{"product_id":"askar-0-74x-111f-reducer-askar111fr","title":"Askar 0.74x 111F Reducer - ASKAR111FR","description":"\u003cdiv class=\"ast-product-tabs-content__container active-container\" id=\"tab--description\"\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Askar 0.74× reducer, specially optimized for the Askar 111F, is designed to unlock a broader and more efficient deep-sky astrophotography experience.\u003c\/p\u003e\n\u003cp\u003eThe 0.74× reducer brings the Askar 111F's focal ratio down to F5.1, delivering a faster optical system while incorporating built-in field-flattening correction to effectively eliminate field curvature - ensuring sharp and clear stars from the center to the very edges of the frame. The shorter focal ratio provides a wider field of view and shorter exposure times, making it particularly well-suited for capturing expansive nebulae, star clusters, and faint or fast-moving celestial objects.\u003c\/p\u003e\n\u003cp\u003eThe Askar 111F 0.74× Reducer features a triplet optical design and supports a 44mm full-frame image circle. Its back focus is 55mm (measured from the M48 thread), and both ends feature M68×1 threads for optimal adaptability and stability.\u003c\/p\u003e\n\u003cp\u003eThe 111F photographic extension tube includes M54×0.75 and M48×0.75 adapters, allowing for direct and convenient connection to the 111F 0.74× reducer. The reducer’s rear adapter ring features a built-in M48×0.75 standard 2-inch filter thread, enabling direct installation of various astronomical filters to accommodate different imaging needs.\u003c\/p\u003e\n\u003cp\u003eThe entire reducer is precision CNC-machined and comes with front and rear metal threaded caps to protect the optics from dust when not in use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan class=\"ast-product-tabs-content__anchor\" id=\"tab--specs-anchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"ast-product-tabs-content__container\" id=\"tab--specs\"\u003e\n\u003ch2\u003e \u003cbr\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）60F Focal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e566mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）60F Focal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ef\/5.1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLens Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTriplet design\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBack Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e55mm（from the base of M48 male thread）\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.5kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eM68*1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003eSize Diagram\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/0e1cb978-f3d5-4c9a-8429-9f624c17f5a1.webp?v=1778277292\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eInstallation\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/2867ac9a-f6ea-40c3-bc6f-8722e38d4e4f.webp?v=1778277292\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eOptical Path Diagram\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/1a8e1b6b-8c51-4525-b753-3ee73722e62e.webp?v=1778277292\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eSpot Diagram\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/f8145de5-dc89-42bc-a332-f4b7deacfff7.webp?v=1778277293\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":48820364181723,"sku":"ASKAR111FR","price":409.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/askar-accessories-askar-0-74x-111f-reducer-askar111fr-1240875027.webp?v=1780073348","url":"https:\/\/telescopescanada.ca\/fr\/products\/askar-0-74x-111f-reducer-askar111fr","provider":"Telescopes Canada","version":"1.0","type":"link"}