a finder scope simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e The included 230mm Vixen-style dovetail plate provides a secure connection to your mount and features 1\/4\" and 3\/8\" screw holes for direct attachment to a photo tripod for terrestrial viewing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 91F vs. Triplet APOs: The Advantage of an Integrated Flattener\u003c\/h3\u003e\n\u003cp\u003eWhen comparing the Askar 91F to a traditional triplet apochromat like the William Optics FLT 91, the primary distinction is the optical design philosophy. While both deliver excellent color correction, the triplet design requires an additional, separately purchased field flattener to achieve a flat field for astrophotography.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplicity and Cost:\u003c\/strong\u003e The Askar 91F's integrated flattener means there's no complex back-focus spacing to calculate and no extra accessory to buy. This simplifies the imaging train and reduces overall cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed Correction:\u003c\/strong\u003e Because the flattener is part of the objective design, the optical correction is perfectly matched to the telescope, eliminating potential issues with third-party flatteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-offs:\u003c\/strong\u003e A triplet with a separate flattener\/reducer can offer multiple focal ratios. The Askar 91F is optimized for its native 609mm focal length, prioritizing out-of-the-box imaging readiness over focal length flexibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of the Askar 91F's quadruplet design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is its \u003cstrong\u003eself-flattened optical system\u003c\/strong\u003e. Unlike standard refractors that require a separate accessory, the Askar 91F has the field flattener built into its quadruplet objective. This ensures a perfectly flat 44mm image circle for full-frame cameras without the need to calculate back focus or buy extra components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to calculate back focus for the Askar 91F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The integrated flattener design means you do not need to calculate back focus. Simply attach your camera using the provided adapters, bring the telescope into focus using the focuser, and you are ready to image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 91F perform on full-frame cameras like a Sony A7 series?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 91F is designed specifically for full-frame cameras. Its \u003cstrong\u003e44mm corrected image circle\u003c\/strong\u003e fully illuminates the sensor of a Sony A7, Canon R, or Nikon Z series camera, providing pinpoint stars across the entire frame without vignetting or distorted stars in the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is needed for the 4.52kg Askar 91F OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fully loaded weight of 4.52kg (including rings and dovetail plate), the Askar 91F is well-suited for mid-sized equatorial mounts with a payload capacity of 25-30 lbs (11-14 kg) or more. Mounts like the Sky-Watcher HEQ5 or iOptron CEM26\/GEM28 can carry this telescope and associated imaging gear with excellent stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 91F for visual observation of planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While optimized for astrophotography, its high-quality APO optics make it a very capable visual instrument. At 609mm, it provides medium power for observing Jupiter's moons and cloud bands or Saturn's rings. You would simply use the included 1.25\" or 2\" adapter with your choice of eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different adapter threads on the Askar 91F connect to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 91F includes a set of adapters to connect various devices. The primary connection types are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM64×1:\u003c\/strong\u003e The thread on the focuser drawtube itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54×0.75:\u003c\/strong\u003e A common thread size for many larger-format astronomy cameras and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48×0.75:\u003c\/strong\u003e The standard thread for 2\" filters and the most common connection for full-frame camera T-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e91mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e609mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (including one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e3-inch dual-speed Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight (OTA only)\u003c\/td\u003e\n\u003ctd\u003e3.92 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (w\/ rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e4.52 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Visual Config)\u003c\/td\u003e\n\u003ctd\u003e513mm (retracted) \/ 599mm (extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Photo Config)\u003c\/td\u003e\n\u003ctd\u003e550mm (retracted) \/ 636mm (extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-end Adapters\u003c\/td\u003e\n\u003ctd\u003eM64x1, M54x0.75, M48x0.75 (with 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_91F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 91F OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e230mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhotographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_91F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851329925405,"sku":"ASK-ASAPO91F","price":1399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-91F-Flat-Field-1_23348316-55b6-4015-90af-dd56471b084f.jpg?v=1788401678"},{"product_id":"askar-131f","title":"Askar 131F Flat-Field APO Refractor","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e131mm Aperture\u003c\/li\u003e\n\u003cli\u003ef\/7.