{"title":"Askar","description":"\u003cp\u003e\u003cstrong\u003eAskar\u003c\/strong\u003e specializes in portable, high-performance telescopes and optical accessories designed for astrophotography and visual observation. With precise optics, robust build quality, and practical portability, Askar instruments deliver sharp images across a range of deep-sky and planetary targets. At \u003cstrong\u003eDavid Astro\u003c\/strong\u003e, we provide the expertise to help you select the right Askar scope for your observing conditions and imaging goals.\u003c\/p\u003e\n\u003c!-- more --\u003e\n\n  \u003ch2\u003eCompact and Versatile Telescopes\u003c\/h2\u003e\n  \u003cp\u003eAskar telescopes are engineered for a balance of portability and optical performance. Their designs include:\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eED Refractors:\u003c\/strong\u003e Extra-low dispersion optics for high-contrast, color-corrected imaging.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApochromatic Refractors:\u003c\/strong\u003e Crisp star points and minimal chromatic aberration for wide-field imaging.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShort Tube Refractors:\u003c\/strong\u003e Lightweight and portable options ideal for travel and small mounts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAstrographs:\u003c\/strong\u003e Optimized for fast focal ratios, ideal for CMOS cameras and deep-sky imaging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eAccessories and Imaging Support\u003c\/h2\u003e\n  \u003cp\u003eAskar provides a range of accessories to optimize your imaging train and observing experience:\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eField Flatteners \u0026amp; Reducers:\u003c\/strong\u003e Maintain sharp stars across the full frame and reduce focal length for wider fields.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFocusers:\u003c\/strong\u003e High-precision dual-speed focusers for accurate backfocus adjustment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdapters \u0026amp; Mounting Solutions:\u003c\/strong\u003e Wide selection for cameras, filter wheels, and eyepieces, ensuring proper spacing and secure connections.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCamera-Compatible Designs:\u003c\/strong\u003e Most Askar telescopes support direct camera mounting for efficient imaging sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eWho Should Use Askar\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eTraveling astrophotographers needing lightweight, portable scopes without sacrificing image quality.\u003c\/li\u003e\n    \u003cli\u003eWide-field and deep-sky imaging enthusiasts seeking high-performance ED or apochromatic optics.\u003c\/li\u003e\n    \u003cli\u003eObservers requiring precise, low-maintenance optics for both visual and photographic applications.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eWhy Choose David Astro for Askar\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCurated Selection:\u003c\/strong\u003e Full range of Askar telescopes and accessories available from stock.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTechnical Guidance:\u003c\/strong\u003e Support for telescope selection, backfocus, and accessory compatibility.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHands-On Expertise:\u003c\/strong\u003e Advice based on real-world use and imaging conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e Reliable delivery across Canada, the USA, and worldwide.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003eWe ensure your Askar telescope is set up for maximum optical performance, whether for visual observing or astrophotography.\u003c\/p\u003e\n\n","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-fma180-pro-180mm-f-4-5-apo-full-frame-lens","title":"Askar FMA180 Pro 180mm f\/4.5 APO Full Frame Lens","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e40mm Aperture Sextuplet APO Lens\u003c\/li\u003e\n\u003cli\u003e180mm Focal Length at a Fast f\/4.5\u003c\/li\u003e\n\u003cli\u003e44mm Image Circle for Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus with M48x0.75 Threads\u003c\/li\u003e\n\u003cli\u003eIntegrated 360° Rotator and Internal Focuser\u003c\/li\u003e\n\u003cli\u003eLightweight 0.8kg Design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FMA180 Pro 180mm f\/4.5 APO Full Frame Lens\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA180 Pro lens integrates a 40mm sextuplet APO optical system into a compact astrograph, delivering a fast f\/4.5 focal ratio and a 180mm focal length for wide-field imaging. Its air-spaced design incorporates two ED glass elements to produce sharp, color-corrected stars across a 44mm image circle, fully illuminating full-frame sensors. Weighing just 0.8kg and measuring 167.5mm in length, the FMA180 Pro provides a standard 55mm back focus for seamless integration into your existing imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSextuplet f\/4.5 APO Optics: A 44mm Full-Frame Image Circle\u003c\/h3\u003e\n\u003cp\u003eThe FMA180 Pro's optical core is a six-element apochromatic design with two extra-low dispersion (ED) elements, engineered specifically for astrophotography. This configuration provides excellent chromatic aberration control, ensuring pinpoint stars without color fringing. The fast f\/4.5 focal ratio allows you to capture significant signal in shorter sub-exposures, reducing demands on your tracking mount.\u003c\/p\u003e\n\u003cp\u003eWith a 44mm image circle, this lens is built to serve modern full-frame CMOS and DSLR cameras. You can capture vast targets like the Andromeda Galaxy (M31) or the Rho Ophiuchi cloud complex without the vignetting or field curvature issues that plague lenses not designed for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePro Astrograph Design: Internal Focusing and a 360° Rotator\u003c\/h3\u003e\n\u003cp\u003eThe \"Pro\" designation signifies key mechanical upgrades for imagers. The internal focusing mechanism moves lens elements internally, eliminating drawtube sag and tilt that can occur with external focusers, especially when supporting heavy filter wheels and cameras. This ensures a rigid, stable optical train throughout your imaging session.\u003c\/p\u003e\n\u003cp\u003eAn integrated 360° rotator allows for precise framing of your target without rotating your entire camera and cable assembly. The OTA also includes a multi-functional finder base and a Vixen-style dovetail plate, allowing it to be used as a primary imaging scope, a high-end guide scope, or a compact visual instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFMA180 Pro vs. FMA180: Key Upgrades for Imaging\u003c\/h3\u003e\n\u003cp\u003eWhile sharing the same core optics as its predecessor, the FMA180 Pro introduces several critical enhancements for astrophotography. These upgrades address the practical needs of remote and automated imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Focuser:\u003c\/strong\u003e The Pro model's internal focusing design provides superior stability and focus retention compared to the external focuser of the standard FMA180. This is a significant advantage for automated focusing routines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° Rotator:\u003c\/strong\u003e The addition of a dedicated rotator makes framing targets dramatically easier, a feature absent on the original model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder Base:\u003c\/strong\u003e An integrated finder-style mounting base adds versatility for attaching guide scopes or other accessories directly to the OTA.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Askar FMA180 Pro suitable for full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar FMA180 Pro is designed with a corrected \u003cstrong\u003e44mm image circle\u003c\/strong\u003e. This is large enough to fully illuminate the sensors of full-frame cameras (typically 43.3mm diagonal) without significant light fall-off or distortion at the corners.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the FMA180 Pro perform on the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e180mm focal length\u003c\/strong\u003e is an excellent match for very large emission nebulae. Paired with a full-frame camera, the FMA180 Pro can capture the entire North American Nebula (NGC 7000) and the adjacent Pelican Nebula (IC 5070) in a single frame with high resolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the internal focusing on the FMA180 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInternal focusing provides superior mechanical stability. Because no external drawtube moves, it prevents potential sag or tilt, which is critical for maintaining a flat field with heavy cameras and filter wheels. It also ensures the overall length of the instrument remains fixed at \u003cstrong\u003e167.5mm\u003c\/strong\u003e, simplifying cable management.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FMA180 Pro as a guide scope on a larger SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. Its light weight of just \u003cstrong\u003e0.8kg\u003c\/strong\u003e and its Vixen-style dovetail, which can be attached to a larger scope's mounting rings or a finder shoe, make it an exceptional high-quality guide scope. The apochromatic optics ensure tight, round guide stars for precise tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to connect my astronomy camera to the FMA180 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FMA180 Pro terminates in standard \u003cstrong\u003eM48x0.75 male threads\u003c\/strong\u003e. It is designed for a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e, which is the same spacing required by most DSLRs with a T-ring and dedicated astronomy cameras when used with common filter wheels or off-axis guiders.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FMA180 Pro a good choice for planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this lens is a wide-field specialist. Its short \u003cstrong\u003e180mm focal length\u003c\/strong\u003e is designed to capture large swaths of the sky. For planetary imaging of targets like Jupiter or Saturn, you need a telescope with a much longer focal length (typically 2000mm or more) to achieve the necessary magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Size\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e180mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eSextuplet air-spaced APO with two ED elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (with internal 2\" filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e167.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e0.8kg (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFMA180 Pro OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967778910493,"sku":"ASK-FMA180","price":615.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-FMA180-Pro.jpg?v=1720552327"},{"product_id":"askar-2-5-f-3-9-full-frame-reducer-for-fra400-and-fra500","title":"Askar 2.5\" F\/3.9 Full Frame Reducer for FRA400 and FRA500","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces focal ratio to a fast f\/3.9\u003c\/li\u003e\n\u003cli\u003e0.7x reduction factor\u003c\/li\u003e\n\u003cli\u003e44mm image circle fully illuminates full-frame sensors\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus for easy camera connection\u003c\/li\u003e\n\u003cli\u003eIntegrated M48x0.75 thread for 2\" filters\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 2.5\" F\/3.9 Full Frame Reducer for FRA400 and FRA500\u003c\/h2\u003e\n\u003cp\u003eThe Askar 2.5\" F\/3.9 Full Frame Reducer transforms your Askar FRA400 or FRA500 astrograph into a significantly faster imaging system, achieving a final focal ratio of f\/3.9 with its 0.7x reduction factor. This 3-element, air-spaced optical design illuminates a full 44mm image circle, providing edge-to-edge sharpness on full-frame sensors while maintaining a standard 55mm back focus for straightforward integration of 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\u003e0.7x Reduction for an f\/3.9 System\u003c\/h3\u003e\n\u003cp\u003eBy shortening the effective focal length of your telescope, this reducer dramatically increases the speed of your optical system. On an Askar FRA400, the focal length is reduced from 400mm to just 280mm, changing the native f\/5.6 ratio to a swift f\/3.9. This speed increase allows you to capture the same amount of signal in roughly half the time, maximizing your data acquisition during short imaging windows.\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 Corrected Image Circle for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for large-format sensors, this reducer delivers a fully-corrected 44mm image circle. This ensures that you can utilize the entire field of view of your full-frame DSLR, mirrorless, or dedicated astronomy camera without significant vignetting or loss of star quality at the corners. It turns your astrograph into a true wide-field instrument capable of capturing vast nebulae and star fields in a single 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\u003e55mm Back Focus and Integrated 2\" Filter Threads\u003c\/h3\u003e\n\u003cp\u003eAskar designed this reducer for seamless integration into modern imaging setups. It features the industry-standard 55mm back focus, allowing you to connect most cameras and filter wheels with standard adapters. An integrated M48x0.75 thread at the front of the reducer provides a secure attachment point for any 2\" filter, enabling the use of light pollution or narrowband filters without adding complexity to your optical train.\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 Askar F\/3.9 reducer do for my FRA400 or FRA500?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 0.7x reducer shortens your telescope's focal length, making it optically \"faster.\" For the FRA400, it changes the focal length to 280mm and the focal ratio to f\/3.9. This results in a wider field of view and significantly shorter exposure times needed to capture faint 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 full-frame cameras with the Askar F\/3.9 reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reducer is specifically designed to produce 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. This ensures sharp stars across the entire frame of your large-format camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it difficult to connect my camera to the Askar F\/3.9 reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, connection is straightforward. The reducer requires a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e from the rear mounting flange to your camera sensor. This is the same spacing used by most DSLRs with a T-ring and many dedicated astronomy cameras with their included spacers, making it easy to achieve the correct distance for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does a 0.7x reducer affect my exposure times?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA faster focal ratio gathers light more quickly. Moving from f\/5.6 (on the FRA400) to f\/3.9 means your exposure times can be cut by more than half to achieve the same image brightness. A 5-minute sub-exposure at f\/5.6 is roughly equivalent to a 2.5-minute sub at f\/3.9.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I image the entire North America Nebula (NGC 7000) with an FRA400 and this reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this setup is ideal for such large targets. With the reducer, an FRA400 has a 280mm focal length. Paired with a full-frame sensor (like a Sony a7 series or ZWO ASI6200), this provides a field of view of approximately 7.3° x 4.9°, which is more than enough to comfortably frame the entire North America Nebula (NGC 7000) and the neighboring Pelican Nebula (IC 5070).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the best way to use 2\" filters with the Askar F\/3.9 reducer on my FRA500?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer features a built-in \u003cstrong\u003eM48x0.75 female thread\u003c\/strong\u003e on the telescope side. You can simply screw any standard 2\" mounted filter directly into the reducer before attaching it to your telescope. This places the filter in the optimal position within the light path.\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\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eF\/3.9 Full Frame Reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAskar FRA400, Askar FRA500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.7x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResulting Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e3-element, air-spaced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 (for 2\" filters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e72mm\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 2.5\" F\/3.9 Full Frame Reducer\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":44967778976029,"sku":"ASK-ASKAR7256RD","price":384.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA400FR-1__39150.1610302783.1280.1280.jpg?v=1684345839"},{"product_id":"askar-3-f-3-9-full-frame-reducer-for-fra600","title":"Askar 3\" F\/3.9 Full Frame Reducer for FRA600","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces FRA600 focal ratio to F\/3.9\u003c\/li\u003e\n\u003cli\u003eDesigned for full-frame sensors\u003c\/li\u003e\n\u003cli\u003eMaintains a standard 55mm backfocus\u003c\/li\u003e\n\u003cli\u003eFeatures integrated M48 (2-inch) filter threads\u003c\/li\u003e\n\u003cli\u003e3-inch barrel for a secure 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 3\" F\/3.9 Full Frame Reducer for FRA600\u003c\/h2\u003e\n\u003cp\u003eDesigned exclusively for the Askar FRA600 astrograph, this 3\" full-frame reducer transforms the telescope into a significantly faster F\/3.9 optical system. By reducing the focal length, this corrector provides a much wider field of view and cuts down exposure times, maintaining a standard 55mm backfocus for easy camera integration.\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\u003eTransform Your FRA600 into an F\/3.9 Astrograph\u003c\/h3\u003e\n\u003cp\u003eThis reducer converts your Askar FRA600 into a powerful, wide-field imaging instrument. The resulting F\/3.9 focal ratio allows you to gather significantly more light in a shorter period, enabling deeper exposures on faint nebulae and galaxies without taxing your mount's tracking accuracy over long sub-exposures. The wider field of view is essential for framing large-scale celestial objects 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\u003e55mm Backfocus and Full-Frame Illumination\u003c\/h3\u003e\n\u003cp\u003eEngineered for modern astrophotography, the reducer provides the industry-standard 55mm backfocus. This simplifies the process of connecting your full-frame DSLR, mirrorless, or dedicated astronomy camera, ensuring you can achieve perfect spacing with common M48 rings and accessories. Its optical design is optimized to fully illuminate a full-frame sensor, delivering sharp, well-corrected stars across the entire image. For added convenience, the reducer includes built-in M48x0.75 threads for easy installation of 2-inch filters into your imaging train.\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 benefit of using the Askar F\/3.9 reducer with my FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is speed. By converting your FRA600 to F\/3.9, you can dramatically shorten exposure times. This allows you to collect the same amount of data in less time, improving your efficiency and resulting in images with a higher signal-to-noise ratio. It also provides a wider field of view, perfect for large targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Askar reducer maintain a flat field with full-frame sensors on the FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Askar 3\" F\/3.9 reducer is specifically designed as a \"full frame\" corrector for the FRA600. Its multi-element optical system is engineered to deliver a flat, corrected field that illuminates large sensors, ensuring sharp stars from the center to the corners of your image.\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 F\/3.9 reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The reducer features integrated \u003cstrong\u003eM48x0.75 threads\u003c\/strong\u003e, which is the standard for 2-inch astronomy filters. You can directly screw in your favorite light pollution, narrowband, or LRGB filters without needing a separate filter drawer or wheel in some configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the backfocus of the Askar F\/3.9 reducer for the FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer is designed with a standard \u003cstrong\u003e55mm backfocus\u003c\/strong\u003e. This is measured from the rear flange of the reducer to the camera sensor. This standard distance makes it compatible with most dedicated astronomy cameras and DSLR\/mirrorless cameras when using the appropriate M48 T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar F\/3.9 reducer work with a camera and filter wheel combination on my FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as your total imaging train length meets the 55mm backfocus requirement. You will need to account for the thickness of your filter wheel, off-axis guider (if any), and all adapters between the reducer and your camera's sensor. The standard 55mm spacing provides enough room for common accessory combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar F\/3.9 reducer help when imaging the Andromeda Galaxy (M31) with the FRA600?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Andromeda Galaxy (M31) is a very large target. The standard FRA600 might frame the core tightly, but this F\/3.9 reducer widens the field of view significantly. This allows you to capture the full expanse of M31, including its faint outer arms and satellite galaxies M32 and M110, all within a single, well-composed shot on a full-frame sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44967779008797,"sku":"ASK-ASKAR656RD","price":615.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-FRA600FR-1__09035.1610302990.1280.1280.jpg?v=1684345841"},{"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-multi-connection-finder-plate-90","title":"Askar Multi-Connection Finder Plate 90","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for a seamless fit with the Askar FRA400\/5.6 Astrograph\u003c\/li\u003e\n\u003cli\u003eAccepts any accessory with a standard Vixen-style dovetail foot\u003c\/li\u003e\n\u003cli\u003eProvides a secure, flex-free mounting point for finders and guidescopes\u003c\/li\u003e\n\u003cli\u003eCompatible with a wide range of Askar and Sharpstar telescope handles\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 Multi-Connection Finder Plate 90\u003c\/h2\u003e\n\u003cp\u003eThe Askar Multi-Connection Finder Plate 90 (MCP90) establishes a robust and versatile mounting point for essential imaging accessories. Designed specifically as a seamless addition to the Askar FRA400\/5.6 astrograph, it also functions as a universal adapter for any device equipped with a standard Vixen dovetail foot, including a wide range of Sharpstar handles.\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 Dedicated Mounting Plate for the Askar FRA400\/5.6 Astrograph\u003c\/h3\u003e\n\u003cp\u003eWhile universally compatible, the MCP90 was engineered first and foremost for the Askar FRA400\/5.6 Quintuplet Astrograph. Its design complements the fit and finish of the FRA400, creating a rigid, integrated platform for mounting a guidescope or a large finderscope. This ensures your pointing and tracking accessories are securely attached without introducing flexure into 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\u003eUniversal Vixen-Foot Compatibility for Askar and Sharpstar Handles\u003c\/h3\u003e\n\u003cp\u003eThe true utility of the Askar MCP90 extends beyond a single telescope. By utilizing the standard Vixen-style dovetail foot interface, this plate can be attached to various Askar and Sharpstar carrying handles. This transforms a simple handle into a functional mounting point, letting you add, remove, or reposition your finder or guidescope across different telescope setups with ease.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Askar MCP90 Finder Plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar MCP90 is designed to provide a secure mounting platform for accessories like finderscopes and guidescopes that use a standard Vixen-style dovetail foot. It was made specifically for the Askar FRA400\/5.6 but also works with many other Askar and Sharpstar handles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar MCP90 only compatible with the FRA400\/5.6?