{"product_id":"celestron-reducer-lens-7x-edgehd-925","title":"Celestron 0.7x Reducer Lens for EdgeHD 925","description":"\u003ch2\u003eCelestron EdgeHD 0.7x Focal Reducer – 9.25”\u003c\/h2\u003e\n\u003cp\u003eDesigned specifically for the EdgeHD 9.25” optical tube, this premium 0.7x reducer shortens your focal length while preserving the flat-field performance that EdgeHD telescopes are known for. Engineered with a custom 4-element optical design, it delivers faster exposures, a wider field of view, and full compatibility with large-format sensors—ideal for astrophotographers seeking sharper, more efficient results.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimised Optical Design\u003c\/strong\u003e\u003cbr\u003eThe custom 4-element layout is matched to the 9.25” EdgeHD to ensure edge-to-edge sharpness and flat-field performance across full-frame sensors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFaster Imaging, Wider Views\u003c\/strong\u003e\u003cbr\u003eReduces focal ratio from f\/10 to f\/7, cutting exposure times by 50% while expanding the field of view by 43%—perfect for capturing larger nebulae and galaxies.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintains Full Back Focus\u003c\/strong\u003e\u003cbr\u003eUnlike generic reducers, this model preserves the native back focus of the EdgeHD system, supporting existing T-adapters and imaging accessories without additional spacing complications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Quality Optics\u003c\/strong\u003e\u003cbr\u003eFeatures high-index, low-dispersion Lanthanum glass elements to reduce chromatic aberration and improve contrast. Fully multi-coated surfaces maximise light transmission and colour accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Engineering\u003c\/strong\u003e\u003cbr\u003eLarge 60mm clear aperture ensures compatibility with full-frame sensors and off-axis guiders. All lens elements are edge-blackened to reduce internal reflections and enhance image contrast.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt for Astrophotography\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Thread-On Mounting\u003c\/strong\u003e\u003cbr\u003eAttaches securely to the 3.25\" rear threads of the EdgeHD OTA for stable alignment and minimal vignetting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMachined Aluminium Body\u003c\/strong\u003e\u003cbr\u003eDurable CNC-machined housing ensures precise spacing of optics and long-term mechanical integrity. Includes threaded metal end caps to protect the lens assembly when not in use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFull Imaging System Compatibility\u003c\/strong\u003e\u003cbr\u003eWorks seamlessly with Celestron’s Fastar technology and HyperStar systems, offering a wide range of focal lengths—from f\/10 to f\/7 and f\/2 imaging (with optional accessories).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAt a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCustom 4-element reducer for 9.25” EdgeHD\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduces focal ratio from f\/10 to f\/7 for faster exposures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains flat-field correction and full back focus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e60mm clear aperture supports full-frame sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePremium Lanthanum optics with full multi-coatings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-machined aluminium construction with protective caps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with Fastar for ultra-fast f\/2 imaging setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA must-have for serious deep-sky imagers, the EdgeHD 0.7x Focal Reducer transforms your 9.25” EdgeHD into a more versatile, efficient, and high-performance imaging system—without compromising optical quality.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897344180598,"sku":"050234942454","price":499.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/Celestron-Reducer-Lens-7x-EdgeHD-925-Product-Photo-1.webp?v=1757515344","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-reducer-lens-7x-edgehd-925","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}