{"product_id":"celestron-deluxe-off-axis-guider","title":"Celestron Deluxe Off-Axis Guider","description":"\u003ch2\u003eCelestron Off-Axis Guider\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAccurate Guiding for Long Focal Length Astroimaging\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Celestron Off-Axis Guider (OAG) is a vital accessory for deep-sky imaging at long focal lengths. It enables highly precise autoguiding by using a prism to pick off light from a star just outside the main imaging field, ensuring the guide camera sees exactly what the imaging camera does. This eliminates issues like differential flexure and mechanical errors—resulting in sharper images with perfectly round stars.\u003c\/p\u003e\n\u003ch3\u003eWhy Use an Off-Axis Guider?\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional guide scopes, off-axis guiding uses your main optical path, improving guiding accuracy. However, OAGs can present some challenges:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFinding a usable guide star\u003c\/strong\u003e can be difficult due to a limited field of view.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAchieving focus\u003c\/strong\u003e for both the guide and imaging cameras can require trial and error.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdapter and spacing requirements\u003c\/strong\u003e can complicate setup and increase cost.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCelestron’s Off-Axis Guider overcomes these obstacles with a smarter, all-in-one design.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLarge 12.5 mm Prism\u003c\/strong\u003e\u003cbr\u003eAdjustable position brings the prism closer to the optical axis, helping you find brighter guide stars—even with larger sensor cameras.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHelical Focuser (Fixed Orientation)\u003c\/strong\u003e\u003cbr\u003eSmooth, precise focus for your autoguider without rotating or shifting its position.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Adapter Kit Included\u003c\/strong\u003e\u003cbr\u003eEverything you need to connect common cameras and telescope setups—reducing cost and complexity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSCT\/EdgeHD Adapter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFemale and Male M48 \u0026amp; M42 (T-thread) Adapters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1.25\" Autoguider Adapter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e3x T-thread Spacers for proper back-focus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHelical Focuser Travel:\u003c\/strong\u003e 8 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTelescope Connection:\u003c\/strong\u003e M42 T-thread, M48, SCT\/EdgeHD\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAutoguider Connection:\u003c\/strong\u003e M42 T-thread, 1.25\"\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCamera Connection:\u003c\/strong\u003e M42 T-thread, M48\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSchmidt-Cassegrain, EdgeHD, and other long focal length telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDSLR and CCD\/CMOS astroimaging setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImaging with full-frame or large APS-C sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're tackling faint galaxies or fine planetary detail, the Celestron Off-Axis Guider ensures your tracking is as accurate as your optics.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897343951222,"sku":"050234936484","price":314.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/Celestron-Deluxe-Off-Axis-Guider-Product-Photo-1.webp?v=1757517936","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-deluxe-off-axis-guider","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}