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. While it was designed for a perfect fit on the Askar FRA400\/5.6, the MCP90 is a universal plate. It can be attached to various handles and systems that support its mounting pattern, allowing you to use Vixen-foot accessories on many different telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I mount on the Askar Multi-Connection Finder Plate 90?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can mount any accessory that uses a standard \u003cstrong\u003eVixen-style dovetail foot\u003c\/strong\u003e. This includes a wide variety of:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFinderscopes\u003c\/li\u003e\n\u003cli\u003eGuidescopes\u003c\/li\u003e\n\u003cli\u003eRed dot finders with compatible adapters\u003c\/li\u003e\n\u003cli\u003eOther aiming devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar MCP90 to mount my Vixen-style guidescope onto a Sharpstar telescope handle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar MCP90 is explicitly designed to be compatible with various Sharpstar handles. It acts as an adapter, allowing you to attach your Vixen-foot guidescope directly to the handle for a compact and stable autoguiding setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar MCP90 help when imaging with the FRA400\/5.6 astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor imagers using the FRA400\/5.6, the MCP90 provides a dedicated, rigid mounting point for a guidescope. This is critical for long-exposure astrophotography, as it ensures the guidescope is held perfectly parallel to the main telescope without any sagging or flex, leading to sharper stars in your final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Multi-Connection\" in the Askar MCP90 name refer to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \"Multi-Connection\" aspect refers to its dual compatibility. It connects to the telescope body (like the FRA400) or a handle, and in turn, it connects to a multitude of accessories via its universal Vixen dovetail foot receiver. It serves as a versatile link between your telescope and your essential 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\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\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":44967993016605,"sku":"ASK-ASKARMCP90","price":48.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-Multi-Connection-Plate-90__23028.1647896471.1280.1280.jpg?v=1684347675"},{"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-0-7x-universal-reducer-for-107phq-130phq-151phq","title":"Askar 0.7x Universal Reducer for 107PHQ\/130PHQ\/151PHQ","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e0.7x Focal Reduction Factor\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eMaintains a Standard 55mm Backfocus\u003c\/li\u003e\n\u003cli\u003e3-Element Air-Spaced Design with ED Glass\u003c\/li\u003e\n\u003cli\u003eOptimized for Askar 107PHQ, 130PHQ, and 151PHQ Telescopes\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 0.7x Universal Reducer for 107PHQ\/130PHQ\/151PHQ\u003c\/h2\u003e\n\u003cp\u003eThe Askar 3” 0.7x Full-Frame Reducer transforms the 107PHQ, 130PHQ, and 151PHQ astrographs into faster, wider-field instruments perfect for deep-sky imaging. Its 3-element optical design incorporates ED glass to deliver a corrected 44mm image circle, while maintaining the industry-standard 55mm backfocus for easy integration with your existing camera and filter wheel setup. This reducer effectively shortens exposure times by increasing the light-gathering power of your f\/7 system to a rapid f\/4.9.\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\u003eFaster Imaging at f\/4.9: A 0.7x Triplet ED Reducer\u003c\/h3\u003e\n\u003cp\u003eBy reducing the native f\/7 focal ratio of the PHQ series telescopes to f\/4.9, this 0.7x reducer cuts required exposure times nearly in half. This allows you to gather more signal on faint targets in less time, maximizing your productivity during short imaging windows. The air-spaced triplet optical design, which includes one element of extra-low dispersion (ED) glass, ensures sharp, high-contrast images with excellent color correction across the field.\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 Coverage: A Corrected 44mm Image Circle\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for large-format sensors, this reducer illuminates a 44mm image circle. This is large enough to cover full-frame (36x24mm) CMOS and CCD sensors without vignetting, ensuring your entire frame is evenly lit from corner to corner. You can capture vast nebulae like the Veil Nebula complex or the Andromeda Galaxy (M31) in their entirety, without sacrificing image brightness or star quality at the edges 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\u003eSeamless Integration: 55mm Backfocus and Multi-Thread Adapters\u003c\/h3\u003e\n\u003cp\u003eAskar designed this reducer for straightforward integration into any standard imaging train. It provides a precise 55mm backfocus, the common standard for DSLRs, mirrorless cameras, and dedicated astronomy cameras with a filter wheel. The reducer includes M68, M54, and M48 thread adapters, giving you the flexibility to connect to virtually any focuser, off-axis guider, or camera system without needing to source additional parts.\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 Askar 0.7x reducer do to the focal length of the Askar 130PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 130PHQ has a native focal length of 1000mm at f\/7.7. The \u003cstrong\u003e0.7x reducer\u003c\/strong\u003e will shorten its focal length to 700mm and change the focal ratio to a much faster f\/5.4, allowing for wider fields of view and significantly shorter exposure times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 0.7x reducer compatible with full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. It is designed to produce a corrected \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, which is large enough to fully illuminate a standard full-frame sensor (36x24mm) without significant vignetting, providing sharp stars across the entire frame.\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 0.7x Universal Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer is designed for a standard \u003cstrong\u003e55mm backfocus\u003c\/strong\u003e from its rearmost flange. It includes M68, M54, and M48 adapters, allowing you to directly connect most dedicated astronomy cameras, DSLRs (with a standard 44mm T-ring), and filter wheels using common extension tubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this reducer introduce chromatic aberration to my Askar 107PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The reducer features a \u003cstrong\u003e3-element optical design that includes one ED (Extra-low Dispersion) glass element\u003c\/strong\u003e. This design actively corrects for chromatic aberration, ensuring that the excellent color fidelity of the 107PHQ's quadruplet objective is maintained.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 0.7x reducer help when imaging 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\u003eOn a telescope like the Askar 151PHQ (1057mm focal length), the native field of view is too narrow to frame the entire North American Nebula. By reducing the focal length to approximately 740mm, the \u003cstrong\u003e0.7x reducer\u003c\/strong\u003e expands the field of view, allowing you to capture the entire nebula and the adjacent Pelican Nebula (IC 5070) in a single shot with a full-frame 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 0.7x reducer for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis accessory is designed and optically corrected specifically for astrophotography. While you might be able to reach focus with some long-focal-length eyepieces, it is not optimized for visual use and will likely result in suboptimal views. Its primary purpose is to create a flat, corrected field for a camera sensor.\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\u003eReduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.7x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescopes\u003c\/td\u003e\n\u003ctd\u003eAskar 107PHQ, 130PHQ, 151PHQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e3-element air-spaced triplet 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\u003eBackfocus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Focuser\u003c\/td\u003e\n\u003ctd\u003e3-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Thread Adapters\u003c\/td\u003e\n\u003ctd\u003eM68x1, M54x0.75, M48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Diameter\u003c\/td\u003e\n\u003ctd\u003e80mm\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_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":44968036466973,"sku":"ASK-ASF107130RE","price":538.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-PHQ-Reducer__94249.1657565838.1280.1280.jpg?v=1684348170"},{"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-multi-connection-finder-plate-150","title":"Askar Multi-Connection Finder Plate 150","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned specifically for the Askar FRA600\/5.6 Astrograph\u003c\/li\u003e\n\u003cli\u003eProvides a standard Vixen-style dovetail connection point\u003c\/li\u003e\n\u003cli\u003eCompatible with various Askar and Sharpstar telescope handles\u003c\/li\u003e\n\u003cli\u003eEnables secure mounting of finderscopes, guide scopes, and other accessories\u003c\/li\u003e\n\u003cli\u003eModel: MCP150 (Multi-Connection Plate 150)\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 Multi-Connection Finder Plate 150\u003c\/h2\u003e\n\u003cp\u003eThe Askar Multi-Connection Finder Plate 150 (MCP150) is a universal mounting solution engineered primarily for the Askar FRA600\/5.6 astrograph. This plate creates a standardized Vixen dovetail platform on your telescope's handle, allowing you to securely attach a wide range of essential 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\u003eA Dedicated Plate for the Askar FRA600\/5.6 Astrograph\u003c\/h3\u003e\n\u003cp\u003eWhile designed with universal applications in mind, the MCP150 is purpose-built to integrate seamlessly with the handle of the Askar FRA600\/5.6 astrograph. This provides owners of the FRA600\/5.6 a robust and stable platform for mounting guide scopes, large finders, or other aiming devices without modifying the existing hardware.\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\u003eUniversal Vixen \u0026amp; Sharpstar Handle Integration\u003c\/h3\u003e\n\u003cp\u003eBeyond its primary pairing, the Askar MCP150 plate functions as a versatile adapter for any telescope equipped with a compatible Askar or Sharpstar handle. By installing the plate, you convert your handle into a Vixen-style saddle. This allows any accessory that uses a standard Vixen dovetail foot—regardless of brand—to be mounted securely for your imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Askar MCP150 finder plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar MCP150 is designed to attach to a telescope's carrying handle, providing a standard \u003cstrong\u003eVixen-style dovetail saddle\u003c\/strong\u003e. This allows you to mount accessories like guide scopes and finder scopes that use a Vixen dovetail foot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar MCP150 plate compatible only with the FRA600\/5.6?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. While it was designed specifically for the Askar FRA600\/5.6, it is also a universal plate. It is confirmed to work with various handles from both \u003cstrong\u003eAskar and Sharpstar\u003c\/strong\u003e, making it a versatile accessory for many different telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I mount on the Askar MCP150?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can mount any device that is equipped with a standard \u003cstrong\u003eVixen dovetail foot\u003c\/strong\u003e. This commonly includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGuide scopes\u003c\/li\u003e\n\u003cli\u003eFinder scopes\u003c\/li\u003e\n\u003cli\u003eRed dot finders with Vixen adapters\u003c\/li\u003e\n\u003cli\u003eSmall auxiliary cameras or other aiming devices\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 Askar MCP150 attach to a telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar MCP150 is designed to be screwed directly onto the carrying handle of a compatible telescope, such as the Askar FRA600\/5.6. It creates a mounting platform on top of the existing handle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar MCP150 to mount my guide scope on my FRA600\/5.6 astrograph?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. This is one of its primary functions. If your guide scope has a standard Vixen-style dovetail bar, the MCP150 provides the necessary saddle to mount it securely to the FRA600\/5.6's handle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar MCP150 work with handles from brands other than Askar or Sharpstar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCompatibility is only officially stated for Askar and Sharpstar handles. While it may fit other handles with similar mounting hole patterns, you would need to verify the spacing and screw type yourself, as it cannot be guaranteed to fit.\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 colspan=\"2\" style=\"text-align:center;\"\u003eNo specifications provided.\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\"\u003eNo items listed in the box.\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":44968044757277,"sku":"ASK-MCP150","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-Multi-Connection-Finder-Plate-150__49278.1661632067.1280.1280.jpg?v=1684348247"},{"product_id":"askar-v-series-universal-dovetail-plate-200mm","title":"Askar V-Series Universal Dovetail Plate - 200mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e200mm Length\u003c\/li\u003e\n\u003cli\u003eV-Series (Vixen-style) Profile\u003c\/li\u003e\n\u003cli\u003eUniversal Hole and Slot Pattern\u003c\/li\u003e\n\u003cli\u003eMounts Tube Rings, Guide Rings, and Cameras\u003c\/li\u003e\n\u003cli\u003eTripod Compatible\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-Series Universal Dovetail Plate - 200mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar V-Series Universal Dovetail Plate provides a rigid 200mm mounting platform for securely connecting your telescope, guidescope, or camera to any mount equipped with a Vixen-style saddle.\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 200mm Platform for Balancing and Accessory Mounting\u003c\/h3\u003e\n\u003cp\u003eThe 200mm length of this Askar V-series plate offers significant advantages for balancing your optical tube assembly. It provides ample room to slide your telescope forward or back within the saddle, making it easier to achieve perfect equilibrium when adding or removing accessories like cameras, filter wheels, or heavy eyepieces.\u003c\/p\u003e\n\u003cp\u003eDesigned for broad compatibility, the plate features a variety of pre-drilled holes and milled slots. This allows you to securely attach a wide range of equipment, from telescope tube rings and guidescope rings to camera heads for use on a standard photo tripod.\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 a V-series dovetail plate like the Askar 200mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003eV-series\u003c\/strong\u003e, or Vixen-style, dovetail is one of the most common mounting standards in amateur astronomy. It refers to a specific trapezoidal shape and width that fits into the corresponding saddle on many popular telescope mounts. The Askar V-Series 200mm plate adheres to this standard for wide compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose the 200mm Askar V-Series plate over a shorter one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA longer 200mm plate provides two main benefits. First, it offers more travel for \u003cstrong\u003ebalancing your telescope\u003c\/strong\u003e, which is critical when changing heavy accessories. Second, it allows for wider spacing between tube rings, which increases the mechanical stability and rigidity of your optical tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount my DSLR camera directly to the Askar V-Series 200mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The universal slots on the Askar V-Series 200mm plate are typically compatible with the standard 1\/4\"-20 screw used on most DSLR and mirrorless cameras. This allows you to mount your camera and lens directly to a telescope mount for wide-field astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar V-Series 200mm plate compatible with Losmandy-style (D-series) saddles?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the V-series plate is narrower than a Losmandy D-series plate and will not fit securely in a D-series-only saddle. However, many modern mounts feature a \u003cstrong\u003edual V\/D saddle\u003c\/strong\u003e that is designed to accept both standards. For heavier telescope setups, a wider D-series plate is recommended for greater stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar V-Series 200mm plate help with balancing a Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSchmidt-Cassegrain telescopes (SCTs) often have a limited mounting rail. Replacing it with the 200mm Askar V-Series plate provides a much longer surface area, making it significantly easier to achieve balance, especially after adding a heavy imaging train, a large diagonal, or a guidescope.\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-Series 200mm plate to mount a guidescope alongside my main telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The multiple holes and slots on the Askar V-Series 200mm plate allow for flexible mounting configurations. You can often find a combination of holes that allows you to attach your main telescope's tube rings and a set of smaller guiding rings for your guidescope on the same plate.\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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Style\u003c\/td\u003e\n\u003ctd\u003eV-Series (Vixen-style)\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 V-Series Universal Dovetail Plate - 200mm\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":"Red","offer_id":44968045084957,"sku":"ASK-ASVDP200R","price":66.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/25fa4114-c005-4483-8e8f-6eaa9baeb617.jpg?v=1740071646"},{"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-d-series-universal-dovetail-plate-300mm","title":"Askar D-Series Universal Dovetail Plate - 300mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e300mm Overall Length\u003c\/li\u003e\n\u003cli\u003eUniversal D-Series (Losmandy-style) Profile\u003c\/li\u003e\n\u003cli\u003eSlotted and Tapped Mounting Holes\u003c\/li\u003e\n\u003cli\u003eDesigned for Tube Rings and Guide Scopes\u003c\/li\u003e\n\u003cli\u003eProvides Critical Rigidity and Balance Adjustment\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 D-Series Universal Dovetail Plate - 300mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar D-Series Universal Dovetail Plate provides a rigid, full-length mounting platform for securely attaching telescope tube rings, guide scope rings, and other critical accessories to any D-style saddle. Its extended length is essential for achieving precise balance with long optical tubes or heavy 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\u003eA Universal D-Series Foundation for Imaging Rigs\u003c\/h3\u003e\n\u003cp\u003eEngineered for broad compatibility, this dovetail plate features a versatile pattern of slots and threaded holes. This design allows you to attach a wide variety of accessories from different manufacturers, eliminating the need for brand-specific plates.\u003c\/p\u003e\n\u003cp\u003eThe plate's length gives you ample room to adjust the fore-aft position of your entire telescope assembly. This is critical for balancing the load on your equatorial mount, especially after adding a heavy camera, filter wheel, or a separate guide scope, ensuring smooth tracking and sharp long-exposure images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Askar D-Series 300mm dovetail plate used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar D-Series plate serves as the primary interface between your telescope tube rings and your mount's saddle. Its main purpose is to provide a secure, rigid connection and allow for fine-tuning the balance of your entire setup by sliding the plate forward or backward in the saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 300mm D-Series plate fit my mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis plate is designed to fit any mount equipped with a \"D-style\" or Losmandy-style saddle. It is not compatible with the narrower \"V-style\" or Vixen-style saddles. Many modern mounts feature a dual saddle that can accept both D-style and V-style plates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 300mm D-Series plate help balance a long refractor for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA long refractor, especially one with a heavy camera and guide scope attached, can be difficult to balance. The 300mm length of the Askar plate provides a long track for the tube rings, giving you a much wider range of adjustment to find the perfect center of gravity. This prevents strain on your mount's motors and improves tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between a D-series and V-series dovetail?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is width. \u003cstrong\u003eD-series (Losmandy)\u003c\/strong\u003e plates are wider and more robust, typically used for heavier telescope systems. \u003cstrong\u003eV-series (Vixen)\u003c\/strong\u003e plates are narrower and are common on smaller, more portable mounts and telescopes. They are not interchangeable unless your mount has a dual-style saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount both my main scope rings and a guide scope to the Askar 300mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The generous length and multiple mounting holes are specifically intended for this purpose. You can mount your primary telescope's tube rings and then use the remaining space to attach a set of guide scope rings directly to the same plate, creating a rigid, co-aligned imaging platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a longer dovetail plate always better?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot necessarily. While a long plate like the Askar 300mm is excellent for balance, it can be heavier than a shorter plate and may be too long for very short optical tubes. For a small, wide-field refractor on a portable mount, a shorter plate is often a better and lighter choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\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":"Red","offer_id":44968064188701,"sku":"ASK-ASLDP300R","price":134.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-Losmandy-Dovetail-Plates__84114.1669063134.1280.1280.jpg?v=1684348589"},{"product_id":"askar-d-series-universal-dovetail-plate-400mm","title":"Askar D-Series Universal Dovetail Plate - 400mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e400mm Length\u003c\/li\u003e\n\u003cli\u003eD-Series (Losmandy-style) Profile\u003c\/li\u003e\n\u003cli\u003eUniversal Hole and Slot Pattern\u003c\/li\u003e\n\u003cli\u003eConnects Tube Rings and Accessories\u003c\/li\u003e\n\u003cli\u003eSolid, Flex-Free Mounting Platform\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 D-Series Universal Dovetail Plate - 400mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar D-Series Universal Dovetail Plate provides a rigid 400mm mounting platform engineered to securely attach large optical tubes and complex imaging trains to any standard D-style saddle 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\u003eA 400mm D-Style Foundation for Large OTAs\u003c\/h3\u003e\n\u003cp\u003eAt 400mm in length, this D-style (Losmandy-compatible) plate is designed to distribute the weight of heavy or long optical tube assemblies, minimizing mechanical flexure and vibration. It creates a stable, continuous connection between your tube rings and mount saddle, which is critical for maintaining alignment and achieving sharp, long-exposure images.\u003c\/p\u003e\n\u003cp\u003eThis extended length is particularly beneficial for large refractors, Schmidt-Cassegrains, or Newtonian reflectors where achieving precise balance is essential. The plate provides ample surface area to adjust the telescope's position forward or backward, ensuring the entire setup is perfectly balanced over the mount's center of gravity.