{"product_id":"askar-0-74x-131f-reducer-ask-131fr","title":"Askar 0.74x 131F Reducer - ASK-131FR","description":"\u003cp class=\"e_text-102 s_title response-transition\"\u003eDesigned exclusively for the Askar 131F, this 0.74× reducer reduces the 131F focal ratio to F5.6, unlocking more potential for your imaging possibilities.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/9ac72586-fb96-41b0-ae16-dcb0ffc2f617_1024x1024.jpg?v=1778259736\"\u003e\u003c\/div\u003e\n\u003cp\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\/p\u003e\n\u003cp\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\/p\u003e\n\u003cp\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\/p\u003e\n\u003cp\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\/p\u003e\n\u003ch4 class=\"e_text-102 s_title response-transition\"\u003eOptical Path Diagram\u003c\/h4\u003e\n\u003cdiv\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/7e3a109f-9f5f-4b08-b223-f4823567ab21_1024x1024.webp?v=1778259862\"\u003e\u003c\/div\u003e\n\u003ch4 class=\"e_text-102 s_title response-transition\"\u003eSpot Diagram\u003c\/h4\u003e\n\u003cdiv\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/7b275b64-0102-442f-87cf-fa1816ab032f_1024x1024.webp?v=1778259893\"\u003e\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":50593566621915,"sku":"ASK-131FR","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0224\/6770\/6960\/files\/askar-accessories-askar-0-74x-131f-reducer-ask-131fr-1261404297.webp?v=1791392471","url":"https:\/\/telescopescanada.ca\/products\/askar-0-74x-131f-reducer-ask-131fr","provider":"Telescopes Canada","version":"1.0","type":"link"}