{"product_id":"celestron-edgehd-925-ota-cge","title":"Celestron EdgeHD 9.25\" Optical Tube Assembly CGE Dovetail","description":"\u003cdiv class=\"product__title\"\u003e\n\u003ch2\u003e\u003cstrong\u003eCelestron EdgeHD 9.25\" Optical Tube Assembly (CGE Dovetail)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eSee the Universe in True HD\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCelestron EdgeHD 9.25\" OTA\u003c\/strong\u003e delivers flat-field, coma-free performance designed for today’s large imaging sensors and premium wide-angle eyepieces. Whether you’re focused on deep-sky imaging or visual observation, EdgeHD ensures \u003cstrong\u003epin-sharp stars from centre to edge\u003c\/strong\u003e, outstanding contrast, and reliable performance night after night.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTrue Astrograph Quality\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eStandard SCTs can show field curvature that becomes obvious on flat camera sensors. EdgeHD has been engineered differently — delivering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOver three-times flatter focal plane\u003c\/strong\u003e than traditional SCTs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTight, round star shapes across large-format sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBeautifully corrected views with premium wide-field eyepieces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePerfect for DSLR, mirrorless, CMOS astronomy cameras — and demanding imagers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eOptimised for Imaging \u0026amp; Visual Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003ePrecision Engineering Throughout\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCelestron combines advanced optics with carefully refined mechanics to keep images sharp and stable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandout features include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMirror clutches\u003c\/strong\u003e minimise image shift during long exposures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRear cooling vents\u003c\/strong\u003e with integrated dust filters help optics acclimate faster\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFastar-compatible design\u003c\/strong\u003e for ultra-fast \u003cstrong\u003ef\/2\u003c\/strong\u003e imaging with third-party accessories\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt native \u003cstrong\u003ef\/10\u003c\/strong\u003e, the scope offers superb image scale and detail.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eIndividually Tested Before It Ships\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eEvery EdgeHD telescope is tested with an artificial star and imaging system before leaving the factory, ensuring optical accuracy across the full field — not just at the centre.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e9×50 finderscope\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2\" mirror diagonal\u003c\/strong\u003e with 1.25\" adapter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e23 mm Luminos 2\" wide-angle eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCGE dovetail bar\u003c\/strong\u003e for secure mounting on compatible mounts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOptical design:\u003c\/strong\u003e EdgeHD Schmidt-Cassegrain\u003cbr\u003e\u003cstrong\u003eAperture:\u003c\/strong\u003e 234.95 mm (9.25\")\u003cbr\u003e\u003cstrong\u003eFocal length:\u003c\/strong\u003e 2350 mm • \u003cstrong\u003eFocal ratio:\u003c\/strong\u003e f\/10\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMagnification (supplied eyepiece):\u003c\/strong\u003e 102×\u003cbr\u003e\u003cstrong\u003eHighest useful magnification:\u003c\/strong\u003e 555×\u003cbr\u003e\u003cstrong\u003eLowest useful magnification:\u003c\/strong\u003e 34×\u003cbr\u003e\u003cstrong\u003eLimiting stellar magnitude:\u003c\/strong\u003e 14.4\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e\u003cbr\u003e• Rayleigh: 0.59\" • Dawes: 0.49\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight-gathering power:\u003c\/strong\u003e 1127× (vs. human eye)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary obstruction:\u003c\/strong\u003e\u003cbr\u003e• Diameter 85 mm (36%) • Area 13%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptics:\u003c\/strong\u003e StarBright XLT coatings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube:\u003c\/strong\u003e Aluminum\u003cbr\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e 559 mm (22\")\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 271.8 mm (10.7\")\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.53 kg (21 lb)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDovetail:\u003c\/strong\u003e CGE dovetail bar\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy Choose the EdgeHD 9.25\"?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✔ Astrograph-grade flat field for modern imaging\u003cbr\u003e✔ Compact, lighter OTA with excellent optical punch\u003cbr\u003e✔ Superb all-rounder for galaxies, clusters, nebulae \u0026amp; lunar\/planetary\u003cbr\u003e✔ Expandable to ultra-fast \u003cstrong\u003ef\/2\u003c\/strong\u003e workflows\u003c\/p\u003e\n\u003cp\u003eA premium, versatile optical tube — ideal for dedicated imagers and advanced observers alike.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSolar Safety Reminder\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNever look directly at the Sun through any telescope without an approved, secure solar filter. Severe and permanent eye injury or equipment damage may occur.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897333006710,"sku":"050234104098","price":3369.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/Celestron-EdgeHD-9.25-Optical-Tube-Assembly-CGE-Dovetail-91040-XLT-CGL-3.webp?v=1767008626","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-edgehd-925-ota-cge","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}