{"product_id":"askar-sqa70-pro-70mm-f-4-6-sextuplet-apo","title":"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e70mm Aperture\u003c\/li\u003e\n\u003cli\u003e322mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.6 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eSextuplet Petzval APO Optical Design\u003c\/li\u003e\n\u003cli\u003e44mm Full-Frame Image Circle\u003c\/li\u003e\n\u003cli\u003eWeighs only 3kg\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 SQA70 Pro 70mm f\/4.6 Sextuplet APO\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA70 Pro is an advanced portable astrograph, combining a 70mm aperture with a fast f\/4.6 focal ratio for capturing vast deep-sky targets. Its sextuplet air-spaced Petzval optical system covers a 44mm full-frame image circle. With a native focal length of 322mm and an OTA weight of just 3kg, the SQA70 Pro is engineered for wide-field imaging from any location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-optical-path.jpg?v=1794411242\" alt=\"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO - Optical Path\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eA 6-Element Petzval System with SD and ED Glass\u003c\/h3\u003e\n\u003cp\u003eThe SQA70 Pro is built around a sextuplet (6-element) air-spaced Petzval APO optical design. With this Petzval design, no back focus calculation is required. To ensure high-contrast images with minimal false color, the design incorporates one SD (Super-low Dispersion) element as the second lens and one ED (Extra-low Dispersion) element as the fourth, providing improved chromatic correction and more consistent star images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-star-performance.jpg?v=1794411242\" alt=\"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO - Star Performance\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eFull-Frame 44mm Imaging Circle at f\/4.6\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for astrophotography, the SQA70 Pro illuminates a 44mm image circle, providing full coverage for cameras with full-frame and smaller sensors. The fast f\/4.6 focal ratio gathers significant light in shorter exposures, a critical advantage for capturing faint details in large emission nebulae like the North America Nebula (NGC 7000) or sprawling star fields in the Milky Way. At a 322mm focal length, you can frame these enormous celestial structures in their entirety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-features.jpg?v=1794411242\" alt=\"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO - Features\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eFlexible 36-68mm Back Focus and M42\/M48\/M54 Adapters\u003c\/h3\u003e\n\u003cp\u003eThe Petzval design simplifies your imaging train by eliminating the need for precise back focus spacing. Your camera can be placed anywhere within a generous 36mm to 68mm range from the rear adapter, with 55mm being the recommended distance for optimal results. The rear of the telescope includes M42, M48, and M54 adapters, giving you flexible connection options for a wide variety of cameras and accessories. For added convenience, the M48 adapter has a built-in M48x0.75 thread for direct installation of 2-inch filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-dew-shield-rings.jpg?v=1794411242\" alt=\"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO - Dew Shield and Tube Rings\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eA 3kg Portable Astrograph Design\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability, the Askar SQA70 Pro features a compact optical tube that is only 331mm long and weighs just 3kg. This light weight makes it easy to transport and set up at a dark sky site. A fixed dew shield blocks stray light and gives physical protection to the optical tube, and the telescope includes a tube ring, a dovetail plate and a durable Oxford cloth case for safe storage and transport.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-container\"\u003e\n\u003cdiv class=\"DAV-section-img\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-rotator-focuser.jpg?v=1794411242\" alt=\"Askar SQA70 Pro 70mm f\/4.6 Sextuplet APO - Rotator and Focuser\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-section-text\"\u003e\n\u003ch3\u003eSQA70 Pro vs. SQA70: An Upgraded Optical Path\u003c\/h3\u003e\n\u003cp\u003eThe SQA70 Pro is a direct evolution of the original Askar SQA70, with key upgrades centered on the optical design. While both are portable astrographs, the Pro model advances the formula in several ways.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Formula:\u003c\/strong\u003e The SQA70 Pro moves to an upgraded sextuplet air-spaced design for improved optical performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial Glass:\u003c\/strong\u003e It incorporates both SD and ED glass elements (in the second and fourth positions, respectively) for improved chromatic correction and more consistent star images.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Askar SQA70 Pro support full-frame cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Askar SQA70 Pro is designed to cover a \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, which provides complete coverage for full-frame sensors as well as smaller APS-C and Micro Four Thirds sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the back focus for the Askar SQA70 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThanks to its Petzval optical design, the Askar SQA70 Pro does not have a single, critical back focus distance. It supports a flexible range from \u003cstrong\u003e36mm to 68mm\u003c\/strong\u003e. The recommended connection length is 55mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach a 2-inch filter to the Askar SQA70 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar SQA70 Pro includes an M48 adapter that has a built-in \u003cstrong\u003eM48x0.75 (2-inch) filter thread\u003c\/strong\u003e. You can screw a standard 2-inch mounted filter directly into this adapter before attaching your camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main optical difference between the Askar SQA70 Pro and the original SQA70?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Askar SQA70 Pro features an upgraded \u003cstrong\u003esextuplet air-spaced optical design\u003c\/strong\u003e that incorporates both an SD glass element and an ED glass element. This results in more consistent star images and improved chromatic correction compared to the original SQA70.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much does the Askar SQA70 Pro weigh for mounting purposes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optical tube assembly (OTA) itself weighs \u003cstrong\u003e3kg (approx. 6.6 lbs)\u003c\/strong\u003e. With the included tube ring and dovetail plate, the total weight is 3.8kg (approx. 8.4 lbs).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat camera connections are included with the Askar SQA70 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe telescope comes with three standard adapters to connect your imaging equipment: \u003cstrong\u003eM54, M48, and M42\u003c\/strong\u003e. These offer flexible mounting options for various imaging accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a camera with 55mm of back focus. Will this work with the Askar SQA70 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. 55mm is the \u003cstrong\u003erecommended connection length\u003c\/strong\u003e for the Askar SQA70 Pro, and the Petzval design accepts any distance from 36mm to 68mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Askar SQA70 Pro suitable for imaging large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With its \u003cstrong\u003e322mm focal length\u003c\/strong\u003e and support for full-frame sensors, the Askar SQA70 Pro provides a very wide field of view. This suits framing enormous targets like the Andromeda Galaxy (M31) or the Orion Nebula.\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\u003e322mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eSextuplet air-spaced Petzval APO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Glass\u003c\/td\u003e\n\u003ctd\u003e1 SD element (second element), 1 ED element (fourth element)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImaging Circle\u003c\/td\u003e\n\u003ctd\u003e44mm (Full frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Range\u003c\/td\u003e\n\u003ctd\u003e36mm to 68mm (55mm recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear Connections\u003c\/td\u003e\n\u003ctd\u003eM42, M48 and M54 adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thread\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (2-inch) built into the M48 adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDew Shield\u003c\/td\u003e\n\u003ctd\u003eFixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e331mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight with Tube Ring \u0026amp; Dovetail\u003c\/td\u003e\n\u003ctd\u003e3.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase\u003c\/td\u003e\n\u003ctd\u003eOxford cloth case\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 Pro optical tube\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\"\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\"\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\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":68029891969309,"sku":"ASK-SQA70PRO","price":2632.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/sqa70-pro-5.jpg?v=1794414650","url":"https:\/\/davidastro.com\/products\/askar-sqa70-pro-70mm-f-4-6-sextuplet-apo","provider":"David Astro","version":"1.0","type":"link"}