\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\u003eMounting Flexibility: Multiple Slots on a 400mm Plate\u003c\/h3\u003e\n\u003cp\u003eEngineered with an array of elongated slots and threaded holes, the Askar 400mm plate accommodates a wide variety of tube ring spacings and accessory configurations. This universal pattern eliminates the need to drill custom holes, allowing you to easily attach rings from different manufacturers or adjust their position for optimal balance.\u003c\/p\u003e\n\u003cp\u003eThe numerous mounting points allow you to attach guide scopes, finder scopes, and control boxes directly to the dovetail plate alongside the main OTA. This co-mounting strategy keeps your imaging train compact and rigid, reducing the potential for differential flexure that can ruin guided exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Askar D-Series 400mm Dovetail Plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of the Askar D-Series 400mm plate is to provide a secure, flex-free interface between a telescope's tube rings and a D-style (Losmandy-style) mount saddle. Its 400mm length is ideal for larger, heavier telescopes that require a long mounting surface for stability and proper balancing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 400mm length of this Askar plate help with a large SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a large SCT, like an 11\" or 14\" model, the 400mm length is critical for balancing. When you add a heavy imaging train (camera, filter wheel, OAG), the center of gravity shifts backward. This long plate allows you to slide the entire telescope assembly further forward in the mount saddle to achieve perfect balance, which is essential for accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount a guide scope to the Askar D-Series 400mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The plate features multiple slots and holes specifically to allow for the attachment of accessories like guide scope rings, a finder scope bracket, or other hardware directly to the plate. This creates a more rigid setup than mounting a guide scope on top of the main telescope's tube rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this Askar 400mm D-style plate and a V-style plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the physical profile and load capacity.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD-Style (Losmandy):\u003c\/strong\u003e Wider, more robust, and designed for heavier telescope setups. It is the standard for most medium-to-large observatory-class mounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Style (Vixen):\u003c\/strong\u003e Narrower and lighter, typically used for smaller, more portable telescopes and mounts.\u003c\/li\u003e\n\u003c\/ul\u003e\nThis Askar 400mm plate will only fit in a D-style saddle plate and is intended for larger instrument packages.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar D-Series 400mm plate fit my specific mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis plate will fit any mount equipped with a D-style or \"Losmandy-D\" saddle. It is not compatible with mounts that only accept the narrower V-style (Vixen) dovetails. Always check your mount's specifications to confirm it uses a D-style saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the slots on the Askar 400mm plate help balance an OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe elongated slots offer continuous adjustment for your tube rings. This means you are not limited to a few pre-drilled holes. You can place the rings at their ideal spacing for your telescope and then slide the entire assembly along the plate's length to achieve perfect front-to-back balance, even with awkwardly-weighted 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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Style\u003c\/td\u003e\n\u003ctd\u003eD-Series (Losmandy Compatible)\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\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":"Red","offer_id":44968071069981,"sku":"ASK-ASLDP400R","price":178.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ASKAR-D-Series-400mm-Doevtail-LDP-400__09339.1672081948.1280.1280.jpg?v=1684348658"},{"product_id":"askar-d-series-universal-dovetail-plate-200mm","title":"Askar D-Series Universal Dovetail Plate - 200mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLosmandy D-Series Profile\u003c\/li\u003e\n\u003cli\u003eUniversal Hole and Slot Mounting Pattern\u003c\/li\u003e\n\u003cli\u003eFlexible Accessory Integration\u003c\/li\u003e\n\u003cli\u003eSolid, Flex-Free 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 D-Series Universal Dovetail Plate - 200mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar D-Series Universal Dovetail Plate - 200mm provides a rigid, adaptable foundation for your telescope system. Engineered for Losmandy D-style saddles, its array of slots and threaded holes creates broad compatibility for mounting tube rings, guide scopes, and other accessories without being locked into a specific hole pattern.\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 Flexible D-Series Foundation for Your Telescope\u003c\/h3\u003e\n\u003cp\u003eThis dovetail plate is designed to solve common mounting challenges. Where a manufacturer-specific plate has fixed holes, the Askar Universal plate uses a combination of long slots and multiple threaded mounting points. This allows you to precisely balance your optical tube and attach accessories like guide scopes or focus motors exactly where you need them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLosmandy D-Style Profile:\u003c\/strong\u003e Ensures a secure, full-contact fit with D-series saddle plates, preventing flexure in your imaging setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Hole \u0026amp; Slot Pattern:\u003c\/strong\u003e Accommodates a wide variety of tube ring spacings and accessory mounting brackets, offering far more adaptability than pre-drilled plates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Platform:\u003c\/strong\u003e Supplies the structural rigidity needed to connect your optical tube, guide scope, and other hardware into a single, stable imaging platform.\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 D-Series Universal Dovetail Plate help balance a Schmidt-Cassegrain telescope with a guidescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe long slots on the Askar D-Series Universal Dovetail Plate allow you to slide the entire telescope assembly forward or backward in the mount's saddle to achieve perfect balance. This is crucial when adding accessories like a guidescope or heavy camera, as you can precisely adjust the center of gravity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar D-Series Universal Dovetail Plate to mount Vixen-style tube rings on my Losmandy-style mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, that is a primary use case. The universal slot and hole pattern on the Askar D-Series plate is designed to accommodate various tube ring hole spacings, including those common on Vixen-style hardware. This allows you to securely attach your Vixen-compatible rings to the plate, which then fits into your Losmandy D-style saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of a 'D-Series' dovetail plate like the Askar Universal plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 'D-Series' plate, also known as a \u003cstrong\u003eLosmandy-style plate\u003c\/strong\u003e, is wider and more substantial than the narrower Vixen-style (V-series) plate. This results in a larger contact area with the mount's saddle, creating a more rigid and secure connection that is less prone to flexure, especially with heavier telescopes. The main trade-off is that D-series plates and saddles are heavier and bulkier than their V-series counterparts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Askar D-Series Dovetail Plate 'universal'?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 'universal' design refers to its flexible mounting options. Instead of a few pre-drilled holes for a specific telescope model, the Askar D-Series plate features a combination of slots and multiple threaded holes. This allows you to attach a wide variety of tube rings and accessories, regardless of their specific hole spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar D-Series Universal Dovetail Plate suitable for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The rigidity of the D-series format and the flexibility of the universal mounting pattern make the Askar D-Series plate an excellent choice for astrophotography. It ensures a stable connection to the mount and allows for precise placement and balancing of your imaging equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I mount on the Askar D-Series Universal Dovetail Plate besides tube rings?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBeyond the primary tube rings for your telescope, the slots and holes on the Askar D-Series plate are useful for mounting guiding rings for a separate guidescope, a handle for carrying the telescope, or brackets for holding accessories like a mini-PC or a USB hub.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\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":"Red","offer_id":44968071135517,"sku":"ASK-ASLDP200R","price":101.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ASKAR-D-Series-200mm-Doevtail-LDP-200__34019.1672082197.1280.1280.jpg?v=1684348660"},{"product_id":"askar-v-series-universal-dovetail-plate-150mm","title":"Askar V-Series Universal Dovetail Plate - 150mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e150mm Length\u003c\/li\u003e\n\u003cli\u003eV-Series (Vixen-Style) Profile\u003c\/li\u003e\n\u003cli\u003eUniversal Mounting Slots and Holes\u003c\/li\u003e\n\u003cli\u003eConnects Tube Rings, Guide Scopes, or Cameras\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-Series Universal Dovetail Plate - 150mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar V-Series Universal Dovetail Plate provides a rigid 150mm mounting platform, engineered with multiple slots and threaded holes to securely attach telescope tube rings, guide scopes, or camera systems to any standard Vixen-style saddle.\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 Universal 150mm Vixen-Style Mounting Platform\u003c\/h3\u003e\n\u003cp\u003eThis 150mm plate conforms to the ubiquitous Vixen-style standard, ensuring compatibility with a vast range of equatorial mounts and saddle plates. The array of slots and pre-drilled holes allows for flexible positioning of tube rings, letting you achieve precise balance with different accessory loads. This adaptability is critical when mounting guide scopes or heavy camera setups alongside your main optical tube.\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\u003eChoosing the Right Length: 150mm vs. Shorter Dovetails\u003c\/h3\u003e\n\u003cp\u003eWhile shorter dovetail plates are lighter, the 150mm length of the Askar V-Series plate provides significantly more surface area for adjusting balance. This is crucial for smaller refractors or wide-field astrographs where the position of a heavy camera or filter wheel can dramatically shift the center of gravity. The extra length gives you the room needed to slide the entire assembly forward or backward in the saddle for perfect equilibrium, which is essential for accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use for the Askar 150mm V-Series Dovetail Plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary use of the Askar 150mm plate is to provide a standardized, secure connection between a telescope optical tube (via tube rings), a guide scope, or a camera assembly and a mount equipped with a Vixen-style (V-style) saddle. Its 150mm length and multiple mounting holes offer flexibility for balancing your equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 150mm dovetail fit my mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your mount has a \u003cstrong\u003eVixen-style or \"V-style\" saddle\u003c\/strong\u003e, this plate will fit. This is the most common standard for small to medium-sized astronomy mounts from brands like Sky-Watcher, iOptron, and Celestron. It will not fit in a Losmandy-style or \"D-style\" saddle without an adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 150mm length help with balancing a small refractor like a William Optics RedCat?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 150mm plate provides more \"runway\" for balancing a compact, rear-heavy instrument like a RedCat, especially when a heavy camera and filter wheel are attached. The extra length allows you to slide the entire telescope assembly further forward in the mount's saddle to achieve perfect balance, which is critical for preventing tracking errors during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount a DSLR and lens directly to the Askar 150mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You can attach a tripod head or a lens collar with a standard 1\/4\"-20 thread to one of the slots on the Askar 150mm plate. This allows you to mount a DSLR and lens combination directly to your equatorial mount for wide-field astrophotography, using the plate as a stable base.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose this 150mm plate over a shorter 100mm version for my guide scope setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 150mm plate offers more mounting flexibility. It provides enough space to mount both the rings for your main telescope and a set of guide rings for a guide scope on the same plate. A shorter plate might not have enough physical length to accommodate both sets of rings, forcing a less stable \"piggyback\" solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"V-Series\" mean for the Askar Universal Dovetail Plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\"V-Series\" refers to the Vixen-style dovetail standard, which is a specific profile with a 45mm width and angled sides. It is one of the two major mounting standards in amateur astronomy, the other being the larger Losmandy \"D-style\" plate. The V-Series ensures compatibility across a wide range of manufacturers' 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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Profile\u003c\/td\u003e\n\u003ctd\u003eV-Series (Vixen-style)\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 V-Series Universal Dovetail Plate - 150mm\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\u003cp\u003eThis product does not require specific software or drivers. No downloads are available.\u003c\/p\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":"Red","offer_id":44968071201053,"sku":"ASK-ASVDP150R","price":57.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/VDP150.jpg?v=1700325516"},{"product_id":"askar-v-series-universal-dovetail-plate-300mm","title":"Askar V-Series Universal Dovetail Plate - 300mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e300mm Vixen-Style Dovetail Plate\u003c\/li\u003e\n\u003cli\u003eUniversal Mounting Slots and Holes\u003c\/li\u003e\n\u003cli\u003eIdeal for Telescope Tube Rings and Guide Scopes\u003c\/li\u003e\n\u003cli\u003eLightweight and Rigid Construction\u003c\/li\u003e\n\u003cli\u003eCompatible with V-Series Mount Saddles\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-Series Universal Dovetail Plate - 300mm\u003c\/h2\u003e\n\u003cp\u003eThe Askar V-Series Universal Dovetail Plate provides a rigid 300mm mounting platform for securely attaching telescope tube rings, guide scopes, and cameras to any Vixen-compatible equatorial or alt-azimuth mount.\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 300mm Platform for Flexible Rig Configuration\u003c\/h3\u003e\n\u003cp\u003eThe extended 300mm length is designed to accommodate complex imaging setups, allowing you to mount both your main optical tube and a separate guide scope on a single, stable bar. The array of slots and threaded holes offers flexible positioning, letting you achieve perfect balance and attach accessories exactly where you need them.\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\u003eV-Series vs. D-Series: Choosing the Right Standard\u003c\/h3\u003e\n\u003cp\u003eThis plate adheres to the Vixen-style (V-series) dovetail standard, which is narrower than the larger Losmandy (D-series) format. V-series plates are the default for most entry-level to intermediate mounts, offering a secure connection for lighter telescope setups without adding unnecessary weight. Before purchasing, confirm your mount's saddle is designed for V-series dovetails.\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 300mm length of the Askar V-Series plate help when balancing an 80mm refractor with a guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 300mm length provides ample room to adjust the spacing between your main telescope's tube rings. This allows you to shift the entire optical assembly forward or backward in the mount saddle to achieve perfect balance in Right Ascension, which is critical for accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount a DSLR and lens directly to the Askar 300mm dovetail plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You can attach a DSLR and lens to the plate using a standard 1\/4\"-20 screw through one of the milled slots. This provides a much more stable platform for wide-field astrophotography than a standard tripod ball head, especially when mounted on an equatorial tracking mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this Askar V-Series plate and a D-series (Losmandy-style) plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is size and capacity. \u003cstrong\u003eV-series plates\u003c\/strong\u003e are narrower and designed for lighter payloads and smaller mounts (e.g., Celestron AVX, Sky-Watcher HEQ5). \u003cstrong\u003eD-series plates\u003c\/strong\u003e are wider and thicker, intended for heavier telescopes and higher-capacity mounts. They are not interchangeable unless your mount has a dual V\/D-series saddle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat tools are needed to attach telescope rings to the Askar V-Series 300mm plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTypically, you will only need the hex keys or Allen wrenches that correspond to the bolts supplied with your specific telescope tube rings. The plate itself does not require any special tools for installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 300mm dovetail long enough to mount a Celestron C6 SCT alongside a guidescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 300mm length generally provides enough real estate to mount a compact Schmidt-Cassegrain like a C6 and a small guidescope side-by-side or piggyback. The multiple slots ensure you have the flexibility to position both for optimal balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are there slots in addition to threaded holes on the Askar V-series plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSlots offer continuous, fine-tuned adjustment for the spacing between tube rings, which is essential for accommodating different telescope lengths and achieving precise balance. Threaded holes provide fixed, repeatable mounting points for accessories that use standard bolt patterns.\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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Style\u003c\/td\u003e\n\u003ctd\u003eV-Series (Vixen-compatible)\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 V-Series Universal Dovetail Plate - 300mm\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":"Red","offer_id":44968071266589,"sku":"ASK-ASVDP300R","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/25fa4114-c005-4483-8e8f-6eaa9baeb617-1.jpg?v=1743690386"},{"product_id":"askar-6nm-color-magic-ha-oiii-sii-oiii-d1-d2-filter-package","title":"Askar 6nm Colour Magic Ha\/OIII \u0026 SII\/OIII (D1+D2) Filter Package","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e6nm Dual-Bandpass Filter Set\u003c\/li\u003e\n\u003cli\u003eIncludes D1 (Hα+OIII) and D2 (SII+OIII) Filters\u003c\/li\u003e\n\u003cli\u003eEnables SHO-like imaging with color cameras\u003c\/li\u003e\n\u003cli\u003eHigh contrast for light-polluted skies\u003c\/li\u003e\n\u003cli\u003eExcellent halo control around bright stars\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 6nm Colour Magic Ha\/OIII \u0026amp; SII\/OIII (D1+D2) Filter Package\u003c\/h2\u003e\n\u003cp\u003eThe Askar 6nm Colour Magic Filter Package uses a tight 6nm bandpass to capture stunning narrowband images with your color camera. This innovative set includes two filters: a 6nm D1 (Hα\/OIII) and a 6nm D2 (SII\/OIII), designed to work together to isolate the three most critical emission nebula wavelengths without requiring a monochrome camera.\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 2-Filter System for 3-Band Narrowband Imaging\u003c\/h3\u003e\n\u003cp\u003eThis package redefines narrowband imaging for one-shot-color (OSC) camera users by splitting the data acquisition across two specialized filters. The first filter, D1, captures Hydrogen-alpha and Oxygen-III, the dominant signals in most emission nebulae. The second filter, D2, captures Sulphur-II and Oxygen-III, adding the final dataset needed for creating images with the celebrated \"Hubble Palette\" color scheme.\u003c\/p\u003e\n\u003cp\u003eBy capturing data through these two filters and combining the results during processing, you can produce detailed, multi-wavelength images that were previously the exclusive domain of more complex monochrome setups. This approach simplifies the imaging process while still delivering rich, high-contrast results.\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\u003e6nm Bandpass: Maximum Contrast and Halo Control\u003c\/h3\u003e\n\u003cp\u003eThe 6nm bandpass on each filter is engineered to aggressively reject unwanted light from urban light pollution, moonlight, and natural skyglow. This extreme signal isolation dramatically increases the contrast between your nebula target and the background sky, revealing faint structures and details that would otherwise be lost. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-Sky from the City:\u003c\/strong\u003e The narrow 6nm window allows you to capture high-quality deep-sky data even from heavily light-polluted locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalo Suppression:\u003c\/strong\u003e Askar's design provides excellent control of halos around bright stars, a common issue with narrowband filters. This ensures clean star profiles and preserves the integrity of your target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Optics Ready:\u003c\/strong\u003e While not designed exclusively for high-speed systems, these filters have been tested to perform well with modern, fast astrographs, maintaining signal strength and star quality.\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 Duo-Filter vs. Mono Imaging: A New Workflow for Color Cameras\u003c\/h3\u003e\n\u003cp\u003eThe Colour Magic filter set offers a compelling alternative to the traditional monochrome imaging workflow. While a mono camera with a filter wheel provides the highest level of control, the Askar D1+D2 package delivers a significant portion of that capability with far less complexity and cost.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYour Advantage (Askar D1+D2):\u003c\/strong\u003e You use the color camera you already own. Data acquisition is simplified to just two sessions (one for each filter), and processing is more straightforward than combining separate L, R, G, B, H, S, and O channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Mono Advantage:\u003c\/strong\u003e A monochrome setup allows for capturing data through each channel separately, offering maximum flexibility in processing and the ability to optimize exposure times for each emission line. This is a more involved, but ultimately more powerful, process.