{"product_id":"celestron-omni-eyepiece-1-25-4mm","title":"Celestron Omni 1.25\" 4mm Eyepiece","description":"\u003ch2\u003eCelestron Omni 4mm Eyepiece – 1.25\" Barrel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-High Magnification Plössl Eyepiece for Lunar, Planetary \u0026amp; Double Star Observing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePush your telescope to its magnification limits with the \u003cstrong\u003eCelestron Omni 4mm Eyepiece\u003c\/strong\u003e. Designed for high-power planetary and lunar viewing, this compact eyepiece delivers crisp, high-contrast images thanks to its quality 4-element Plössl construction and fully multi-coated optics. Whether you're observing fine crater detail on the Moon or resolving close double stars, the Omni 4mm gives you the clarity and performance to see more.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e4mm Focal Length\u003c\/strong\u003e – Delivers ultra-high magnification for detailed observations of planets and lunar features\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e50° Apparent Field of View\u003c\/strong\u003e – Wide enough to comfortably observe fast-moving or tightly framed targets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e6mm Eye Relief\u003c\/strong\u003e – Suitable for brief high-magnification views; fold-down rubber eyecup helps reduce stray light\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e4-Element Plössl Design\u003c\/strong\u003e – Offers a sharp, flat image field with minimal distortion and chromatic aberration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFully Multi-Coated Optics\u003c\/strong\u003e – Improves light transmission and image brightness across all elements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBlackened Lens Edges\u003c\/strong\u003e – Reduces internal reflections to enhance contrast\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMatte Aluminium Housing\u003c\/strong\u003e – Precision-machined with a two-step anodised finish for durability and anti-glare performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandard 1.25” Barrel\u003c\/strong\u003e – Threaded to accept 1.25\" filters for added versatility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBest For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLunar Observing\u003c\/strong\u003e – Inspect crater walls, central peaks, and shadow transitions in sharp relief\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlanetary Detail\u003c\/strong\u003e – Observe surface markings on Mars, Jupiter’s cloud belts, or Saturn’s ring gaps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDouble Stars\u003c\/strong\u003e – Excellent for splitting tight binaries with fine resolution\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e4mm (0.16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e50°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e6mm (0.24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-element Plössl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\" (32mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eFully multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Compatibility\u003c\/td\u003e\n\u003ctd\u003eYes – 1.25\" threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003cp\u003eBuilt to deliver precise, high-magnification performance, the \u003cstrong\u003eCelestron Omni 4mm Eyepiece\u003c\/strong\u003e is ideal for advanced planetary and lunar observing sessions. Affordable, compact, and optically refined, it’s an essential tool for any astronomer aiming to push their telescope’s resolving power to its full potential.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897338872182,"sku":"050234933162","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/Celestron-Omni-Eyepiece-1-25-4mm-product-photo-2.webp?v=1771247622","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-omni-eyepiece-1-25-4mm","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}