{"product_id":"tele-vue-delite-3mm-62-eyepiece","title":"Tele Vue DeLite 3mm 62° Eyepiece - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003e3mm Focal Length\u003c\/li\u003e\n  \u003cli\u003e62° Apparent Field of View\u003c\/li\u003e\n  \u003cli\u003e1.25\" Barrel Diameter\u003c\/li\u003e\n  \u003cli\u003e20mm Eye Relief\u003c\/li\u003e\n  \u003cli\u003e3.2mm Field Stop\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n  \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n  \u003cli\u003eFAQ\u003c\/li\u003e\n  \u003cli\u003eSpecifications\u003c\/li\u003e\n  \u003cli\u003eIn the Box\u003c\/li\u003e\n  \u003cli\u003eDownloads\u003c\/li\u003e\n  \u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eTele Vue DeLite 3mm 62° Eyepiece - 1.25\"\u003c\/h2\u003e\n      \u003cp\u003eThe Tele Vue DeLite 3mm 62° Eyepiece is an ultra-short focal length optic engineered for maximum magnification in telescopes with short to medium focal lengths. It maintains the 20mm eye relief consistent across the series, specifically addressing the ergonomics and eye placement difficulties typically found in 3mm wide-angle designs. By utilizing a 62° apparent field, the eyepiece minimizes spherical aberration of the exit pupil (SAEP), facilitating stable on-axis viewing of high-contrast planetary features.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003e20mm Eye Relief and Mechanical Alignment\u003c\/h3\u003e\n      \u003cp\u003eThe 20mm eye relief is a critical mechanical constraint that allows for a full field of view while wearing eyeglasses, a rarity in the sub-5mm focal length class. The sliding eyeguard system locks into position to provide a physical reference for the eye, reducing the sensitivity to side-to-side head movement that can cause blackouts at small exit pupils.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eDioptrx Integration:\u003c\/strong\u003e The top housing accepts the Tele Vue Dioptrx corrector, enabling observers to correct for eyesight astigmatism directly within the optical train.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCompact Mass:\u003c\/strong\u003e At 7.8 ounces, the 3mm DeLite prevents the balance issues common when using larger, multi-element ultra-wide eyepieces on lightweight refractor mounts.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eExtreme Magnification and Exit Pupil Constraints\u003c\/h3\u003e\n      \u003cp\u003eIn an f\/7 apochromatic refractor, the 3mm focal length yields a 0.43mm exit pupil, providing high-power views for splitting tight double stars or observing small planetary nebulae. In an f\/10 Schmidt-Cassegrain (SCT), it produces 666× magnification and a 0.3mm exit pupil, which typically exceeds atmospheric seeing limits but remains a viable tool for diffraction-limited testing in superior conditions.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSmall Exit Pupil Behavior:\u003c\/strong\u003e Observers may notice eye floaters more prominently due to the 0.6mm or smaller exit pupil produced in telescopes faster than f\/5.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eParfocality:\u003c\/strong\u003e This 3mm model is parfocal with Group B Tele Vue 1.25\" eyepieces, including the Plössl and Panoptic series.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eOperational Comparison\u003c\/h3\u003e\n      \u003cp\u003eThe Tele Vue DeLite 3mm serves as a high-resolution specialist compared to wider-field or zoom-based alternatives.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 3-6mm Nagler Zoom:\u003c\/strong\u003e The DeLite 3mm offers a wider 62° field (compared to 50°) and twice the eye relief (20mm vs 10mm), though it lacks the focal length flexibility of the zoom.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003evs. 3.5mm Delos:\u003c\/strong\u003e The DeLite is significantly smaller and lighter, making it preferable for travel or binoviewing, while the Delos provides a wider 72° field.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Tele Vue DeLite 3mm suitable for planetary viewing?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe Tele Vue DeLite 3mm is designed for very high magnification on planets, though its performance depends on atmospheric seeing; it produces a 0.6mm exit pupil in an f\/5 system, which is ideal for resolving fine planetary bands on Jupiter.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Tele Vue DeLite 3mm work with Dioptrx?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe Tele Vue DeLite 3mm is fully compatible with the Dioptrx astigmatism corrector, which replaces the need for eyeglasses by attaching directly to the eyepiece housing.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs eye placement sensitive on the Tele Vue DeLite 3mm?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eDue to the small exit pupil, eye placement is more critical than with longer focal lengths; however, the Tele Vue DeLite 3mm uses an adjustable, locking eyeguard to help the observer maintain the correct distance and alignment.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Tele Vue DeLite 3mm compare to a Barlowed eyepiece?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eWhile a longer DeLite paired with a Tele Vue Barlow can achieve similar magnifications, the Tele Vue DeLite 3mm is a dedicated single-eyepiece solution that reduces the number of air-to-glass surfaces and minimizes the weight of the focuser assembly.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e3.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.8 oz (221 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eParfocal\u003c\/td\u003e\n\u003ctd\u003eGroup B\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n \u003cli\u003e\n    \u003cdiv\u003e\n      \u003cul class=\"DAV-grid\"\u003e\n        \u003cli class=\"DAV-grid-item\"\u003e\n          \u003cimg alt=\"DeLite 3mm Eyepiece\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-Delite-3mm-Eyepiece-1.jpg?v=1776301479\" class=\"DAV-img-box\"\u003e\n          \u003cdiv\u003e\n            \u003cp class=\"DAV-item-title\"\u003eDeLite 3mm Eyepiece\u003c\/p\u003e\n            \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n        \u003cli class=\"DAV-grid-item\"\u003e\n          \u003cimg alt=\"Dust Cap Top\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TeleVue-2inch-Dustcap.jpg?v=1774403118\" class=\"DAV-img-box\"\u003e\n          \u003cdiv\u003e\n            \u003cp class=\"DAV-item-title\"\u003eDust Cap (Top)\u003c\/p\u003e\n            \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n        \u003cli class=\"DAV-grid-item\"\u003e\n          \u003cimg alt=\"1.25-inch Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-Dust-Cap-1-25inch-Bottom.jpg?v=1776216395\" class=\"DAV-img-box\"\u003e\n          \u003cdiv\u003e\n            \u003cp class=\"DAV-item-title\"\u003eDust Cap (Bottom)\u003c\/p\u003e\n            \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cdiv\u003e\n      \u003cul class=\"DAV-grid\"\u003e\n        \u003cli class=\"DAV-grid-item\"\u003e\n          \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-DeLite-Manual.pdf?v=1776216181\" target=\"_blank\"\u003e\n            \u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n            \u003cdiv\u003e\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\u003c\/div\u003e\n          \u003c\/a\u003e\n        \u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cp\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/televue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTeleVue 5-Year Limited Warranty for Telescopes and Accessories\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51174962463005,"sku":"TV-EDE-03.0","price":305.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-Delite-3mm-Eyepiece-1.jpg?v=1776303403","url":"https:\/\/davidastro.com\/fr-eu\/products\/tele-vue-delite-3mm-62-eyepiece","provider":"David Astro","version":"1.0","type":"link"}