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the OSC imager looking to step into the world of narrowband without investing in a full mono rig, the Askar Colour Magic package is the ideal 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 6nm Colour Magic filter set work with a one-shot-color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou take two sets of exposures: one with the \u003cstrong\u003eD1 (Hα+OIII) filter\u003c\/strong\u003e and another with the \u003cstrong\u003eD2 (SII+OIII) filter\u003c\/strong\u003e. In processing software, you can separate the color channels from each set of images. The red channel from the D1 data contains your Hα signal, the red channel from D2 contains your SII, and the green\/blue channels from both contain your OIII. This allows you to combine them into a full SHO (Hubble Palette) image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of having OIII on both the Askar D1 and D2 filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCapturing Oxygen-III signal with both filters ensures you gather a very strong and clean OIII dataset. This is beneficial because OIII is often a weaker signal than H-alpha. Having it present in both master files gives you more flexibility and higher signal-to-noise ratio when processing your final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use just the Askar 6nm D1 (Hα+OIII) filter by itself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The D1 filter on its own is a powerful dual-narrowband filter, excellent for capturing emission nebulae like the Orion Nebula (M42) or Lagoon Nebula (M8) in high contrast. Using it alone will produce images with characteristic red and blue\/teal hues, similar to other popular dual-band filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the Askar 6nm Colour Magic set to image the Eagle Nebula (M16) with my f\/5 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Pillars of Creation in the Eagle Nebula (M16) are a perfect target. First, capture a series of long exposures with the D1 filter to get your Hα and OIII data. Then, swap to the D2 filter and capture another series of exposures to get your SII data. The 6nm bandpass will help define the intricate dark dust lanes against the glowing gas, even under moderately light-polluted skies with your f\/5 system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 6nm filters work well on the Cygnus Loop (NGC 6960) from my Bortle 7 backyard?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal scenario for these filters. The Cygnus Loop (Veil Nebula complex) is rich in both Hα and OIII. The tight 6nm bandpass of the Askar filters will effectively block the strong light pollution from a Bortle 7 zone, allowing the delicate, filamentary structure of the supernova remnant to stand out with impressive contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Askar 6nm filter set replace a traditional SHO filter set for mono cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly. This set is designed to give \u003cstrong\u003ecolor camera users\u003c\/strong\u003e access to SHO-like color palettes. A traditional SHO filter set for monochrome cameras offers more control over the individual signals and is still the standard for advanced imagers. The Askar Colour Magic set provides a simpler, more accessible workflow to achieve similar results without needing a mono camera and filter wheel.\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\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDual-Band Narrowband Filter Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e6nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter 1 (D1)\u003c\/td\u003e\n\u003ctd\u003eH-alpha \/ OIII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter 2 (D2)\u003c\/td\u003e\n\u003ctd\u003eSulphur-II \/ OIII\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":44968075297053,"sku":"ASK-CM-D1D2","price":875.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-Color-Magic-D1-D2__81140.1678398625.1280.1280.jpg?v=1684348734"},{"product_id":"askar-0-76x-reducer-for-80phq","title":"Askar 0.76x Reducer for 80PHQ","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e0.76x reduction factor specifically for the Askar 80PHQ\u003c\/li\u003e\n\u003cli\u003eReduces focal ratio from f\/7.5 to a faster f\/5.7\u003c\/li\u003e\n\u003cli\u003eCreates a new focal length of 456mm\u003c\/li\u003e\n\u003cli\u003eGenerates a 44mm image circle, fully illuminating full-frame sensors\u003c\/li\u003e\n\u003cli\u003eMaintains a standard 55mm backfocus for easy camera connection\u003c\/li\u003e\n\u003cli\u003eFeatures an integrated M48x0.75 filter thread\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 0.76x Reducer for 80PHQ\u003c\/h2\u003e\n\u003cp\u003eThis Askar 0.76x Reducer is engineered specifically for the 80PHQ astrograph, transforming its native f\/7.5 optics into a faster f\/5.7 imaging system with a 456mm focal length. The 3-element air-spaced triplet design delivers a corrected 44mm image circle, fully illuminating full-frame sensors while maintaining a standard 55mm backfocus for straightforward integration with your camera and 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\u003eA Triplet Design for f\/5.7 Speed and a 456mm Focal Length\u003c\/h3\u003e\n\u003cp\u003eBy decreasing the focal ratio of the 80PHQ from f\/7.5 to f\/5.7, this 0.76x reducer shortens required exposure times by approximately 42%, allowing you to capture more signal in less time. The resulting 456mm focal length provides a wider field of view, ideal for framing large nebulae and star clusters. The internal 3-element triplet lens configuration ensures that the wider field remains sharp and well-corrected across the 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\u003eFull-Frame Imaging: 44mm Image Circle and Standard 55mm Backfocus\u003c\/h3\u003e\n\u003cp\u003eThe reducer is designed to produce a 44mm image circle, providing full, unvignetted illumination for cameras with full-frame (36x24mm) sensors. It connects directly to the 80PHQ's focuser and features a standard 55mm backfocus, simplifying the process of attaching a DSLR, mirrorless, or dedicated astronomy camera with the correct spacing. An integrated M48x0.75 (2-inch) filter thread allows you to easily add light pollution or narrowband filters into your imaging train without needing a separate filter drawer.\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 Askar 0.76x Reducer do for my 80PHQ telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 0.76x Reducer converts your Askar 80PHQ from its native f\/7.5 focal ratio to a faster \u003cstrong\u003ef\/5.7\u003c\/strong\u003e. This shortens your exposure times and provides a wider field of view with a new focal length of \u003cstrong\u003e456mm\u003c\/strong\u003e, making it better suited for capturing large deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 44mm image circle of this reducer large enough for my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e44mm image circle\u003c\/strong\u003e is specifically designed to be larger than the diagonal of a standard full-frame sensor (which is approximately 43.3mm). This ensures your full-frame camera sensor is fully illuminated without vignetting caused by the reducer.\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 0.76x Reducer for the 80PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer provides a standard \u003cstrong\u003e55mm backfocus\u003c\/strong\u003e from its rearmost thread. This is the standard spacing for most cooled astronomy cameras when used with a filter wheel, or for a DSLR\/mirrorless camera with its corresponding M48 T-ring. You simply add the necessary M48 spacers to achieve the 55mm distance to your camera's sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-Q\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the f\/5.7 speed help when imaging the Andromeda Galaxy (M31) with the 80PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Andromeda Galaxy (M31) is a very large target that benefits from the wider \u003cstrong\u003e456mm focal length\u003c\/strong\u003e. More importantly, the faster \u003cstrong\u003ef\/5.7\u003c\/strong\u003e optics gather light more quickly than the native f\/7.5, allowing you to capture the faint outer arms and dust lanes of the galaxy with shorter individual exposures, improving your overall signal-to-noise ratio in a single imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the Askar 0.76x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reducer has a built-in \u003cstrong\u003eM48x0.75 (2-inch) filter thread\u003c\/strong\u003e on the camera side, allowing you to easily screw in standard 2-inch mounted filters for light pollution reduction or narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 0.76x reducer work on telescopes other than the Askar 80PHQ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this reducer is specifically designed and optically matched to work with the Askar 80PHQ astrograph. Using it on other telescopes will likely result in poor optical correction, field curvature, and an inability to reach focus.\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\u003eReducer Type\u003c\/td\u003e\n\u003ctd\u003e0.76x Focal Reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd\u003eAskar 80PHQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResulting Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd\u003e456mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e3-element, air-spaced triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (2-inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e68mm\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 0.76x Reducer for 80PHQ\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":44968076083485,"sku":"ASK-ASKAR80R","price":368.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Askar-80PHQ-Reducer__01912.1679584601.1280.1280.jpg?v=1684348743"},{"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-fma135-135mm-f-4-5-apo-lens","title":"Askar FMA135 135mm f\/4.5 APO Lens","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e135mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e30mm Aperture\u003c\/li\u003e\n\u003cli\u003eSextuplet APO Optical Design\u003c\/li\u003e\n\u003cli\u003e280g Total Weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eAskar FMA135 135mm f\/4.5 APO Lens\u003c\/h2\u003e\n\u003cp\u003eThe Askar FMA135 combines a 30mm aperture with a 135mm focal length into a fast f\/4.5 optical system designed specifically for wide-field astrophotography. Its advanced sextuplet air-spaced APO objective, which includes one ED glass element, is housed in a compact 113mm body that weighs only 280g. The design provides a native M42×0.75 thread for secure camera attachment and includes a 1.25\" adapter for use as a visual finder or guidescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSextuplet f\/4.5 APO Optics: 6-Element Flat-Field Design\u003c\/h3\u003e\n\u003cp\u003eUnlike standard telephoto lenses or simple refractors, the FMA135 is a dedicated astrograph with an integrated 6-element optical design. This consists of a three-element (triplet) objective lens and a three-element flattener, working in concert to deliver sharp, color-pure stars across a wide, flat field suitable for modern sensors.\u003c\/p\u003e\n\u003cp\u003eThe inclusion of one ED (Extra-low Dispersion) glass element in the objective significantly suppresses chromatic aberration, eliminating the distracting blue or purple halos around bright stars. The native f\/4.5 focal ratio allows you to capture faint details in large nebulae and star fields with significantly shorter exposure times compared to slower optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e135mm Wide-Field Astrophotography: From Nebulae to Comets\u003c\/h3\u003e\n\u003cp\u003eWith its 135mm focal length, the FMA135 is perfectly suited for capturing some of the sky's largest and most impressive targets. Entire constellations, the vast dust lanes of the Milky Way, the full expanse of the Andromeda Galaxy (M31), or the North American Nebula (NGC 7000) can be framed with room to spare, especially on an APS-C sensor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat Field Imaging:\u003c\/strong\u003e The integrated flattener ensures that stars remain tight, round points from the center to the corners of your image, a critical feature many standard camera lenses lack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Connections:\u003c\/strong\u003e A rear M42×0.75 male thread provides a rigid, threaded connection to your astronomy camera or DSLR T-ring, preventing tilt or flexure during long exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Ready:\u003c\/strong\u003e The front of the lens features a standard 1.25\" filter thread, allowing you to use light pollution or nebula filters to enhance your images directly at the objective.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 280g Multi-Role Instrument: Astrograph, Guider, and Telephoto Lens\u003c\/h3\u003e\n\u003cp\u003eWeighing only 280g with its mounting ring, the FMA135 is an exceptionally versatile instrument that excels in multiple roles. Its minimal weight makes it an ideal imaging optic for small, portable star trackers where every gram counts.\u003c\/p\u003e\n\u003cp\u003eUsing the included 1.25\" adapter, the FMA135 transforms into a high-quality guidescope with a 135mm focal length, perfect for guiding main telescopes with focal lengths up to 1000mm. It can also serve as a premium straight-through finderscope with a low-power 1.25\" eyepiece. For terrestrial photographers, it functions as a compact, manual-focus 135mm telephoto lens with outstanding optical correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFMA135 vs. Camera Lenses: An Astro-Specific Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a high-end 135mm camera lens might offer a faster f-ratio on paper, the FMA135 holds a distinct advantage for astrophotography. Camera lenses are often designed for daytime subjects and must be stopped down to f\/2.8 or f\/4 to correct for coma and astigmatism that distort stars at the edge of the frame, negating their speed advantage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor's Edge:\u003c\/strong\u003e Premium 135mm camera lenses can be faster, some reaching f\/1.8 or f\/2.0, allowing for more light gathering in a single exposure if optical compromises are acceptable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar's Advantage:\u003c\/strong\u003e The FMA135 is optimized for a flat, color-corrected field at its native f\/4.5. It delivers superior star shapes to the edge of the frame without being stopped down and features astronomy-specific mechanics like a locking helical focuser, M42 camera threads, and integrated filter compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of objects can I image with the Askar FMA135 on a star tracker?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e is ideal for large deep-sky objects and constellations. Its 135mm focal length allows you to capture vast targets like the Andromeda Galaxy (M31), the Orion Nebula (M42) region including the Horsehead Nebula, the North American Nebula (NGC 7000), and the Rho Ophiuchi cloud complex in a single frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar FMA135 as a guidescope for my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With a focal length of 135mm, the \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e is an excellent guidescope for telescopes with focal lengths up to and beyond 1000mm, including 8\" Schmidt-Cassegrains. Simply attach your 1.25\" guide camera using the included adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat camera connection does the Askar FMA135 have?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e has a standard \u003cstrong\u003eM42×0.75 male thread\u003c\/strong\u003e on the rear. This allows direct, secure connection to most dedicated astronomy cameras and to DSLR or mirrorless cameras via a standard, camera-specific M42 T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar FMA135 a true apochromatic (APO) telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The objective is a triplet design that includes one element of \u003cstrong\u003eED (Extra-low Dispersion) glass\u003c\/strong\u003e to provide excellent chromatic aberration correction. The complete optical system is a sextuplet (6-element) design, engineered to deliver color-pure, high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the Askar FMA135?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFocusing is achieved with a smooth, precise helical focuser integrated into the objective lens assembly. You rotate the forward part of the lens to achieve sharp focus. This mechanism is more robust and stable than typical camera lens focusing systems for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 1.25\" filters with the FMA135?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the front of the \u003cstrong\u003eAskar FMA135\u003c\/strong\u003e lens barrel is equipped with a female thread designed to accept standard 1.25\" astronomy filters. This allows you to easily add light pollution, narrowband, or color filters to your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e135mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Design\u003c\/td\u003e\n\u003ctd\u003eSextuplet Air-Spaced APO (with one ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e113mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e280g (Including tube ring \u0026amp; dovetail plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImaging Connection\u003c\/td\u003e\n\u003ctd\u003eM42×0.75 Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual\/Guiding Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFMA135 Lens Assembly\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Tube Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Visual Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Screws\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 5\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Drivers\/Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":46790462996765,"sku":"ASK-FMA135","price":461.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-FMA135.jpg?v=1696520355"},{"product_id":"askar-1x-field-flattener-for-103apo","title":"Askar 1x Field Flattener for 103APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects field curvature and coma for the Askar 103APO\u003c\/li\u003e\n\u003cli\u003eMaintains the native 700.4mm focal length and f\/6.8 ratio\u003c\/li\u003e\n\u003cli\u003eTriplet optical design delivers sharp stars edge-to-edge\u003c\/li\u003e\n\u003cli\u003eProvides a 44mm full-frame corrected image circle\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus from the M48 thread\u003c\/li\u003e\n\u003cli\u003eIncludes M54 and M48 camera adapters and a 2\" filter thread\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 1x Field Flattener for 103APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar 1x Field Flattener is engineered specifically for the 103APO refractor, correcting field curvature across a 44mm full-frame image circle while maintaining the telescope's native 700.4mm focal length and f\/6.8 focal ratio. This 0.58kg flattener utilizes a triplet optical design to deliver sharp stars to the edge of the frame and integrates into any standard imaging train with 55mm of back focus from its M48 male thread.\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 for the Askar 103APO\u003c\/h3\u003e\n\u003cp\u003eThis flattener's primary function is to eliminate the field curvature and coma inherent in a refracting telescope, ensuring star points remain perfectly round across the entire sensor. The triplet air-spaced lens design achieves this correction over a 44mm image circle, making it an essential accessory for imagers using full-frame DSLR, mirrorless, or dedicated astronomy cameras with the Askar 103APO.\u003c\/p\u003e\n\u003cp\u003eBy using a 1x magnification factor, the flattener preserves the telescope's native 700.4mm focal length and f\/6.8 focal ratio. This allows you to capture wide-field targets with the maximum resolution and light-gathering power the 103APO optics can provide, but with the critical addition of a perfectly flat field.\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 Back Focus and Standardized Connections\u003c\/h3\u003e\n\u003cp\u003eAskar designed this flattener for seamless integration into modern imaging setups. It provides the industry-standard 55mm of back focus measured from the base of its male M48x0.75 thread, which simplifies connecting most cameras and filter wheels without complex calculations. Simply add your camera's T-ring or standard spacers to reach the 55mm distance for optimal performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Adapters:\u003c\/strong\u003e The camera side includes both M54×0.75 and M48×0.75 threaded adapters, providing direct attachment for a wide range of cameras, filter drawers, and off-axis guiders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Filter Cell:\u003c\/strong\u003e A built-in M48x0.75 thread inside the adapter acts as a 2-inch filter cell, allowing you to mount light pollution or narrowband filters directly within the flattener itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Build:\u003c\/strong\u003e The entire housing is CNC-machined for precise optical alignment and weighs a solid 0.58kg, ensuring no flexure in the imaging train.\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 purpose of the Askar 1x Flattener for the 103APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 1x Flattener is designed to correct optical aberrations like \u003cstrong\u003efield curvature\u003c\/strong\u003e and \u003cstrong\u003ecoma\u003c\/strong\u003e in the Askar 103APO telescope. This ensures that stars are sharp and point-like across the entire imaging sensor, which is crucial for astrophotography, especially with large-format cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 1x Flattener change the 103APO's focal length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. As a \u003cstrong\u003e1x flattener\u003c\/strong\u003e, it does not reduce or extend the focal length. When attached to the Askar 103APO, the telescope maintains its native \u003cstrong\u003e700.4mm focal length\u003c\/strong\u003e and \u003cstrong\u003ef\/6.8 focal ratio\u003c\/strong\u003e, simply delivering a corrected, flat field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat cameras are compatible with the Askar 1x Flattener's 55mm back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e is compatible with most imaging systems. This includes:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDSLR and mirrorless cameras with a standard T-ring adapter.\u003c\/li\u003e\n\u003cli\u003eDedicated astronomy cameras when combined with the appropriate spacers to achieve the 55mm distance.\u003c\/li\u003e\n\u003c\/ul\u003e\nThe flattener includes both M54 and M48 threads to connect to a wide variety of accessories.\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 1x Flattener for the 103APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar 1x Flattener has a built-in \u003cstrong\u003eM48x0.75 filter thread\u003c\/strong\u003e on the camera side. This allows you to directly screw in standard 2-inch astronomy filters for light pollution suppression or narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 1x Flattener improve images of the Andromeda Galaxy (M31) with the 103APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large target like the Andromeda Galaxy (M31) will stretch across the entire field of a full-frame sensor when imaged with the Askar 103APO. Without this flattener, stars at the edges of the galaxy would appear elongated or out of focus. The \u003cstrong\u003eAskar 1x Flattener\u003c\/strong\u003e ensures that the outer spiral arms and surrounding star fields of M31 are just as sharp as the galactic core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 1x Flattener fully illuminate my full-frame sensor on an f\/6.8 system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The flattener is specifically designed to produce a corrected and illuminated \u003cstrong\u003e44mm image circle\u003c\/strong\u003e. This is large enough to cover a standard full-frame sensor (which has a 43.3mm diagonal) without vignetting, making it a perfect match for the Askar 103APO's f\/6.8 optics.\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\u003e3-Element Air-Spaced (Triplet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e1x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd\u003eAskar 103APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length with 103APO\u003c\/td\u003e\n\u003ctd\u003e700.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio with 103APO\u003c\/td\u003e\n\u003ctd\u003ef\/6.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrected Image Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from M48x0.75 male thread base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-Side Threads\u003c\/td\u003e\n\u003ctd\u003eM54x0.75 \u0026amp; M48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Filter Threads\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (2-inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.58 kg\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_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":46861263405341,"sku":"ASK-ASKFL10310","price":307.