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eQuadruplet Air-Spaced APO Optical Design\u003c\/li\u003e\n\u003cli\u003eIncludes one ED Glass Element\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 131F Flat-Field APO Refractor\u003c\/h2\u003e\n\u003cp\u003eThe Askar 131F Flat-Field refractor combines a 131mm aperture with a 983mm focal length in a native f\/7.5 optical system designed for serious astrophotography. Its quadruplet air-spaced APO objective, which includes one ED glass element, delivers a flat, color-corrected 44mm image circle without the need for an external flattener. With a gross weight of 9.4kg including rings and dovetail plate, this telescope integrates optical correction directly into the design, simplifying your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e131mm f\/7.5 Quadruplet APO: Color-Free, Flat-Field Imaging\u003c\/h3\u003e\n\u003cp\u003eThe core of the 131F is its advanced quadruplet objective lens. This design uses four air-spaced elements, including one ED (Extra-low Dispersion) glass element, to aggressively suppress chromatic aberration. Unlike standard doublets or triplets, this configuration corrects for color fringing and field curvature across the 44mm image circle, producing pinpoint stars on a dark background without requiring additional corrective optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e44mm Image Circle: Full-Frame Ready, No Flattener Required\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of the Askar 131F is its \"self-flattening\" optical system. This eliminates the most common point of failure and complexity in imaging setups: calculating and achieving the correct back focus for a separate flattener. The 44mm image circle fully illuminates full-frame sensors, and with the included M48 and M54 adapters, you can directly attach your camera, focus, and begin imaging immediately.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Additional Purchases:\u003c\/strong\u003e The integrated flattener means you save the cost and weight of a separate optical corrector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Back Focus Calculation:\u003c\/strong\u003e Simply attach your camera via the appropriate adapter and use the 30mm of focuser travel to achieve a sharp, flat field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Integration:\u003c\/strong\u003e The M54 to M48 adapter includes standard M48x0.75 filter threads, allowing you to easily add 2-inch filters to your imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e9.4kg Gross Weight: Robust Mechanics and 30mm Focuser Travel\u003c\/h3\u003e\n\u003cp\u003eEngineered for stability, the Askar 131F weighs 9.4kg when fully assembled with its included tube rings, handle, and 300mm Losmandy-style dovetail plate. The OTA itself has a net weight of 7.9kg and a variable length from 878mm to 1026mm depending on the adapter used and dew shield position. High-quality CNC machining ensures precise alignment, while the robust focuser provides 30mm of travel for fine-tuning focus with a variety of cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 131F vs. Triplet APOs: The Integrated Flattener Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile many high-end refractors use a triplet objective, they almost always require an additional field flattener or reducer\/flattener for astrophotography. This introduces complexity, potential tilt, and critical back focus spacing requirements that must be met with precision spacers.\u003c\/p\u003e\n\u003cp\u003eThe Askar 131F's quadruplet design incorporates that correction into the main optical tube. This provides a significant advantage: you get a guaranteed flat field optimized for the telescope's native 983mm focal length without any extra components or calculations. While a triplet with a separate flattener might offer more flexibility with reducers, the 131F delivers perfect out-of-the-box performance for full-frame imaging at its designed focal ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Askar 131F's self-flattening design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is simplicity and reliability. You do not need to purchase a separate field flattener or calculate the precise 55mm (or other) back focus distance. The Askar 131F's quadruplet optics deliver a flat 44mm image circle right out of the box, eliminating a major source of frustration in astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat size camera sensors will the Askar 131F's 44mm image circle cover?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 44mm image circle is large enough to fully illuminate \u003cstrong\u003efull-frame sensors\u003c\/strong\u003e (typically 43.3mm diagonal) found in cameras like the ZWO ASI6200 or Sony A7 series. It will also easily cover smaller APS-C and Micro Four Thirds sensors with no vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 131F perform on large deep-sky objects like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 983mm focal length provides excellent image scale for resolving detail in medium-to-large targets. When paired with a full-frame camera, the Askar 131F can frame the entirety of the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000), capturing these expansive objects with sharp stars from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Askar 131F's 9.4kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor imaging, a mount with a payload capacity of at least 40-50 lbs (18-22 kg) is recommended. The total weight of the Askar 131F is 9.4kg (about 20.7 lbs), and you must also account for your camera, guide scope, and other accessories. A mount like the Sky-Watcher EQ6-R Pro or Celestron CGX would be a suitable choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2-inch filters with the Askar 131F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The included photographic adapter set contains an M54-to-M48 adapter that is threaded to accept standard \u003cstrong\u003eM48x0.75 (2-inch) filters\u003c\/strong\u003e. This allows you to easily incorporate narrowband or light pollution filters into your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 131F need a separate dew heater?