{"product_id":"celestron-edgehd-800-ota-cge","title":"Celestron EdgeHD 8\" Optical Tube Assembly CGE Dovetail","description":"\u003cdiv class=\"product__title\"\u003e\n\u003ch2\u003e\u003cstrong\u003eCelestron EdgeHD 8\" 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\u003eCompact, powerful, and precision-engineered — the \u003cstrong\u003eCelestron EdgeHD 8\" OTA\u003c\/strong\u003e delivers flat-field, coma-free views designed for today’s large imaging sensors and premium wide-angle eyepieces. From deep-sky imaging to high-contrast visual astronomy, EdgeHD ensures \u003cstrong\u003epin-sharp stars right to the edge\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTrue Astrograph Quality\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUnlike standard SCTs that show field curvature on flat sensors, EdgeHD is engineered to deliver:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMore than 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 chips\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClean, contrast-rich visual views with wide eyepieces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePerfect for DSLR, mirrorless and dedicated astro-cameras.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eOptimised Design for Imaging \u0026amp; Visual Use\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical precision that protects your data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEdgeHD pairs premium optics with advanced mechanics to keep your target rock-steady.\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 to reduce 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 dust filters to equalise temperature faster\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFastar-compatible secondary\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\u003eUse it at native \u003cstrong\u003ef\/10\u003c\/strong\u003e, add a dedicated reducer for \u003cstrong\u003ef\/7\u003c\/strong\u003e, or explore ultra-wide \u003cstrong\u003ef\/2\u003c\/strong\u003e workflows.\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 is tested with an artificial star and imaging system before leaving the factory — ensuring accuracy across the full field, not just 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\u003e1.25\" star diagonal\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e40 mm Plössl 1.25\" eyepiece (51×)\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 203.2 mm (8\")\u003cbr\u003e\u003cstrong\u003eFocal length:\u003c\/strong\u003e 2032 mm • \u003cstrong\u003eFocal ratio:\u003c\/strong\u003e f\/10\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMagnification (supplied eyepiece):\u003c\/strong\u003e 51×\u003cbr\u003e\u003cstrong\u003eHighest useful magnification:\u003c\/strong\u003e 480×\u003cbr\u003e\u003cstrong\u003eLowest useful magnification:\u003c\/strong\u003e 29×\u003cbr\u003e\u003cstrong\u003eLimiting stellar magnitude:\u003c\/strong\u003e 14\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e\u003cbr\u003e• Rayleigh: 0.69\" • Dawes: 0.57\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight-gathering power:\u003c\/strong\u003e 843× (vs. human eye)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary obstruction:\u003c\/strong\u003e\u003cbr\u003e• Diameter 64 mm (31%) • Area 9.77%\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 432 mm (17\")\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 238 mm (9.37\")\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 6.35 kg (14 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 8\"?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✔ A true astrograph in a compact, travel-friendly OTA\u003cbr\u003e✔ Flat, coma-free imaging across large sensors\u003cbr\u003e✔ Excellent all-rounder for deep-sky, lunar and planetary work\u003cbr\u003e✔ Scalable imaging options: \u003cstrong\u003ef\/10 • f\/7 (with reducer) • f\/2 (Fastar)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA premium optical tube — light enough for portable setups, powerful enough for serious results.\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 or accessory without a securely fitted, certified solar filter. Permanent eye injury and equipment damage may occur.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897332973942,"sku":"050234103091","price":2109.99,"currency_code":"GBP","in_stock":true}],"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_6f6dfa2c-d475-4aec-8859-06a62903b760.webp?v=1767008924","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-edgehd-800-ota-cge","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}