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-103APO-Field-Flattener-ASKFL10310-1.png?v=1697487604"},{"product_id":"askar-0-8x-reducer-for-103apo","title":"Askar 0.8x Reducer for 103APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces telescope focal ratio to a faster f\/5.44\u003c\/li\u003e\n\u003cli\u003eShortens 103APO focal length to 560.32mm for wider fields\u003c\/li\u003e\n\u003cli\u003eTriplet optical design provides field flattening\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus for easy camera connection\u003c\/li\u003e\n\u003cli\u003eIntegrated M48x0.75 threads for 2\" filters\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 0.8x Reducer for 103APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar 0.8x Reducer is engineered specifically for the Askar 103APO, transforming it into a faster f\/5.44 imaging system and shortening its focal length to 560.32mm for wider fields of view. This triplet reducer maintains a standard 55mm back focus from its M48 thread and weighs just 0.48kg, adding minimal load to the focuser while significantly increasing light-gathering speed.\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 Optics: A Faster f\/5.44 System for the 103APO\u003c\/h3\u003e\n\u003cp\u003eBy reducing the 103APO's native focal ratio to f\/5.44, this corrector significantly cuts down required exposure times, allowing you to capture more signal on faint targets in a single session. The triplet optical design also acts as a field flattener, ensuring sharp, point-like stars across a full-frame sensor, which is critical when imaging expansive targets like the North American Nebula (NGC 7000) or the Heart and Soul Nebulae (IC 1805 and IC 1848).\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\u003eMechanical Connectivity: 55mm Back Focus for Standardized Imaging Trains\u003c\/h3\u003e\n\u003cp\u003eThis reducer is designed for straightforward integration into your existing setup. It provides the industry-standard 55mm of back focus from the base of its M48 male thread, simplifying the connection of DSLRs (with a standard T-ring) and dedicated astronomy cameras with filter wheels and off-axis guiders. The rear of the reducer includes both M54×0.75 and M48×0.75 adapters, and a built-in M48×0.75 thread allows for direct installation of 2-inch filters without adding extra spacing components.\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 Askar 0.8x Reducer do for my 103APO telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar 0.8x Reducer shortens the focal length of your 103APO to \u003cstrong\u003e560.32mm\u003c\/strong\u003e and increases its speed to \u003cstrong\u003ef\/5.44\u003c\/strong\u003e. This provides a wider field of view, allowing you to fit larger celestial objects into your frame, and reduces exposure times, enabling you to collect data on faint nebulae and galaxies more efficiently.\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 103APO 0.8x Reducer to achieve the correct 55mm back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer provides \u003cstrong\u003e55mm of back focus\u003c\/strong\u003e from the base of the included M48 male adapter thread. To achieve this spacing, you simply add extension tubes or accessories between the reducer and your camera sensor until the total distance is 55mm. A typical DSLR with a T-ring already has approximately 55mm of spacing, making the connection direct.\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 103APO 0.8x Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reducer features an integrated \u003cstrong\u003eM48x0.75 female thread\u003c\/strong\u003e on the camera side, which is the standard for 2-inch astronomy filters. You can thread your filters directly into the reducer for light pollution suppression or narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar 103APO 0.8x Reducer suitable for planetary imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile technically usable, a reducer is not ideal for planetary imaging. Reducers decrease focal length to capture wider fields, which is the opposite of the high magnification needed to resolve detail on planets like Jupiter and Saturn. For planetary work, you should use the Askar 103APO at its native focal length or with a Barlow lens to increase magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 103APO 0.8x Reducer improve imaging of large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt its native focal length, the Askar 103APO may be too narrow to frame the entire Andromeda Galaxy (M31) and its satellite galaxies with a larger sensor. By reducing the focal length to \u003cstrong\u003e560.32mm\u003c\/strong\u003e, the reducer widens the field of view, allowing you to capture the full galactic structure in a single frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this reducer provide a flat field for my full-frame DSLR or CMOS camera on the Askar 103APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003etriplet\u003c\/strong\u003e optical design of the Askar 0.8x Reducer is engineered to provide field flattening that illuminates a full-frame sensor. This ensures that stars remain sharp and round from the center of your image all the way to the corners, which is essential for creating high-quality astrophotographs.\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\u003eReduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.8x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinal Focal Length (on 103APO)\u003c\/td\u003e\n\u003ctd\u003e560.32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinal Focal Ratio (on 103APO)\u003c\/td\u003e\n\u003ctd\u003ef\/5.44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTriplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from M48 thread base)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.48 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-End Threads\u003c\/td\u003e\n\u003ctd\u003eM54×0.75, with M48×0.75 adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (for 2\" filters)\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_103APO_0.8x_Reducer_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":46861341458717,"sku":"ASK-ASKRE10308","price":307.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-103APO-0-8x-Reducer-ASKRE10308-1.png?v=1697488015"},{"product_id":"askar-0-6x-reducer-for-103apo","title":"Askar 0.6x Reducer for 103APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTransforms Askar 103APO to an f\/4.08, 420.24mm focal length system\u003c\/li\u003e\n\u003cli\u003eQuadruplet optical design provides field flattening for full-frame sensors\u003c\/li\u003e\n\u003cli\u003eStandard 55mm back focus for easy camera and accessory integration\u003c\/li\u003e\n\u003cli\u003eIncludes M68, M54, and M48 adapters for versatile camera connection\u003c\/li\u003e\n\u003cli\u003eIntegrated M48x0.75 thread for use with 2\" filters\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 0.6x Reducer for 103APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar 0.6x Reducer for 103APO transforms the telescope into a fast f\/4.08 astrograph, shortening the focal length to 420.24mm for capturing vast celestial targets. This dedicated quadruplet reducer is optically matched to the 103APO, delivering a flat field and maintaining sharp stars from edge to edge while adhering to a standard 55mm back focus distance for 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\u003eTransforming the 103APO to an f\/4.08 Astrograph\u003c\/h3\u003e\n\u003cp\u003eBy reducing the native focal ratio to f\/4.08, this accessory dramatically cuts required exposure times, allowing you to gather more signal in less time. The quadruplet optical design not only reduces the focal length but also acts as a field flattener, correcting for optical aberrations and ensuring pinpoint stars across a wide, flat image circle suitable for full-frame cameras. At a focal length of 420.24mm, you can frame large emission nebulae like the North American Nebula (NGC 7000) or the entire Andromeda Galaxy (M31) with ease.\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 Detachable-Tube Design for f\/4 Speed\u003c\/h3\u003e\n\u003cp\u003eAchieving this faster focal ratio requires a unique mechanical integration with the Askar 103APO. To use the 0.6x reducer, you must detach the rear section of the main telescope tube, effectively shortening the instrument to achieve focus. This purpose-built design ensures perfect spacing and optical alignment. The reducer itself adds 0.98kg to your imaging setup, a factor to consider when balancing your mount for precise tracking.\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 Back Focus with M48, M54, and M68 Adapters\u003c\/h3\u003e\n\u003cp\u003eThe Askar 0.6x Reducer simplifies camera connection by using the industry-standard 55mm back focus distance from the base of its M48 male thread. This compatibility works seamlessly with most DSLRs (with a standard T-ring) and dedicated astronomy cameras. For maximum flexibility, the reducer includes a set of adapters for M68×1, M54×0.75, and M48×0.75 threads, ensuring you can connect a wide variety of cameras, filter wheels, and off-axis guiders. The M48 adapter also features an internal thread for mounting 2-inch filters directly.\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 0.6x reducer change the Askar 103APO's imaging characteristics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt transforms the Askar 103APO into a faster, wider-field instrument. The focal ratio is reduced to \u003cstrong\u003ef\/4.08\u003c\/strong\u003e and the focal length to \u003cstrong\u003e420.24mm\u003c\/strong\u003e. This allows for significantly shorter exposure times and the ability to frame much larger deep-sky objects in a single shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to modify my Askar 103APO to use this 0.6x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar 103APO features a detachable tube design specifically for this reducer. You must remove the rear section of the optical tube to shorten the telescope, which allows the reducer to reach focus and function correctly. This is a required step for proper installation.\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 103APO 0.6x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe required back focus is a standard \u003cstrong\u003e55mm\u003c\/strong\u003e. This distance is measured from the base of the M48 male thread on the reducer to your camera's sensor. Most dedicated astronomy cameras and DSLR\/mirrorless cameras with T-rings are designed around this standard distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" filters with the Askar 103APO 0.6x reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The included M48 adapter has an internal \u003cstrong\u003eM48×0.75 thread\u003c\/strong\u003e, which allows you to screw in standard 2-inch astronomy filters directly. This is ideal for adding light pollution or narrowband filters to your imaging train without needing a separate filter drawer or wheel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar 103APO 0.6x reducer help when imaging the North American Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe North American Nebula is a very large target, spanning several degrees of the sky. The reducer's \u003cstrong\u003e420.24mm\u003c\/strong\u003e focal length provides a much wider field of view than the native 103APO, allowing you to capture the entire nebula and the adjacent Pelican Nebula (IC 5070) in a single frame with most full-frame or APS-C sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the f\/4.08 speed from this Askar reducer beneficial for imaging broadband targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The fast \u003cstrong\u003ef\/4.08\u003c\/strong\u003e focal ratio gathers light much more quickly than the native telescope. When imaging a broadband target like M31, this means you can capture faint outer dust lanes and details with shorter individual sub-exposures, improving your signal-to-noise ratio and reducing the impact of tracking errors or 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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eQuadruplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.6x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Length (103APO)\u003c\/td\u003e\n\u003ctd\u003e420.24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Ratio (103APO)\u003c\/td\u003e\n\u003ctd\u003ef\/4.08\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from base of M48 thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection Threads\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 (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.98kg\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_103APO_0.6x_Reducer_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":46861375701277,"sku":"ASK-ASKRE10306","price":461.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-103APO-0-6x-Reducer-ASKRE10306-1.png?v=1697488274"},{"product_id":"askar-32mm-f4-guide-scope","title":"Askar 32mm F4 Guide Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e32mm Aperture\u003c\/li\u003e\n\u003cli\u003e128mm Focal Length (f\/4)\u003c\/li\u003e\n\u003cli\u003eContains One ED Glass Element\u003c\/li\u003e\n\u003cli\u003ePrecision Helical Focuser\u003c\/li\u003e\n\u003cli\u003eWeighs only 303g\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 32mm F4 Guide Scope\u003c\/h2\u003e\n\u003cp\u003eThe Askar 32mm F4 Guide Scope packs precise optical design into a compact, 303g package ideal for portable astrophotography rigs. Its 32mm objective lens operates at a fast f\/4 focal ratio, delivering bright star fields to your guide camera. The 128mm focal length provides an effective image scale for accurate guiding with a wide range of imaging telescopes, from wide-field refractors to larger SCTs.\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\u003e32mm f\/4 ED Optics: Bright Stars for Accurate Guiding\u003c\/h3\u003e\n\u003cp\u003eFinding a suitable guide star is made simple with the scope's fast f\/4 optical system, which gathers ample light to make stars visible even in short exposures. The objective lens includes a piece of Extra-low Dispersion (ED) glass, which significantly reduces chromatic aberration. This ensures guide stars are rendered as sharp, tight points of light, allowing your autoguiding software to calculate a more accurate centroid for sub-pixel tracking precision.\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 Mechanics: 303g Body and 20mm Helical Focuser\u003c\/h3\u003e\n\u003cp\u003eWeighing just 303g, this guidescope adds minimal load to your mount, making it a perfect match for portable setups and star trackers where every gram counts. Focus is achieved via a non-rotating helical focuser that provides 20mm of travel. This mechanism allows for smooth, precise adjustments to achieve critical focus without any image shift, ensuring your guide camera remains perfectly aligned.\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\u003eFlexible Connectivity: 1.25\" and M42 Camera Support\u003c\/h3\u003e\n\u003cp\u003eThe Askar 32mm F4 Guide Scope is designed for broad compatibility with modern guide cameras. The focuser terminates in a standard 1.25\" holder for push-fit cameras and accessories. For a more secure, threaded connection, it also features a male M42x0.75 thread, accommodating nearly all guide cameras from major brands like ZWO and QHY.\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 32mm F4 Guide Scope's ED glass important for autoguiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eED glass element\u003c\/strong\u003e corrects for chromatic aberration, or color fringing. This creates sharper, more focused guide stars. Guiding software works by finding the exact center (centroid) of a star, and a tighter star profile without color bleed allows for more precise calculations and, ultimately, better tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the Askar 32mm F4 Guide Scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe scope uses a \u003cstrong\u003ehelical focuser\u003c\/strong\u003e. You simply rotate the knurled ring on the barrel to move the camera forward or backward. This design is very precise and prevents the camera from rotating, maintaining the orientation of your guide field. It offers 20mm of travel to accommodate various cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 303g weight of the Askar 32mm F4 Guide Scope suitable for a portable setup like a Sky-Watcher Star Adventurer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. At just \u003cstrong\u003e303g\u003c\/strong\u003e, it's one of the lighter guide scopes available. This minimal weight is a significant advantage for payload-limited setups like star trackers, as it leaves more capacity for your main camera and lens while reducing the chance of tracking errors caused by overloading the mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat types of guide cameras are compatible with the Askar 32mm F4 Guide Scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis guidescope is compatible with almost any standard autoguiding camera. It provides two connection methods:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" Barrel:\u003c\/strong\u003e For cameras that slide in like an eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42x0.75 Thread:\u003c\/strong\u003e For cameras that use a T-thread connection, ensuring a rigid, tilt-free attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 32mm F4 Guide Scope work with my 10\" f\/8 Ritchey-Chrétien telescope to guide on faint targets like the Triangulum Galaxy (M33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e128mm focal length\u003c\/strong\u003e provides a good image scale for guiding long focal length telescopes like an RC or SCT. More importantly, the fast \u003cstrong\u003ef\/4 focal ratio\u003c\/strong\u003e is a major benefit in these situations, as it helps pull in fainter guide stars from the sparse star fields often found around distant galaxies, increasing your chances of finding a suitable star anywhere you point.\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 f\/4 focal ratio on the Askar 32mm F4 Guide Scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage of an \u003cstrong\u003ef\/4 focal ratio\u003c\/strong\u003e is brightness. It concentrates starlight more effectively onto your guide camera's sensor compared to a slower scope (e.g., f\/6 or f\/7). This allows you to use shorter guide exposures, which leads to more responsive and accurate corrections from your mount.\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\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e128mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens\u003c\/td\u003e\n\u003ctd\u003eAir-spaced design with one ED element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Type\u003c\/td\u003e\n\u003ctd\u003eHelical Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" holder and M42x0.75 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e303g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Colors\u003c\/td\u003e\n\u003ctd\u003eBlack, Silver\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":"Black","offer_id":46861843366173,"sku":"ASK-ASKAR32GS-BK","price":150.0,"currency_code":"CAD","in_stock":true},{"title":"Silver","offer_id":46861843530013,"sku":"ASK-ASKAR32GS-SV","price":150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-32mm-Guide-scope.png?v=1697491395"},{"product_id":"askar-m54-m48-t-ring-for-canon-eos-r","title":"Askar M54\/M48 T-Ring for Canon EOS-R","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely adapts Canon EOS-R mirrorless camera bodies\u003c\/li\u003e\n\u003cli\u003eConnects to M54x0.75 and M48x0.75 threaded correctors\u003c\/li\u003e\n\u003cli\u003eIntegrated rotational adjuster for fine backfocus control\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined for rigidity and perfect alignment\u003c\/li\u003e\n\u003cli\u003eLaser-engraved scale for repeatable spacing adjustments\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 M54\/M48 T-Ring for Canon EOS-R\u003c\/h2\u003e\n\u003cp\u003eThe Askar M54\/M48 T-Ring for Canon EOS-R provides a solid, direct-thread connection between your camera and your telescope's M54 or M48 corrector, incorporating a fine adjustment mechanism to precisely set the critical backfocus distance required for sharp stars across a full-frame 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\u003eSecure Canon EOS-R to M54\/M48 Connection\u003c\/h3\u003e\n\u003cp\u003eThis adapter provides a rigid, flex-free link between your Canon EOS-R camera and the large-format correctors found on modern astrographs. By threading directly to the M54 or M48 threads on your flattener or reducer, it eliminates the potential for tilt that can occur with multi-part adapter chains, ensuring your camera sensor remains perfectly orthogonal to the optical axis.\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\u003eIntegrated Backfocus Adjustment for Perfect Stars\u003c\/h3\u003e\n\u003cp\u003eAchieving the precise backfocus distance specified by your field flattener or reducer is critical for sharp stars at the edge of the frame. This Askar T-Ring features an integrated rotational adjuster that allows you to make minute changes to your sensor spacing without guesswork or stacks of shims. A laser-engraved scale provides a clear reference for repeatable results, and two locking screws secure your setting once it's dialed in perfectly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Askar M54\/M48 T-Ring for Canon EOS-R used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter connects a \u003cstrong\u003eCanon EOS-R mount mirrorless camera\u003c\/strong\u003e to a telescope's field flattener or reducer that has either \u003cstrong\u003eM54x0.75\u003c\/strong\u003e or \u003cstrong\u003eM48x0.75\u003c\/strong\u003e male threads. It also includes a built-in mechanism to make fine adjustments to the backfocus, which is the critical distance between the corrector lens and the camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Askar telescopes is this Canon EOS-R adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is ideal for any Askar astrograph or other telescope that uses a field flattener or reducer with an M54 or M48 threaded output. It is particularly useful for full-frame imaging with refractors like the Askar FRA series or PHQ apos, ensuring a wide, unvignetted illumination of the Canon R sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is backfocus adjustment so critical when imaging with a Canon EOS-R on a refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eField flatteners and focal reducers are designed to work at a very specific distance from the camera sensor, often with a tolerance of less than a millimeter. If this distance is off, stars in the corners of your images of targets like the Pleiades (M45) will appear elongated or out of focus. This adapter's built-in adjustment allows you to precisely dial in that spacing for perfectly sharp stars across the entire full-frame sensor of your Canon EOS-R.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the adjustment feature on this Askar T-ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo adjust the backfocus, you first loosen the two small locking screws on the side of the adapter. You can then rotate the main body of the adapter to increase or decrease the spacing. The laser-engraved scale provides a reference for how much you have adjusted. Once you achieve perfect focus in the corners of your test images, you tighten the locking screws to fix the position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with my Canon EF-mount DSLR camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is specifically designed for the \u003cstrong\u003eCanon RF mount\u003c\/strong\u003e used on EOS-R series mirrorless cameras. It will not fit Canon DSLRs that use the older EF or EF-S mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the benefit of connecting to M54 threads instead of a standard M42 T-ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard M42 T-ring has a smaller inner diameter, which can cause vignetting (darkening of the corners) on full-frame sensors like the one in a Canon EOS-R. The larger \u003cstrong\u003eM54 thread\u003c\/strong\u003e provides a wider light path, ensuring the entire sensor is fully illuminated by the corrector, which is essential for capturing clean, evenly lit wide-field 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\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_M54-M48_Backfocus_Adjuster_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":46869946302749,"sku":"ASK-ASKADA54CA","price":60.