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike all refractors, the objective lens is exposed to the night air and can collect dew. While the extendable dew shield (which increases the total length to 963mm or 1026mm) helps, using a dedicated dew heater strip around the objective is highly recommended for all-night imaging sessions, especially in humid conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e131mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e983mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (including one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight (OTA only)\u003c\/td\u003e\n\u003ctd\u003e7.9kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (with rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e9.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Contracted)\u003c\/td\u003e\n\u003ctd\u003e878mm (with 1.25\" adapter) \/ 941mm (with photo adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Stretched)\u003c\/td\u003e\n\u003ctd\u003e963mm (with 1.25\" adapter) \/ 1026mm (with photo adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Adapters\u003c\/td\u003e\n\u003ctd\u003eM78×1 to M54×0.75, M54×0.75 to M54×0.75, M54×0.75 to M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (on M54-M48 adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_131F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e131F OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHandle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e300mm Losmandy Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhotographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_131F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851331236125,"sku":"ASK-ASAPO131F","price":2799.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-131F-Flat-Field-1_466f55e4-2cbf-413b-ab14-1372829037b5.jpg?v=1788401697"},{"product_id":"askar-111f-flat-field-astrograph","title":"Askar 111F Flat-Field Astrograph","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e111mm Aperture Quadruplet APO Optics\u003c\/li\u003e\n\u003cli\u003e766mm Focal Length at f\/6.9\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003eIntegrated Field Flattener Design\u003c\/li\u003e\n\u003cli\u003e5.74kg Net Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar 111F Flat-Field Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar 111F astrograph integrates a 111mm aperture with a 766mm focal length for a native f\/6.9 optical system. Its quadruplet APO objective, which includes one ED glass element, delivers a flat, color-corrected 44mm image circle that illuminates full-frame sensors without an external flattener. The optical tube weighs 5.74kg, pairing serious light-gathering with true out-of-the-box imaging readiness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 111mm f\/6.9 Quadruplet APO with a 44mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe core of the Askar 111F is its self-flattened optical design. Unlike traditional refractors that require a separate, carefully spaced field flattener, this quadruplet system — three elements in the front group and one in the rear — has the correction built in. This eliminates the need to calculate back focus or purchase additional accessories, allowing you to connect your camera and start imaging immediately after achieving focus.\u003c\/p\u003e\n\u003cp\u003eThe 44mm image circle is specifically designed to cover full-frame CMOS and DSLR sensors, ensuring sharp, pinpoint stars from the center to the corners of your frame. The inclusion of one ED (Extra-low Dispersion) glass element in the air-spaced objective effectively suppresses chromatic aberration, while a built-in baffle inside the main tube blocks stray light for higher contrast and true-to-life color rendition, free of distracting purple fringing around bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e3-inch Rack-and-Pinion Focuser with 360° Rotation\u003c\/h3\u003e\n\u003cp\u003eTo support heavy full-frame cameras and filter wheels without flexure, the Askar 111F is equipped with a rigid 3-inch dual-speed rack-and-pinion focuser. The 1:10 fine adjustment knob — protected by its own cap to prevent damage — allows for critical focus, while the 30mm of focuser travel accommodates a wide range of accessories. A 360° graduated rotator at the rear of the focuser lets you frame your target to a precise angle without rotating the entire optical tube.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Adapters:\u003c\/strong\u003e The package comes with a four-piece photographic adapter set, including M54x0.75 and M48x0.75 connections, ensuring compatibility with most popular astronomy cameras and T-rings. The M48 adapter also includes a thread for 2-inch filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Versatility:\u003c\/strong\u003e For visual use, the scope includes standard 2-inch and 1.25-inch adapters, making it a capable instrument for observing star clusters and nebulae, not just for imaging them.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Retractable Dew Shield and Triple Finder Bases\u003c\/h3\u003e\n\u003cp\u003eThe Askar 111F's main tube weighs 5.74kg (6.76kg with rings and plate), making it a natural match for mid to large equatorial mounts. The retractable dew shield reduces the telescope's length to as little as 664mm for transport and storage, and the CNC-machined tube carries the F-series' classic blue and white finish. Thoughtful mechanical details enhance usability in the field.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree Finder Mounts:\u003c\/strong\u003e Finder bases sit on either side of the focuser, and a third slot is built into the carry handle, letting you reposition a finder or guide scope without disassembly and mount multiple accessories at once.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e The included 300mm Vixen-style dovetail plate provides a secure connection to your mount and features 1\/4\" and 3\/8\" screw holes for direct attachment to a photo tripod for terrestrial viewing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAskar 111F vs. Triplet APOs: The Advantage of an Integrated Flattener\u003c\/h3\u003e\n\u003cp\u003eWhen comparing the Askar 111F to a traditional triplet apochromat like the William Optics FLT 110, the primary distinction is the optical design philosophy. While both deliver excellent color correction, the triplet design requires an additional, separately purchased field flattener to achieve a flat field for astrophotography.