{"product_id":"starizona-apex-ed-0-65x-reducer-flattener","title":"Starizona Apex ED 0.65x Reducer \/ Flattener","description":"\u003ch1 class=\"product-title\"\u003eApex ED 0.65x Reducer \/ Flattener\u003c\/h1\u003e\n\u003cp\u003eWith the Apex ED reducer, an f\/5.5 apo refractor becomes an incredibly fast f\/3.6 astrograph. A slower f\/9 telescope like an RC becomes a speedy f\/5.9 system. The reduction factor provides a 1.5x wider field of view and shortens exposure times by a factor of 2.4x!\u003c\/p\u003e\n\u003cp\u003eThe Apex ED reducer features extra-low disperion glass to eliminate chromatic aberration and to provide sharp star images over a 30mm image circle, capable of working with most popular CCD, CMOS and DSLR cameras up to APS-C format.\u003c\/p\u003e\n\u003cp\u003eThe Apex ED reducer fits into a standard 2\" focuser. It has M42 T-threads on the camera side, and it can accept a standard 2\" (M48) filter on the telescope side for easy use of light-pollution or other filters. On Meade ACF telescopes, the Apex can be attached using a 2\" visual back.\u003c\/p\u003e\n\u003cp\u003eFor select refractors, we make\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"threaded Adapter\" href=\"https:\/\/starizona.com\/products\/apexed-threaded-focuser-adapter\"\u003eoptional threaded adapters\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eto allow direct threaded attachment of the Apex reducer, eliminating the possibility of tilt introduced by the standard focuser clamp ring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\"L\" and \"S\" Versions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo optimize the Apex ED for the best possible performance, there are two versions of the lens. The \"L\" version is designed for telescopes with focal lengths 500mm and longer. This includes most larger (100mm+) refractors and all RC and ACF telescopes. The \"S\" version is for telescopes with focal lengths from 300-500mm, including most 60-80mm apo refractors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBackfocus\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe nominal backfocus distance from the Apex ED reducer's T-threads to the image sensor depends slightly on the focal length of the telescope. It is at least 55mm in all configurations. The table below shows the optimum backfocus for various focal lengths. Please contact us for help in choosing the right adapters or spacers necessary for your setup.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0327\/2569\/6648\/files\/Apex-Chart.png?v=1611097946\" alt=\"Apex Backfocus Chart\" width=\"530\" height=\"419\" height:396px=\"\" width:100=\"\" max-width:500px=\"\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0327\/2569\/6648\/files\/threaded-adapter-set-up.jpg\" width=\"1166\" height=\"435\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduction Factor\u003c\/strong\u003e: 0.65x\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Circle\u003c\/strong\u003e: 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackfocus\u003c\/strong\u003e: 55-62mm (depending on telescope focal length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Design\u003c\/strong\u003e: 5 elements with ED glass, fully multi-coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Diameter\u003c\/strong\u003e: 2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Thread\u003c\/strong\u003e: M42 (T-thread)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Thread\u003c\/strong\u003e: M48 (2\" filter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (Apex ED L)\u003c\/strong\u003e: 2.97\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Apex ED L)\u003c\/strong\u003e: 0.7 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (Apex ED S)\u003c\/strong\u003e: 3.26\";\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (Apex ED S)\u003c\/strong\u003e: 0.72 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e1x Apex Field flattener and reducer\u003c\/p\u003e\n\u003cp\u003e2x 1mm Spacer\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/starizona-warranty\" target=\"_blank\"\u003eStarizona 1-Year Warranty \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/starizona-warranty\" target=\"_blank\"\u003eApex Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Starizona","offers":[{"title":"Apex Short (S)","offer_id":43969695187173,"sku":"SZA-APEXED-S","price":480.0,"currency_code":"CAD","in_stock":true},{"title":"Apex Long (L)","offer_id":43969695219941,"sku":"SZA-APEXED-L","price":629.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/starizona-apex-ed-0-65x-reducer-flattener-astronomy-plus-1.webp?v=1690489326","url":"https:\/\/istronomyplus.com\/products\/starizona-apex-ed-0-65x-reducer-flattener","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}