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ASK-ASKADA54CA.jpg?v=1697573160"},{"product_id":"askar-6nm-color-magic-super-sii-oiii-d2-filter-2","title":"Askar 6nm Colour Magic Super SII\/OIII D2 Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual-band filter passing OIII (6.5nm) and SII (8.5nm) wavelengths\u003c\/li\u003e\n\u003cli\u003ePeak transmittance of 85% for maximum signal capture\u003c\/li\u003e\n\u003cli\u003eDesigned for color cameras to complete the \"Hubble Palette\" (SHO)\u003c\/li\u003e\n\u003cli\u003eStandard 2\" mounted format\u003c\/li\u003e\n\u003cli\u003e1.85mm thickness for near-parfocal performance with other filters\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 6nm Colour Magic Super SII\/OIII D2 Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Askar 6nm Colour Magic Super D2 Filter isolates the Sulfur-II and Oxygen-III emission lines, capturing the two signals often missing from standard color camera workflows. With a narrow 8.5nm bandpass for SII (672nm) and a 6.5nm bandpass for OIII (500.7nm), this filter achieves a peak transmittance of 85% to preserve faint nebula detail. Its ≥OD5 blocking across the 200-1100nm spectrum ensures high-contrast images by eliminating light pollution and stellar bloat, making it the essential second filter for creating full Hubble Palette images with a one-shot-color camera.\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\u003e6.5nm\/8.5nm Bandpasses with 85% Peak Transmittance\u003c\/h3\u003e\n\u003cp\u003eThe filter's dual-passband design is precisely engineered to isolate key emission lines. The 6.5nm FWHM centered on the 500.7nm OIII line and the slightly wider 8.5nm FWHM on the 672nm SII line provide an excellent balance between signal strength and contrast. This design allows the filter to deliver over 85% of the light from these specific wavelengths while aggressively rejecting city glow and other unwanted background signal.\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\u003eUnlocking Full SHO Imaging for Your Color Camera\u003c\/h3\u003e\n\u003cp\u003eFor imagers using color cameras, duo-narrowband filters that pass H-alpha and OIII are common, but they leave out the critical Sulfur-II data needed for the classic Hubble Palette (SHO). The Askar Super D2 filter is the missing link, designed specifically to be used in conjunction with an Hα\/OIII filter. By capturing SII and additional OIII data in a separate session, you can gather all three channels required to assemble a full SHO image without the complexity of a monochrome camera and 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\u003eOptical Precision: OD5 Blocking and 30\" Parallelism\u003c\/h3\u003e\n\u003cp\u003eHigh-end imaging requires more than just narrow bandpasses. The Super D2 filter is built on a substrate with a parallelism of 30 arcseconds, preventing image degradation or focus shift when inserted into the optical train. With an optical density (OD) of 5 or greater, it blocks unwanted wavelengths from 200nm to 1100nm, effectively eliminating artifacts from UV, IR, and broadband light pollution for cleaner, higher-contrast results.\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 D2 Workflow: Adding the SII Channel to Your Data\u003c\/h3\u003e\n\u003cp\u003eIntegrating this filter into your imaging routine is straightforward. First, capture your primary data using a standard Hα\/OIII duo-band filter. Then, swap to the Askar Super D2 filter to capture the SII and OIII channels. In post-processing, you can combine the Hα from your first session with the SII from your second, and use the OIII data from whichever set is cleaner, giving you a complete H-S-O dataset. This two-filter approach is a powerful and cost-effective method for bringing monochrome-style palette flexibility to your color camera, and performs well even on fast optical systems.\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 do I use the Askar 6nm D2 filter with my existing Hα\/OIII duo-band filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou use them in two separate imaging sessions. First, capture data with your Hα\/OIII filter. Then, without changing your framing, swap to the Askar D2 filter and capture more data for a similar total integration time. In processing, you will extract the Hα channel from the first session's data and the SII channel from the second session's data. You can then use the OIII data from either or both sessions to create a final SHO color image.\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 Askar D2 filter's 6.5nm OIII and 8.5nm SII bandpasses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e6.5nm OIII bandpass\u003c\/strong\u003e is very restrictive, which dramatically increases contrast and rejects moonlight or light pollution around the critical Oxygen-III lines. The slightly wider \u003cstrong\u003e8.5nm SII bandpass\u003c\/strong\u003e allows for a stronger signal from the typically fainter Sulfur-II line, helping to balance the data capture between the two wavelengths for better color results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 6nm D2 filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed exclusively for astrophotography. Its bandpasses are extremely narrow (6.5nm and 8.5nm), and the human eye cannot gather enough light through such a restrictive filter to see anything. It requires long exposures with a camera to build up an image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 6nm D2 filter work well with my f\/4 RASA or Hyperstar system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While not specifically designated as a \"high-speed\" filter, Askar has confirmed it performs well with fast optical systems. The filter's design minimizes the band-shifting effects that can occur with very fast focal ratios, ensuring you can still capture strong OIII and SII signals without significant transmission loss.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar D2 filter help me image targets like the Eagle Nebula (M16) in the Hubble Palette?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Eagle Nebula's \"Pillars of Creation\" are rich in all three narrowband gases. A standard duo-band filter captures the Hα and OIII, but misses the SII that traces the densest dust and ionization fronts. By using the Askar D2 filter, you capture that missing SII data, allowing you to assign Hα, SII, and OIII to the Red, Green, and Blue channels respectively in post-processing to create a vibrant, detailed SHO Hubble Palette image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 1.85mm thickness of the Askar D2 filter make it parfocal with other brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.85 ± 0.05mm\u003c\/strong\u003e thickness is very close to the standard used by many filter manufacturers. This means it should be nearly parfocal, requiring minimal to no refocusing when swapping between filters of a similar thickness. This is a significant advantage when conducting the two-session imaging workflow required for SHO with a color camera.\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\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDual-Band Narrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM (OIII)\u003c\/td\u003e\n\u003ctd\u003e6.5nm ± 0.5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM (SII)\u003c\/td\u003e\n\u003ctd\u003e8.5nm ± 0.5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter Wavelength (CWL)\u003c\/td\u003e\n\u003ctd\u003e500.7nm (OIII) \u0026amp; 672nm (SII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmittance\u003c\/td\u003e\n\u003ctd\u003e≥85%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Range\u003c\/td\u003e\n\u003ctd\u003e≥OD5 @ 200-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm ± 0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30\"\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":47078711591197,"sku":"ASK-ASK2DNSOD2","price":447.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-Color-Magic-D2-Filter.jpg?v=1699985639"},{"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-colour-magic-sii-oiii-c2-filter-2","title":"Askar Colour Magic SII\/OIII C2 Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual-band filter passing SⅡ (672nm) and OIII (500.7nm) emission lines\u003c\/li\u003e\n\u003cli\u003eDesigned for one-shot-color cameras to capture data often missed by Hα\/OIII filters\u003c\/li\u003e\n\u003cli\u003e15nm±3nm bandpass for the Sulfur-II (SⅡ) line\u003c\/li\u003e\n\u003cli\u003e35nm±5nm bandpass for the Oxygen-III (OIII) line\u003c\/li\u003e\n\u003cli\u003e90% peak transmittance for high signal-to-noise ratio\u003c\/li\u003e\n\u003cli\u003eOD3 blocking from 200-1000nm suppresses light pollution and unwanted signal\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 Colour Magic SII\/OIII C2 Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Askar Colour Magic C2 2\" filter isolates the Sulfur-II and Oxygen-III emission lines, capturing the \"missing\" SⅡ channel for one-shot-color camera users. With a tight 15nm±3nm bandpass at 672nm for SⅡ and a wider 35nm±5nm bandpass at 500.7nm for OIII, it achieves over 90% peak transmittance on these critical wavelengths. This design allows you to gather data for full SHO (Hubble Palette) style images without switching to a monochrome camera and 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\u003eThe \"Missing Channel\" Solution: Adding SⅡ Data to Color Images\u003c\/h3\u003e\n\u003cp\u003eMost duo-band filters for color cameras focus on Hydrogen-alpha and Oxygen-III, leaving out the crucial Sulfur-II signal that reveals unique structures in many emission nebulae. The Askar Colour Magic C2 filter is engineered specifically to fill this gap. By capturing SⅡ and OIII simultaneously, it provides the data needed to complement your existing Hα\/OIII images, unlocking the ability to create full tricolor narrowband composites with a single color camera.\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\u003eAsymmetrical Design: 15nm SⅡ and 35nm OIII Bandpasses\u003c\/h3\u003e\n\u003cp\u003eThe filter features two different bandpasses to optimize signal capture for each emission line. The tighter 15nm±3nm FWHM for the SⅡ line provides excellent contrast and aggressively rejects light pollution for this often-fainter signal. The broader 35nm±5nm FWHM for OIII allows for greater light collection on this typically stronger signal, which is beneficial for reducing exposure times while still offering a significant improvement over broadband 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\u003e90% Peak Transmittance for Maximum Contrast\u003c\/h3\u003e\n\u003cp\u003eAchieving over 90% peak transmittance at the 672nm and 500.7nm center wavelengths ensures that the maximum amount of valuable nebula light reaches your sensor. Combined with strong out-of-band blocking rated at OD3 from 200-1000nm, the C2 filter darkens the sky background significantly, even under moderately light-polluted skies. This high transmission and strong blocking work together to dramatically increase image contrast, making faint details in targets like the Trifid Nebula (M20) or the Eagle Nebula (M16) stand out clearly.\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\"\u003eWhy use the Askar C2 SⅡ\/OIII filter instead of a standard Hα\/OIII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar C2 is not a replacement for an Hα\/OIII filter; it's a \u003cstrong\u003ecomplement\u003c\/strong\u003e. Standard duo-band filters capture Hα and OIII. The C2 filter captures SⅡ and OIII, providing the third channel of data necessary for creating Hubble Palette (SHO) images with a color camera. You use both filters to acquire all three datasets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I combine data from the Askar C2 filter with my other images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAfter capturing separate images with your Hα\/OIII filter and the Askar C2 SⅡ\/OIII filter, you would use image processing software like PixInsight or Photoshop. You can split the channels from each image to isolate the Hα, SⅡ, and OIII data, and then combine them into a single color image by assigning each signal to the Red, Green, and Blue channels as desired.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 35nm bandpass on the OIII channel of the Askar C2 filter wide enough for my light-polluted skies?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 35nm bandpass provides a good balance between light pollution suppression and signal strength. While not as restrictive as a 3nm or 7nm filter, it is significantly better than a broadband filter and is effective in most suburban environments. The key benefit is shorter exposure times compared to ultra-narrowband filters, which can be an advantage for many imagers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat types of celestial objects benefit most from the Askar C2 SⅡ\/OIII filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEmission nebulae with distinct regions of Sulfur-II emission are ideal targets. Objects like the \u003cstrong\u003eEagle Nebula (M16)\u003c\/strong\u003e, the \u003cstrong\u003eTrifid Nebula (M20)\u003c\/strong\u003e, and the \u003cstrong\u003eRosette Nebula (NGC 2237)\u003c\/strong\u003e show dramatic structural differences when SⅡ data is included, allowing for the creation of vibrant and detailed Hubble Palette images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar C2 SⅡ\/OIII filter with a monochrome camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile technically possible, it's not the intended use. With a monochrome camera, the sensor would capture both SⅡ and OIII light simultaneously, and you would not be able to separate them. For monochrome imaging, it is always better to use individual SⅡ and OIII single-bandpass filters to capture clean, isolated data for each channel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are the bandpasses different for SⅡ (15nm) and OIII (35nm) on the Askar C2 filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a deliberate design choice to optimize performance. The \u003cstrong\u003eSⅡ signal is often weaker\u003c\/strong\u003e, so a tighter 15nm bandpass is used to increase contrast and reject more background light. The \u003cstrong\u003eOIII signal is typically stronger\u003c\/strong\u003e, so a wider 35nm bandpass allows more of this signal to be collected, reducing exposure times without sacrificing too much contrast.\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\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDual-Band Narrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter Wavelength (CWL)\u003c\/td\u003e\n\u003ctd\u003e500.7nm (OIII) \u0026amp; 672nm (SⅡ)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Width Half-Max (FWHM)\u003c\/td\u003e\n\u003ctd\u003eOIII: 35nm ±5nm \/ SⅡ: 15nm ±3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmittance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Range\u003c\/td\u003e\n\u003ctd\u003eOD3 (0.1%) @ 200-1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm ± 0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003e60\/40\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 Colour Magic C2 SII\/OIII Filter - 2\"\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\"\u003eProtective 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:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Drivers\/Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":47429342691613,"sku":"ASK-ASKAR2DBC2","price":167.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/image.png?v=1705009186"},{"product_id":"askar-colour-magic-sii-oiii-c1-filter-2","title":"Askar Colour Magic Ha\/OIII C1 Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual-bandpass filter for H-alpha (656.6nm) and Oxygen-III (500.7nm)\u003c\/li\u003e\n\u003cli\u003eAsymmetrical bandwidths: 15nm for H-alpha, 35nm for OIII\u003c\/li\u003e\n\u003cli\u003eGreater than 90% peak transmittance at primary emission lines\u003c\/li\u003e\n\u003cli\u003eOD3 (99.9%) blocking of light pollution from 200-1000nm\u003c\/li\u003e\n\u003cli\u003eStandard 2\" mounted format with 2mm thick substrate\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 Colour Magic Ha\/OIII C1 Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Askar Colour Magic Ha\/OIII C1 filter isolates the two most important emission lines for nebula imaging, Hydrogen-alpha at 656.6nm and Oxygen-III at 500.7nm, with over 90% peak transmittance. Its design uses asymmetrical bandwidths—a tight 15nm±3nm for H-alpha and a wider 35nm±5nm for OIII—to capture strong signal from both wavelengths with a one-shot-color camera. By implementing OD3 blocking across the 200-1000nm spectrum, the C1 filter darkens the sky background for maximum image contrast, even from light-polluted locations.\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\u003eIsolate Ha \u0026amp; OIII with 90% Peak Transmittance\u003c\/h3\u003e\n\u003cp\u003eThe Colour Magic C1 is engineered to pass only the light from ionized hydrogen (Hα at 656.6nm) and doubly ionized oxygen (OIII at 500.7nm). With a peak transmittance of over 90% at these critical wavelengths, your camera sensor collects maximum signal from emission nebulae like the North American Nebula (NGC 7000) or the Veil Nebula complex, while rejecting unwanted city lights and natural skyglow.\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\u003eAsymmetrical Bandwidths: 15nm Ha and 35nm OIII for Color Balance\u003c\/h3\u003e\n\u003cp\u003eUnlike filters with identical bandwidths, the Askar C1 uses a purpose-built asymmetrical design. The H-alpha line is restricted to a tight 15nm±3nm bandpass for high-contrast detail in hydrogen-rich regions. The OIII bandpass is set to a much wider 35nm±5nm, allowing more signal to reach the sensor. This approach helps balance the often-weaker OIII signal against the typically dominant H-alpha, producing a richer, more natural color result directly from your one-shot-color (OSC) camera with less processing effort.\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\u003eOD3 Blocking for High-Contrast Images in Light Pollution\u003c\/h3\u003e\n\u003cp\u003eEffective imaging requires not just passing the desired signal, but aggressively blocking everything else. The C1 filter provides OD3 blocking, equivalent to rejecting 99.9% of incoming light, across a vast 200-1000nm range outside of its passbands. This comprehensive blocking eliminates interference from common sources of light pollution like sodium and mercury-vapor streetlights, as well as moonlight and general skyglow, producing a dark, neutral background and making nebula structures stand out with dramatic contrast.\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 C1 vs. Symmetrical Filters: A Design for OSC Imaging\u003c\/h3\u003e\n\u003cp\u003eMany popular dual-band filters use very narrow, symmetrical bandpasses (e.g., 7nm for both Ha and OIII). While those filters offer slightly higher contrast and produce smaller stars, the Askar C1's asymmetrical design presents a distinct advantage for OSC imagers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor Advantage:\u003c\/strong\u003e Symmetrical ultra-narrowband filters provide the highest possible contrast on individual emission lines and are ideal for monochrome imaging or advanced processing techniques where data from each line is handled separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAskar C1 Advantage:\u003c\/strong\u003e By widening the OIII band to 35nm, the C1 captures more OIII signal relative to Ha in the same exposure time. This helps prevent the final color image from being overwhelmingly red and yields a more balanced initial result, reducing the need for complex color calibration in post-processing.\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\"\u003eWhy does the Askar Colour Magic C1 filter have different bandwidths for H-alpha and OIII?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe asymmetrical design is a deliberate choice to improve color balance for one-shot-color (OSC) cameras. The \u003cstrong\u003e15nm H-alpha band\u003c\/strong\u003e provides high contrast, while the wider \u003cstrong\u003e35nm OIII band\u003c\/strong\u003e allows more of the typically weaker OIII signal to be captured. This helps prevent images from being overwhelmingly red and produces a more natural color result with less processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar C1 filter perform in Bortle 8\/9 skies?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar C1 filter is highly effective in heavily light-polluted skies. Its \u003cstrong\u003eOD3 blocking\u003c\/strong\u003e across the 200-1000nm spectrum aggressively rejects common sources of urban light pollution. By only passing the specific 656.6nm and 500.7nm wavelengths of nebulae, it dramatically darkens the sky background, allowing you to capture high-contrast images of emission nebulae even from the city.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar C1 filter for imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is not the right filter for broadband targets like galaxies or star clusters. The Askar C1 is a dual-bandpass filter that blocks almost all light except for specific emission lines. Since galaxies like M31 shine primarily in continuous-spectrum starlight, this filter would block the vast majority of their light, resulting in a very faint and incomplete image. A broadband light pollution filter is a better choice for galaxies from the city.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of color balance can I expect from the Askar C1 filter on the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn a target like the Orion Nebula (M42), which is rich in both hydrogen and oxygen, the Askar C1 filter is designed to deliver a well-balanced color image with an OSC camera. The tight 15nm band will capture fine details in the red H-alpha regions, while the broad 35nm OIII band will ensure the blue-green structures in the Trapezium core are bright and prominent, avoiding an overly red final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar C1 filter suitable for monochrome cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it can be used, it's not ideal. A monochrome camera cannot separate the H-alpha and OIII signals captured simultaneously by the Askar C1 filter. For monochrome imaging, it is far more effective to use separate, dedicated H-alpha and OIII single-bandpass filters to capture data for each channel individually, allowing for full processing control and palette creation (like the Hubble Palette).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the OD3 @ 200-1000nm rating on the Askar C1 filter mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eOD3\u003c\/strong\u003e stands for Optical Density 3, which means the filter blocks 99.9% of light outside its designated passbands. The \u003cstrong\u003e@ 200-1000nm\u003c\/strong\u003e specification indicates this high level of blocking is applied across the entire spectrum from deep ultraviolet to near-infrared. This ensures a very dark, high-contrast background free from light pollution and other unwanted signals.\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\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDual-Bandpass Narrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength 1 (CWL)\u003c\/td\u003e\n\u003ctd\u003e656.6nm (H-alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength 2 (CWL)\u003c\/td\u003e\n\u003ctd\u003e500.7nm (OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth (FWHM) H-alpha\u003c\/td\u003e\n\u003ctd\u003e15nm ± 3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth (FWHM) OIII\u003c\/td\u003e\n\u003ctd\u003e35nm ± 5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmittance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Efficiency\u003c\/td\u003e\n\u003ctd\u003eOD3 (99.9%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Range\u003c\/td\u003e\n\u003ctd\u003e200nm - 1000nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm ± 0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003e60\/40\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 Colour Magic Ha\/OIII C1 Filter - 2\"\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\"\u003eProtective 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:\/\/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":47429347672349,"sku":"ASK-ASKAR2DBC1","price":167.