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplicity and Cost:\u003c\/strong\u003e The Askar 111F's integrated flattener means there's no complex back-focus spacing to calculate and no extra accessory to buy. This simplifies the imaging train and reduces overall cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGuaranteed Correction:\u003c\/strong\u003e Because the flattener is part of the objective design, the optical correction is perfectly matched to the telescope, eliminating potential issues with third-party flatteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-offs:\u003c\/strong\u003e A triplet with a separate flattener\/reducer can offer multiple focal ratios. The Askar 111F is optimized for its native 766mm focal length, prioritizing out-of-the-box imaging readiness — though a dedicated 111F 0.74× reducer is available separately for a wider, faster field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of the Askar 111F's quadruplet design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is its \u003cstrong\u003eself-flattened optical system\u003c\/strong\u003e. Unlike standard refractors that require a separate accessory, the Askar 111F has the field flattener built into its quadruplet objective. This ensures a perfectly flat 44mm image circle for full-frame cameras without the need to calculate back focus or buy extra components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to calculate back focus for the Askar 111F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The integrated flattener design means you do not need to calculate back focus. Simply attach your camera using the provided adapters, bring the telescope into focus using the focuser, and you are ready to image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 111F perform on full-frame cameras like a Sony A7 series?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 111F is designed specifically for full-frame cameras. Its \u003cstrong\u003e44mm corrected image circle\u003c\/strong\u003e fully illuminates the sensor of a Sony A7, Canon R, or Nikon Z series camera, providing pinpoint stars across the entire frame without vignetting or distorted stars in the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is needed for the 6.76kg Askar 111F OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a fully loaded weight of 6.76kg (including rings and dovetail plate), and more once a camera, filter wheel and guide scope are added, the Askar 111F is best paired with mounts rated for roughly 30-40 lbs (14-18 kg) of imaging payload. Mounts such as the Sky-Watcher EQ6-R Pro or iOptron GEM45\/CEM40 will carry this telescope and its accessories with the stability that a 766mm focal length demands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 111F for visual observation of planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While optimized for astrophotography, its high-quality APO optics make it a very capable visual instrument. At 766mm with 111mm of aperture, it provides ample power and light-gathering for observing Jupiter's moons and cloud bands or Saturn's rings. You would simply use the included 1.25\" or 2\" adapter with your choice of eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different adapter threads on the Askar 111F connect to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 111F includes a set of adapters to connect various devices. The primary connection types are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM78×1:\u003c\/strong\u003e The thread on the focuser drawtube itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54×0.75:\u003c\/strong\u003e A common thread size for many larger-format astronomy cameras and filter wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48×0.75:\u003c\/strong\u003e The standard thread for 2\" filters and the most common connection for full-frame camera T-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e111mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e766mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (including one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e3-inch dual-speed Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus (Imaging Mode)\u003c\/td\u003e\n\u003ctd\u003e43-73mm from M48x0.75 \/ 61-91mm from M54x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight (OTA only)\u003c\/td\u003e\n\u003ctd\u003e5.74 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGross Weight (w\/ rings \u0026amp; plate)\u003c\/td\u003e\n\u003ctd\u003e6.76 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Visual Config)\u003c\/td\u003e\n\u003ctd\u003e664mm (retracted) \/ 751mm (extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length (Photo Config)\u003c\/td\u003e\n\u003ctd\u003e728mm (retracted) \/ 815mm (extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-end Adapters\u003c\/td\u003e\n\u003ctd\u003eM78x1-M54x0.75, M54x0.75-M54x0.75, M54x0.75-M48x0.75 (with 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_111F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAskar 111F OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTube Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCarry Handle\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e300mm Vixen Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhotographic Adapter Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar_111F_Flat-Field_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":52851337232669,"sku":"ASK-ASKAR111F","price":2099.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-111f-Flat-Field-Astrograph_446ebebc-539c-4180-bcf7-9ac30c529e50.jpg?v=1788898954"}],"url":"https:\/\/davidastro.com\/collections\/askar-telescopes.oembed","provider":"David Astro","version":"1.0","type":"link"}