{"product_id":"celestron-ultima-edge-eyepiece-1-25-18mm","title":"Celestron Ultima Edge 1.25\" 18mm Eyepiece","description":"\u003ch2\u003e\u003cstrong\u003eCelestron Ultima Edge 18mm Eyepiece\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFlat-Field Design | 65° Wide Angle | 8-Element Optics | 1.25” Barrel | Parfocal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlock detailed, high-power views of the Moon, planets, and deep sky treasures with the \u003cstrong\u003eUltima Edge 18mm Eyepiece\u003c\/strong\u003e. Part of Celestron’s premium flat-field series, this eyepiece delivers pinpoint-sharp images across the entire field of view, giving you a clearer picture with minimal distortion—edge to edge.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePrecision Optics for Sharper Viewing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8-Element Optical Design\u003c\/strong\u003e\u003cbr\u003eDesigned with a sophisticated eight-element lens layout, this eyepiece corrects for field curvature and other common optical aberrations, providing sharp, high-contrast images.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFully Multi-Coated Glass\u003c\/strong\u003e\u003cbr\u003eEvery optical surface is fully multi-coated for improved light transmission and colour fidelity, ensuring bright, high-resolution views even at higher magnifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e65° Apparent Field of View\u003c\/strong\u003e\u003cbr\u003eOffers an immersive, wide-angle view—ideal for observing lunar detail, planetary features, globular clusters, and other compact deep-sky objects.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePremium Construction and Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurable, Anodised Aluminium Housing\u003c\/strong\u003e\u003cbr\u003eThe body is precision-machined from high-grade aluminium with a sleek black anodised finish for durability and style.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1.25” Filter-Compatible Barrel\u003c\/strong\u003e\u003cbr\u003eThe insert barrel is threaded to accept standard 1.25” filters and adapters, expanding your viewing options and allowing easy integration with existing accessories.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eErgonomic Rubber Grip\u003c\/strong\u003e\u003cbr\u003eA textured rubber grip ring provides a secure hold and makes adjusting or removing the eyepiece easy—even with gloves on or in cold conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eComfortable, Eyeglass-Friendly Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e20mm Long Eye Relief\u003c\/strong\u003e\u003cbr\u003eWith generous eye relief and a soft rubber eyecup, the Ultima Edge 18mm is comfortable for both eyeglass wearers and non-eyeglass users. Perfect for extended viewing sessions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eParfocal Convenience\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Swaps, Minimal Refocus\u003c\/strong\u003e\u003cbr\u003eThe 18mm model is parfocal within the Ultima Edge range—meaning you can switch between other parfocal eyepieces in the series without needing to refocus. It’s a great time-saver and makes your observing sessions smoother and more efficient.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: The 24mm Ultima Edge is not parfocal. Parfocality is maintained only when switching between parfocal eyepieces within the Ultima Edge series and not across other brands or lines.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eWhether you're hunting for fine lunar detail or exploring Saturn’s rings, the \u003cstrong\u003eCelestron Ultima Edge 18mm Eyepiece\u003c\/strong\u003e offers the clarity, comfort, and quality construction needed to enhance your observing experience.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897339691382,"sku":"050234934527","price":149.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/CelestronUltimaEdgeEyepiece-1.25_24mmProductPhoto1_57733b49-befa-4db9-b8e4-4498fbec479c.webp?v=1753281627","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-ultima-edge-eyepiece-1-25-18mm","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}