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/image_8378cc30-ba51-4d4c-bfe1-c9fbd4710ebc.png?v=1705009394"},{"product_id":"askar-0-8x-reducer-for-140apo","title":"Askar 0.8x Reducer for 140APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces 140APO Focal Ratio to f\/5.6\u003c\/li\u003e\n\u003cli\u003eShortens 140APO Focal Length to 784mm\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus Requirement\u003c\/li\u003e\n\u003cli\u003eTriplet Optical Design with Field Flattening\u003c\/li\u003e\n\u003cli\u003eIntegrated M48 (2-inch) Filter Thread\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 0.8x Reducer for 140APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar 0.8x Reducer for 140APO converts the telescope into a faster f\/5.6 imaging system with a 784mm focal length. This triplet reducer is engineered to maintain a standard 55mm back focus from its M48 male thread, simplifying camera connections. The 0.63kg assembly includes both M54×0.75 and M48×0.75 rear threads, with an integrated M48 filter thread inside for direct filter installation.\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\u003eTransforming the 140APO to an f\/5.6 Astrograph\u003c\/h3\u003e\n\u003cp\u003eBy reducing the native focal ratio of the Askar 140APO to f\/5.6, this corrector significantly cuts required exposure times, allowing you to gather more signal in less time. The triplet optical design simultaneously flattens the field for sharp stars across a full-frame sensor, while the shorter 784mm focal length provides a wider field of view for framing large targets like the Andromeda Galaxy (M31) or the North America Nebula (NGC 7000).\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 Back Focus and Flexible Connectivity\u003c\/h3\u003e\n\u003cp\u003eIntegrating the reducer into your imaging train is straightforward, thanks to the industry-standard 55mm back focus measured from the base of the M48 male thread. The reducer provides both M54×0.75 and M48×0.75 output threads for direct connection to a range of cameras and filter wheels. For added convenience, an internal M48×0.75 filter thread allows you to install 2-inch filters directly into the reducer itself, minimizing the components in your optical path.\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 0.8x Reducer change my field of view on the 140APO when imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer shortens the 140APO's focal length to \u003cstrong\u003e784mm\u003c\/strong\u003e, widening your field of view significantly. This allows you to capture the entire Orion Nebula complex, from the Trapezium Cluster to the fainter outer loops, in a single frame with a full-frame camera, which is difficult at the native focal length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use an APS-C camera with my Askar 140APO. Is this reducer still a good choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While designed to illuminate a full-frame sensor, the 0.8x Reducer provides excellent field flattening for smaller APS-C sensors. The main benefit is the speed increase to \u003cstrong\u003ef\/5.6\u003c\/strong\u003e, which reduces your sub-exposure times regardless of sensor size, helping to improve your signal-to-noise ratio on faint targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the back focus for the Askar 140APO 0.8x Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe required back focus is a standard \u003cstrong\u003e55mm\u003c\/strong\u003e, measured from the base of the male M48x0.75 thread to your camera's sensor. This is compatible with most DSLR\/mirrorless cameras using a standard T-ring and many dedicated astronomy cameras with their included spacers.\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 0.8x Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the reducer has a built-in \u003cstrong\u003eM48x0.75 filter thread\u003c\/strong\u003e on the camera side. This allows you to screw a standard 2-inch filter directly into the reducer housing, placing it securely within the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this reducer attach to the Askar 140APO telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer is designed to thread directly onto the focuser of the Askar 140APO for a secure, tilt-free connection, ensuring perfect optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical design of the Askar 140APO 0.8x Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer uses a \u003cstrong\u003etriplet (3-element)\u003c\/strong\u003e air-spaced optical design. This configuration allows it to both reduce the focal length and correct for field curvature, providing sharp stars across the entire image field.\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\u003eReduced Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Length\u003c\/td\u003e\n\u003ctd\u003e784mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTriplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from base of M48 male thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Threads\u003c\/td\u003e\n\u003ctd\u003eM54×0.75 \u0026amp; M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Filter Threads\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (2-inch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.63 kg\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 0.8x Reducer for 140APO\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\"\u003eFront Dust Cap\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\"\u003eRear Dust Cap\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_0.8x_Reducer_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":47636055032093,"sku":"ASK-ASKAR140R","price":461.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/7aa725af-9cf7-4e43-9110-3003e039fd08_1ac241f4-f6d7-4ae3-b7b3-93ea3908ef1e.jpg?v=1722021035"},{"product_id":"askar-1x-field-flattener-for-140apo","title":"Askar 1x Field Flattener for 140APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEngineered for the Askar 140APO Triplet Refractor\u003c\/li\u003e\n\u003cli\u003e1x Flattener Preserves Native f\/7 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eCorrects a 44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus Requirement\u003c\/li\u003e\n\u003cli\u003eTriplet Optical Design for Sharp, Coma-Free Stars\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 1x Field Flattener for 140APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar 1x Field Flattener is engineered specifically for the Askar 140APO refractor, maintaining the native 980mm focal length and f\/7 focal ratio of the telescope. Its triplet optical design corrects for field curvature across a 44mm full-frame image circle and establishes a standard 55mm back focus for seamless integration with your existing imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTriplet Optics for a 44mm Corrected Image Circle\u003c\/h3\u003e\n\u003cp\u003eRefractor optics naturally produce a curved focal plane, resulting in elongated stars at the corners of an image. This 1x flattener uses a three-element, air-spaced triplet lens system to counteract this effect, ensuring pinpoint stars across the entire field of a full-frame sensor. By supporting a 44mm image circle, you can leverage large-format CMOS and CCD cameras without significant vignetting or distortion at the edges.\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 Back Focus and Flexible Camera Connections\u003c\/h3\u003e\n\u003cp\u003eDesigned for straightforward integration, this flattener requires a standard 55mm back focus from the base of its M48 male thread. This spacing is compatible with most ZWO, QHY, and other dedicated astronomy cameras when used with their stock adapters, as well as with standard DSLR\/mirrorless T-rings. The 0.79kg unit provides multiple camera-side connections, including M68×1, M54×0.75, and M48×0.75 threads, and features internal M48 threads for mounting 2-inch filters within the optical path.\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 purpose of the Askar 1x Field Flattener for the 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary purpose is to correct the natural field curvature of the Askar 140APO refractor. This correction ensures that stars are sharp and round not just in the center of your image, but all the way to the corners, which is essential for astrophotography with modern large-format sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Askar flattener change the focal length of my 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This is a \u003cstrong\u003e1x flattener\u003c\/strong\u003e, meaning it does not reduce or extend the focal length. When attached to the Askar 140APO, the telescope's focal length remains 980mm and the focal ratio stays at f\/7.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 1x flattener improve images of the Andromeda Galaxy (M31) with the 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large target like the Andromeda Galaxy (M31) will fill the frame of a full-frame sensor on the 140APO. Without the flattener, stars in the outer arms and surrounding the galaxy would appear stretched. With the flattener's 44mm corrected circle, the entire galaxy and its surrounding starfield will be rendered with sharp, pinpoint stars from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the correct 55mm back focus with the Askar 1x Flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 55mm distance is measured from the base of the flattener's M48 male thread to your camera's sensor. Most dedicated astronomy cameras and DSLR\/mirrorless cameras with a T-ring are designed to meet this 55mm standard using a combination of included extension rings. You must ensure your total imaging train (off-axis guider, filter wheel, etc.) adds up to exactly 55mm for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" filters with the Askar 140APO flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The flattener has a built-in M48×0.75 filter thread on the telescope side of the camera adapters. This allows you to directly screw in any standard 2-inch astronomy filter for light pollution reduction or narrowband imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar 1x flattener work on telescopes other than the 140APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this flattener is optically matched specifically for the Askar 140APO triplet refractor. Using it with other telescopes will likely result in poor field correction and degraded image quality. For other telescopes, you should use the flattener designed for that specific optical system.\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\u003e3-Element Triplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e1x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd\u003eAskar 140APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (with 140APO)\u003c\/td\u003e\n\u003ctd\u003e980mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio (with 140APO)\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrected Image Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm (from base of M48 male thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connections\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\u003eInternal M48×0.75 (for 2\" filters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.79kg\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_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":47636067615005,"sku":"ASK-ASKAR140FL","price":461.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/4930810f-9de1-46ee-a4ba-28f63ecc8ddd.png?v=1722023524"},{"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-color-magic-ha-oiii-sii-oiii-c1-c2-filter-package","title":"Askar Colour Magic Ha\/OIII \u0026 SII\/OIII (C1+C2) Filter Package","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eComplete 2-Filter Narrowband Solution for Color Cameras\u003c\/li\u003e\n\u003cli\u003eCaptures H-alpha, Oxygen-III, and Sulfur-II Wavelengths\u003c\/li\u003e\n\u003cli\u003eFilter 1 (C1): Hα + OIII Duo-Band\u003c\/li\u003e\n\u003cli\u003eFilter 2 (C2): SII + OIII Duo-Band\u003c\/li\u003e\n\u003cli\u003eEnables Hubble Palette (SHO) Imaging with One-Shot-Color Cameras\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 Colour Magic Ha\/OIII \u0026amp; SII\/OIII (C1+C2) Filter Package\u003c\/h2\u003e\n\u003cp\u003eThe Askar Colour Magic C1+C2 Filter Package is a unique 2-filter system that enables imagers using one-shot-color cameras to capture all three key emission nebula wavelengths—H-alpha, Oxygen-III, and Sulfur-II. This package combines the C1 (Hα+OIII) and C2 (SII+OIII) duo-band filters, providing a direct and efficient path to creating full Hubble palette-style images, even from heavily light-polluted locations.\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 2-Filter Solution for Color Camera Narrowband Imaging\u003c\/h3\u003e\n\u003cp\u003eThis filter set fundamentally simplifies the process of tri-band narrowband imaging. Instead of requiring a monochrome camera, a filter wheel, and three separate filters (Ha, SII, OIII), the Colour Magic package allows you to achieve a similar result with your existing color camera and just two filters, drastically reducing complexity and cost.\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 C1 (Hα+OIII) Filter: Your Primary Nebula Workhorse\u003c\/h3\u003e\n\u003cp\u003eThe first filter in the set, the C1, is a duo-band filter that isolates the two most prominent wavelengths in most emission and planetary nebulae: Hydrogen-alpha and Oxygen-III. For many targets, this filter alone will produce dramatic, high-contrast images by rejecting broadband light pollution from city skies, revealing faint nebulosity that would otherwise be lost.\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 C2 (SII+OIII) Filter: Adding Critical Sulfur-II Data\u003c\/h3\u003e\n\u003cp\u003eThe C2 filter is the key to creating full SHO images. It captures the Sulfur-II line, which provides the rich reds and oranges in the Hubble palette, while also capturing more Oxygen-III signal. By capturing OIII data with both filters, you increase the total signal-to-noise ratio on this often-faint wavelength and create a common data layer that simplifies image registration and processing.\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\u003eColour Magic vs. Mono Imaging: A Streamlined Path to SHO\u003c\/h3\u003e\n\u003cp\u003eA traditional monochrome setup offers maximum control over data acquisition. You can use ultra-narrow filters and precisely control exposure time for each channel, which remains the standard for advanced scientific imaging.\u003c\/p\u003e\n\u003cp\u003eThe Askar Colour Magic system's advantage is workflow efficiency. It makes SHO imaging accessible to anyone with a color astronomy camera, eliminating the need for a filter wheel and the complexities of managing three separate data sets. While data from a duo-band filter is not as pure as from a dedicated mono filter, this package provides an innovative and highly effective way to produce stunning, colorful nebula portraits with far less equipment and acquisition time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the Askar Colour Magic filters to create an SHO image?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou capture two sets of exposures, one with the \u003cstrong\u003eC1 (Hα+OIII) filter\u003c\/strong\u003e and another with the \u003cstrong\u003eC2 (SII+OIII) filter\u003c\/strong\u003e. In post-processing, you will split the color channels from both data sets. The Red channel from the C1 data becomes your H-alpha, the Red channel from the C2 data becomes your Sulfur-II, and the combined Green\/Blue channels from both sets become your Oxygen-III. These three new monochrome images can then be assigned to the R, G, and B channels to create a Hubble palette image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Askar C2 filter include OIII data along with SII?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCapturing Oxygen-III data with both filters serves two purposes. First, it increases the total integration time and signal-to-noise ratio on the OIII signal, which is often the weakest of the three. Second, it provides a common structural element (the OIII nebulosity) in both of your master images, which makes aligning and registering the Hα and SII data much easier during processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use just the Askar C1 (Hα+OIII) filter by itself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The C1 filter is an excellent standalone duo-band filter for imaging most emission nebulae like the Orion Nebula (M42) or Lagoon Nebula (M8). It will produce high-contrast color images with natural-looking red and blue-green hues directly from your color camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar Colour Magic filters work with my 8\" f\/10 SCT on the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this filter set is well-suited for an f\/10 SCT. For the Orion Nebula (M42), you could use just the C1 (Hα+OIII) filter to capture its extensive hydrogen and oxygen structures with excellent contrast. Since M42 has very little Sulfur-II signal, using the C2 filter is not typically necessary for this specific target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this Askar filter set perform under my Bortle 7 city skies on the Pelican Nebula (IC 5070)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is an ideal scenario for the Colour Magic filters. From Bortle 7 skies, these filters will aggressively reject broadband light pollution, allowing your color camera to capture clean narrowband data. The Pelican Nebula (IC 5070) is rich in all three wavelengths (Ha, OIII, and SII), making it a perfect target to use both the C1 and C2 filters to create a detailed SHO Hubble palette image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo these Askar filters replace the need for a monochrome camera for narrowband?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor many amateur astrophotographers, yes. They provide a much simpler and more affordable way to get into tri-band narrowband imaging without investing in a full monochrome setup. While a mono camera offers more control and can use narrower bandpass filters for the absolute highest contrast, this Askar set closes the gap significantly and makes SHO imaging accessible to a much wider audience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software \u0026amp; Drivers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/askar-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eAskar 1-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":48554702995741,"sku":"ASK-CM-C1C2","price":315.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-Color-Magic-Filter-Pack.png?v=1717083872"},{"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-52mm-f4-guide-scope","title":"Askar 52mm F4 Guide Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAperture: 52mm\u003c\/li\u003e\n\u003cli\u003eFocal Length: 208mm\u003c\/li\u003e\n\u003cli\u003eFocal Ratio: f\/4\u003c\/li\u003e\n\u003cli\u003eFocuser: Helical with 25mm travel\u003c\/li\u003e\n\u003cli\u003eWeight: 631g\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\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 52mm F4 Guide Scope\u003c\/h2\u003e\n      \u003cp\u003eThe Askar 52mm F4 Guide Scope combines a 52mm aperture with a fast 208mm focal length, delivering a bright image field essential for reliable multi-star guiding. Its optical design includes one element of Extra-Low Dispersion (ED) glass for sharp, high-contrast guide stars, and the entire assembly weighs just 631g.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003e52mm f\/4 ED Optics for Precision Guiding\u003c\/h3\u003e\n      \u003cp\u003eWith a 52mm objective, this guidescope gathers significantly more light than standard 30mm finders, revealing fainter stars even in sparse regions of the sky. The fast f\/4 focal ratio allows your guide camera to use shorter exposures, enabling more rapid and responsive corrections to tracking errors from your mount.\u003c\/p\u003e\n      \u003cp\u003eThe inclusion of an ED glass element minimizes chromatic aberration, ensuring guide stars are rendered as tight, focused points of light. This improves the accuracy of centroid calculations in your guiding software, allowing for the sub-pixel precision required for imaging with long focal length instruments.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003e25mm Helical Focuser with M42 \u0026amp; 1.25\" Outputs\u003c\/h3\u003e\n      \u003cp\u003eAchieving and maintaining sharp focus is critical for autoguiding. The Askar 52mm scope features a precision helical focuser with 25mm of travel, providing smooth, exact adjustments without image shift or rotation. This range is sufficient to bring a wide variety of guide cameras to a sharp focus.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eM42 Male Thread:\u003c\/strong\u003e Provides a direct, rigid connection for cameras equipped with a corresponding female M42x0.75 thread, eliminating any potential for flexure.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003e1.25\" Adapter:\u003c\/strong\u003e Ensures universal compatibility with the vast majority of standard astronomy guide cameras that use a 1.25\" nosepiece.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat guide cameras are compatible with the Askar 52mm F4 Guide Scope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Askar 52mm F4 Guide Scope is highly compatible, offering two connection methods. You can use any guide camera with a standard \u003cstrong\u003e1.25\" nosepiece\u003c\/strong\u003e via the included adapter, or you can directly thread on any camera that has female \u003cstrong\u003eM42x0.75 T-threads\u003c\/strong\u003e for a more secure connection.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is ED glass important in a guidescope like the Askar 52mm?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eExtra-Low Dispersion (ED) glass\u003c\/strong\u003e corrects for chromatic aberration, or color fringing. In a guidescope, this means stars appear as tighter, more focused points without blue or purple halos. Guiding software can calculate the center of a sharp star more accurately, leading to more precise tracking corrections.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar 52mm F4 Guide Scope perform when guiding a 10\" SCT on a faint target?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003e52mm aperture\u003c\/strong\u003e is a significant advantage in this scenario. Compared to smaller 30mm guidescopes, it gathers much more light, allowing you to find suitable guide stars even when pointed at faint objects far from the galactic plane. The f\/4 speed also allows for short, sensitive exposures, which is crucial for making the rapid corrections needed to guide a long focal length telescope like an SCT.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of a helical focuser on the Askar 52mm Guide Scope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA helical focuser provides very fine, precise focus control by twisting the barrel. Unlike a simple sliding tube, it allows for minute adjustments that are repeatable and hold their position securely once set. This ensures your guide stars remain perfectly sharp throughout an imaging session.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar 52mm F4 as a wide-field finder scope with a 1.25\" eyepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, absolutely. With its 208mm focal length and the included 1.25\" adapter, the Askar 52mm F4 doubles as an excellent, high-quality optical finder. Paired with a low-power 1.25\" eyepiece, it will provide bright, wide-field views to help you locate and center objects in your main telescope.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow much does the Askar 52mm Guide Scope weigh and will it affect my mount's balance?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe scope weighs \u003cstrong\u003e631g\u003c\/strong\u003e. While heavier than entry-level 30mm guidescopes, this weight is manageable for most equatorial mounts capable of astrophotography. It's a necessary trade-off for the superior light-gathering of the 52mm aperture. Always ensure your system is properly balanced after adding any new equipment.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e52mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e208mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e1x ED Glass Element\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser Type\u003c\/td\u003e\n\u003ctd\u003eHelical Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOutput Connections\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 Male Thread, 1.25\" Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e631g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Colors\u003c\/td\u003e\n\u003ctd\u003eBlack, Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\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_52mm_F4_Guide_Scope_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\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":"Black","offer_id":49024014975261,"sku":"ASK-ASKAR52GS-BK","price":276.0,"currency_code":"CAD","in_stock":true},{"title":"Silver","offer_id":49024014942493,"sku":"ASK-ASKAR52GS-SV","price":276.