{"product_id":"askar-0-74x-reducer-for-the-131f-131f-red","title":"Askar 0.74x Reducer for the 131F - 131F-RED","description":"\u003cdiv class=\"card__header\"\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003e\u003cstrong\u003ePre-Order Now for Arrival at Khan on May 22!\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/131F_RED_Banner.jpg?v=1778791392\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis 0.74× Reducer is the ideal companion for the Askar 131F telescope, reducing the focal ratio from f\/7.5 to f\/5.6. This dramatically shortens exposure times, allowing you to effortlessly capture wide-field nebulae,dense star clusters, as well as faint or fast-moving celestial objects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt also incorporates field-flattening correction capabilities,effectively eliminating field curvature to ensure sharp, clear stars from the center to the edges of the frame.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFeaturing a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M72×1 threads on both ends.The package includes an extension tube and comes with both M54×0.75 and M48×0.75 adapter rings that connect directly to the reducer for easy installation.The rear adapter ring features a built-in M48×0.75 thread, enabling direct attachment of 2-inch filters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConstructed using CNC machining, the reducer is equipped with metal thread caps on both ends. These caps protect the optics and offer convenient dust-proof storage, reflecting the product's professional quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card__section\"\u003e\n\u003cdiv class=\"rte text--pull\"\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）131F Focal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e733.6mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）131F Focal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ef\/5.6\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\u003e0.56kg\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\u003eM72*1\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":43243704025201,"sku":"ASK-131F-RED","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/131F_Reducer_Standing.webp?v=1778791573","url":"https:\/\/khanscope.com\/fr\/products\/askar-0-74x-reducer-for-the-131f-131f-red","provider":"Khan Scope Centre","version":"1.0","type":"link"}