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-52mm-f4-Guide-scope-1.jpg?v=1723301881"},{"product_id":"askar-sqa55-autofocus-kit","title":"Askar SQA55 Autofocus Kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned specifically for the Askar SQA55 Astrograph\u003c\/li\u003e\n\u003cli\u003eEnables autofocus with nearly all brands of electronic focusers\u003c\/li\u003e\n\u003cli\u003eIncludes 4 MXL belts and 2 pulleys for broad compatibility\u003c\/li\u003e\n\u003cli\u003eTensioner pulley system eliminates backlash for precise focusing\u003c\/li\u003e\n\u003cli\u003eCompact design preserves space for cameras and accessories\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 Autofocus Kit\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA55 Autofocus Kit is an engineered hardware solution for adding precise, automated focusing to your SQA55 astrograph. This comprehensive kit includes 4 different MXL synchronous belts, 2 MXL pulleys, and 2 L-shaped hollow adapter plates to ensure compatibility with virtually any electronic focuser. With all necessary M3 and M4 screws included, you can achieve a rigid, backlash-free connection for repeatable, accurate focusing across every imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Tensioner Pulley System for 0-Backlash Focusing\u003c\/h3\u003e\n\u003cp\u003eStandard belt-drive systems for electronic focusers often suffer from unavoidable belt slack, which introduces backlash and compromises focusing accuracy. The Askar SQA55 AF Kit solves this directly with an integrated tensioner pulley, allowing you to adjust the synchronous belt to a perfectly tight state. This eliminates slippage and ensures that every step of the focuser motor translates into precise, repeatable focus adjustments.\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\u003eUniversal Fit: 4 Belts and 2 Pulleys for Any EAF\u003c\/h3\u003e\n\u003cp\u003eUnlike single-brand solutions, the SQA55 AF Kit is designed for near-universal compatibility. The inclusion of 4 different length MXL synchronous belts and 2 different pulleys ensures you have the right components to match the hardware of almost any electronic focuser on the market. This flexibility means you are not locked into a single ecosystem and can easily upgrade or change your focuser brand in the future without needing a new mounting kit.\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\u003eFlexible M4 Mounting for Any Imaging Train\u003c\/h3\u003e\n\u003cp\u003eMany stock adapter plates for electronic focusers are excessively long, creating mechanical interference with cameras, filter wheels, or rotators. The SQA55 AF Kit features a compact adapter bracket and 2 versatile L-shaped hollow plates secured by M4 screws. This modular design can be disassembled and reconfigured in multiple positions on the SQA55 lens tube, reserving critical space for your imaging train and preventing collisions.\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 advantage of the Askar SQA55 Autofocus Kit over a standard EAF adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar SQA55 AF Kit offers three key advantages. First, its \u003cstrong\u003etensioner pulley\u003c\/strong\u003e eliminates belt backlash for higher focusing accuracy. Second, its \u003cstrong\u003ecompact adapter plates\u003c\/strong\u003e are specifically designed to avoid interference with cameras and other accessories. Finally, its modular design allows the entire assembly to be installed in different positions on the SQA55, freeing up space where you need it most.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is focusing backlash and how does the Askar SQA55 AF Kit prevent it?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eBacklash\u003c\/strong\u003e is a slight lag or \"slop\" in a mechanical system, often caused by a loose drive belt. In focusing, it means the focuser doesn't move immediately or precisely when the motor turns, leading to inaccurate results. The SQA55 AF Kit prevents this by using a dedicated tensioner pulley that keeps the belt tight, ensuring there is no slack and every motor movement translates directly into focuser travel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar SQA55 Autofocus Kit with a Pegasus Astro Cube or other large EAF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The kit is designed for broad compatibility with focusers that may have non-standard hole spacing. The L-shaped adapter plates have a hollow design. To adjust for a wider focuser body, you can loosen the M4x12mm fixing screws, flip the plates, adjust the spacing to the correct position, and retighten the screws to lock them in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use a full-frame camera and filter wheel on my Askar SQA55. Will this kit get in the way?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis kit is specifically designed to prevent this problem. Unlike many oversized stock mounting plates, the Askar SQA55 AF Kit is compact. Furthermore, you can mount the entire focuser assembly in different positions around the SQA55's focuser body to ensure it does not interfere with your specific imaging train configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Askar SQA55 Autofocus Kit include 4 different MXL belts?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDifferent brands and models of electronic focusers use different sized drive pulleys and have varying mounting dimensions. Including \u003cstrong\u003e4 belts of different lengths\u003c\/strong\u003e ensures that you will have the correct size to achieve a perfect fit with your specific electronic focuser, eliminating the need to source a custom belt separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to buy extra hardware to attach a ZWO EAF to my SQA55 with this kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the kit is all-inclusive. It provides a complete set of mounting hardware, including \u003cstrong\u003e2 M4×10mm screws, 2 M3×10mm screws, and 2 M4×12mm screws\u003c\/strong\u003e, along with 3 Allen wrenches. This covers the hardware needed for most popular electronic focusers, including the ZWO EAF.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAskar SQA55 Astrograph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Compatibility\u003c\/td\u003e\n\u003ctd\u003eCompatible with most electronic focuser brands\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\"\u003eMXL Synchronous Belts\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\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\"\u003eMXL Synchronous Pulleys\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\"\u003eAdapter Bracket\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\"\u003eL-Shaped Hollow Plates\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\"\u003eAllen Wrenches\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\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\"\u003eM4×10mm Screws\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\"\u003eM3×10mm Screws\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\"\u003eM4×12mm Screws\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\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":49058191704349,"sku":"ASK-SQA55AFKIT","price":122.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA55-AF-Kit-1.jpg?v=1724095103"},{"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-0-75x-71f-reducer","title":"Askar 0.75x 71F Reducer","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e0.75x Reduction Factor\u003c\/li\u003e\n\u003cli\u003eTransforms Askar 71F to f\/5.2\u003c\/li\u003e\n\u003cli\u003eNew Focal Length: 369mm\u003c\/li\u003e\n\u003cli\u003eStandard 55mm Back Focus\u003c\/li\u003e\n\u003cli\u003eTriplet Optical Design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\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 0.75x 71F Reducer\u003c\/h2\u003e\n\u003cp\u003eThe Askar 0.75x 71F Reducer transforms the Askar 71F refractor into a faster f\/5.2 imaging system with a new focal length of 369mm. This triplet reducer provides a standard 55mm back focus for easy camera integration and weighs just 0.23kg.\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 Faster Askar 71F: The 0.75x Reduction to f\/5.2\u003c\/h3\u003e\n\u003cp\u003eBy reducing the native focal ratio of the Askar 71F to f\/5.2, this corrector significantly shortens required exposure times, allowing you to gather more signal on faint targets in a single session. The resulting 369mm focal length creates a wider field of view, ideal for framing large emission nebulae like the North American Nebula (NGC 7000) or sprawling star clusters. Its triplet optical design is engineered specifically to maintain image sharpness across the field.\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 Correction with 55mm Standard Back Focus\u003c\/h3\u003e\n\u003cp\u003eThis reducer is also a dedicated field flattener, designed to produce sharp stars out to the corners of full-frame sensors. Imaging integration is straightforward thanks to a standard 55mm back focus, measured from the base of its M48 male thread, simplifying connection to your DSLR or dedicated astronomy camera. The design also incorporates threads for standard 2-inch filters, allowing you to use light pollution or narrowband filters without adding extra spacing to your imaging train.\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 benefit of using the Askar 0.75x Reducer with my 71F telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is speed. It reduces the focal ratio to f\/5.2, which cuts your exposure times significantly compared to the native f\/7 ratio. This allows you to collect more data on faint objects in less time.\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 71F 0.75x Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer provides a standard \u003cstrong\u003e55mm back focus\u003c\/strong\u003e from the base of its M48 male thread. You will need to use a combination of M48 spacers and adapters to place your camera's sensor at exactly this distance to achieve a flat field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Askar 0.75x reducer suitable for imaging the Andromeda Galaxy (M31) with a full-frame camera on the 71F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reduced focal length of \u003cstrong\u003e369mm\u003c\/strong\u003e provides a wide field of view that is excellent for large targets like the Andromeda Galaxy (M31) or the Heart and Soul Nebulae. The reducer is designed to flatten the field for full-frame sensors, ensuring sharp stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar 0.75x 71F Reducer also work as a field flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is a reducer-flattener. Its \u003cstrong\u003etriplet optical design\u003c\/strong\u003e corrects for field curvature, ensuring that stars are sharp from the center to the edges of the image, which is critical for astrophotography.\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 0.75x Reducer on my 71F?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The reducer's connection system is designed to accommodate standard 2-inch (M48x0.75) filters. You can thread them directly into the imaging train, making it easy to use narrowband or light pollution filters for targets like the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the image circle of the Askar 0.75x 71F Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer is designed as a full-frame corrector. It effectively illuminates and flattens the field for camera sensors up to a 35mm format (43mm diagonal), making it compatible with a wide range of DSLRs and dedicated astronomy cameras.\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\u003eReduction Factor\u003c\/td\u003e\n\u003ctd\u003e0.75x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Length (with 71F)\u003c\/td\u003e\n\u003ctd\u003e369mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Ratio (with 71F)\u003c\/td\u003e\n\u003ctd\u003ef\/5.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTriplet\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\u003eRear Thread\u003c\/td\u003e\n\u003ctd\u003eM59*1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23kg\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 0.75x 71F Reducer\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":49200895263005,"sku":"ASK-ASKAR71R","price":291.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-Reducer-71F-1.jpg?v=1727375509"},{"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-6nm-colour-magic-super-ha-oiii-d1-filter","title":"Askar 6nm Colour Magic Super Ha\/OIII D1 Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual-Bandpass: 8.5nm H-alpha \u0026amp; 6.5nm OIII\u003c\/li\u003e\n\u003cli\u003ePeak Transmittance: \u0026gt;85% at 500.7nm and 656.6nm\u003c\/li\u003e\n\u003cli\u003eLight Pollution Suppression: ≥OD5 blocking from 200-1100nm\u003c\/li\u003e\n\u003cli\u003eOptical Integrity: 30\" Parallelism\u003c\/li\u003e\n\u003cli\u003eThickness: 1.85mm\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 6nm Colour Magic Super Ha\/OIII D1 Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Askar Colour Magic Super D1 duo-narrowband filter isolates the two most important emission lines for nebula photography, with a 6.5nm bandpass for Oxygen III and an 8.5nm bandpass for Hydrogen-alpha. It delivers over 85% peak transmittance at its central wavelengths of 500.7nm and 656.6nm, ensuring strong signal capture from emission targets. With aggressive out-of-band blocking rated at ≥OD5 from 200-1100nm and a substrate parallelism of 30 arcseconds, this filter dramatically increases contrast and maintains sharp star profiles even in heavily light-polluted skies.\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\u003eCapturing Ha and OIII with 85% Transmittance\u003c\/h3\u003e\n\u003cp\u003eThis filter is engineered to capture H-alpha and OIII data simultaneously, making it an ideal tool for one-shot color cameras. The 8.5nm bandpass for H-alpha and 6.5nm for OIII are tight enough to reject urban skyglow but wide enough to collect significant signal. With a peak transmittance of 85%, you can acquire deep, high-contrast images of emission nebulae like the Veil Nebula (NGC 6960) or the Rosette Nebula (NGC 2237) without excessively long 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\u003eOD5 Blocking and 30\" Parallelism for Sharp Stars\u003c\/h3\u003e\n\u003cp\u003eThe optical quality of the Super D1 filter is defined by its rigorous specifications for blocking and physical precision. Its ≥OD5 blocking across the 200-1100nm spectrum effectively eliminates interference from sodium vapor lamps, LED streetlights, and natural skyglow, rendering the background sky nearly black. A 30\" parallelism tolerance ensures the filter surfaces are flat and parallel, preventing internal reflections and star distortions that can compromise the resolution of your main 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\u003eHigh Signal Capture Down to f\/1.9\u003c\/h3\u003e\n\u003cp\u003eWhile not designated specifically as a high-speed filter, the Askar Super D1 has been tested to perform exceptionally well with fast optical systems. Its design minimizes the band-shifting effects that can cause signal loss when narrowband filters are used with fast focal ratios. This makes it a reliable choice for modern astrographs, refractors, and even ultra-fast systems like a Celestron RASA or a telescope equipped with a Starizona HyperStar, maintaining high contrast and signal down to f\/1.9.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the Askar D1 Duo-Narrowband filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar D1 filter is designed for astrophotographers using \u003cstrong\u003eone-shot color (OSC) cameras\u003c\/strong\u003e in light-polluted areas. It allows you to capture two key nebula emission lines, H-alpha and OIII, in a single exposure, which dramatically increases image contrast and reveals details that would otherwise be lost to skyglow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are the H-alpha (8.5nm) and OIII (6.5nm) bandpasses on the Askar D1 different?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a deliberate design choice to balance signal strength with contrast. The tighter \u003cstrong\u003e6.5nm OIII bandpass\u003c\/strong\u003e provides excellent rejection of light pollution around that wavelength. The slightly wider \u003cstrong\u003e8.5nm H-alpha bandpass\u003c\/strong\u003e allows for slightly more signal collection, which can be beneficial for capturing fainter hydrogen structures in deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Askar D1 filter perform on the Orion Nebula (M42) with an f\/6 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt will perform exceptionally well. The Orion Nebula is extremely rich in both H-alpha and OIII emissions. The Askar D1 will isolate these signals, enhancing the red nebulosity and bringing out the blue-green structures in the core, all while suppressing skyglow. This allows for greater control over the bright Trapezium region while capturing the faint outer loops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Askar D1 filter with a monochrome camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can, it's not the ideal application. A monochrome camera would capture both H-alpha and OIII signals on the same frame, preventing you from processing them separately. For monochrome imaging, using individual H-alpha and OIII filters provides far more flexibility and control over the final color image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar D1 suitable for my fast f\/2 RASA telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The filter's optical design has been tested to minimize band-shift and maintain high transmittance on systems as fast as \u003cstrong\u003ef\/1.9\u003c\/strong\u003e. This makes it a very capable choice for fast astrographs like the RASA, allowing you to take full advantage of the instrument's light-gathering power without significant signal degradation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Askar D1 filter control halos around bright stars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHalos are minimized through a combination of factors. The \u003cstrong\u003e≥OD5 blocking\u003c\/strong\u003e and anti-reflection coatings reduce stray light, while the \u003cstrong\u003e30\" parallelism\u003c\/strong\u003e specification ensures that light passes through without creating internal reflections that can cause halos and other artifacts 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\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003e8.5nm ± 0.5nm (H-alpha) \/ 6.5nm ± 0.5nm (OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCenter Wavelength (CWL)\u003c\/td\u003e\n\u003ctd\u003e656.6nm (H-alpha) \u0026amp; 500.7nm (OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmittance\u003c\/td\u003e\n\u003ctd\u003e85%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking\u003c\/td\u003e\n\u003ctd\u003e≥OD5 @ 200-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd\u003e1.85 ± 0.05mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30\"\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 6nm Colour Magic Super Ha\/OIII D1 Filter - 2\"\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\"\u003ePlastic Protective 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:\/\/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 \u0026amp; 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":49387561124125,"sku":"ASK-ASK2DNHOD1","price":447.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-Color-Magic-D2-Filter.jpg?v=1699985639"},{"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-sqa55-quick-release-handle-bar","title":"Askar SQA55 Quick-Release Handle Bar","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned specifically for the Askar SQA55 Astrograph\u003c\/li\u003e\n\u003cli\u003eTool-free quick-release installation and removal\u003c\/li\u003e\n\u003cli\u003eIntegrated multi-functional finder base slot\u003c\/li\u003e\n\u003cli\u003eDurable all-metal construction\u003c\/li\u003e\n\u003cli\u003eProvides a secure carrying point and accessory mount\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 Quick-Release Handle Bar\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA55 Quick-Release Handle Bar is a dedicated accessory engineered to enhance the handling and accessory mounting capabilities of the SQA55 astrograph. Constructed entirely from metal, this handle integrates seamlessly with the four quick-release bases on the SQA55 optical tube, providing a secure grip and a versatile mounting platform for finders, guide scopes, and other aim-and-shoot devices.\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\u003eTool-Free Quick-Release Mechanism for the SQA55\u003c\/h3\u003e\n\u003cp\u003eThis handle bar is built around a quick-release design, allowing for completely tool-free installation and removal. It securely locks into the existing quick-release bases on the SQA55 tube, creating a rigid and reliable connection. This makes it easy to configure your imaging rig in the field or strip it down for transport without searching for extra tools in the dark.\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\u003eIntegrated Multi-Functional Finder Base\u003c\/h3\u003e\n\u003cp\u003eThe top of the handle features a built-in, multi-functional finder base slot. This eliminates the need to add a separate finder shoe to your telescope rings, providing a clean, centralized mounting point. It is compatible with a wide range of standard finder scope brackets and other astronomical accessories, allowing you to attach your preferred pointing or guiding equipment effortlessly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Askar SQA55 Quick-Release Handle Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of the \u003cstrong\u003eAskar SQA55 Handle Bar\u003c\/strong\u003e is twofold: to provide a secure and convenient carrying handle for the SQA55 astrograph and to add a versatile, integrated mounting point for accessories like finder scopes or guide scopes via its built-in finder base slot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar SQA55 Handle Bar compatible with telescopes other than the SQA55?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this handle bar is specifically designed to interface with the four quick-release bases included on the Askar SQA55 optical tube. It is not a universal handle and will not fit other telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the quick-release feature on the Askar SQA55 Handle Bar work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe handle bar features a tool-free mechanism that allows it to lock directly onto the pre-installed quick-release bases on the SQA55. This design enables you to attach or detach the handle quickly and securely without needing any wrenches or screwdrivers, simplifying field setup and breakdown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of accessories can I mount on the Askar SQA55 Handle Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can mount any accessory that uses a standard Vixen-style or Synta-style finder scope dovetail bracket. This includes most optical finderscopes, red dot finders, and small guide scopes. The integrated multi-functional slot provides a secure platform for these aiming and guiding devices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Askar SQA55 Handle Bar help with balancing my SQA55 on a small mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its main purpose is for carrying and mounting accessories, the handle can subtly affect balance. More importantly, by providing a central mounting point for a guide scope, it helps keep the center of gravity more aligned with the mount's axis compared to mounting the same accessories off to one side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Askar SQA55 Handle Bar made of?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe handle bar is constructed entirely from metal, ensuring it is durable and rigid enough to support the weight of the telescope and any attached accessories without flexing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/download_list_1\/7.html\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\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":49879698112797,"sku":"ASK-ASKSHAN55","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Askar-SQA55-Quick-Release-Handle-Bar-1.jpg?v=1744300102"},{"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/collections\/Askar-Logo.jpg?v=1683750418","url":"https:\/\/davidastro.com\/collections\/askar.oembed?page=4","provider":"David Astro","version":"1.0","type":"link"}