{"product_id":"tele-vue-nagler-t6-5mm-82-degree-eyepiece","title":"Tele Vue Nagler T6 5mm 82° Eyepiece - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFocal Length: 5mm\u003c\/li\u003e\n\u003cli\u003eApparent Field of View: 82°\u003c\/li\u003e\n\u003cli\u003eBarrel Size: 1.25\"\u003c\/li\u003e\n\u003cli\u003eEye Relief: 12mm\u003c\/li\u003e\n\u003cli\u003eOptical Design: Nagler Type 6 (7 elements)\u003c\/li\u003e\n\u003cli\u003eWeight: 7.2 oz (0.20 kg)\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\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\u003eThe Planetary Powerhouse Nagler Eyepiece\u003c\/h2\u003e\n\u003cp\u003eThe Tele Vue Nagler T6 5mm 82° Eyepiece is a high-magnification specialist, designed to deliver expansive, sharp views of planets and small deep-sky objects in a compact 1.25\" format. It leverages the renowned Nagler design to create an immersive \"spacewalk\" experience, transforming high-power observing from a keyhole view into a wide, engaging window on the universe. This eyepiece is for the observer who refuses to sacrifice field of view for magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eNagler Type 6 Optical Design for High Power\u003c\/h3\u003e\n\u003cp\u003eThe 5mm Nagler T6 is built on a 7-element optical design that controls aberrations like astigmatism and field curvature, even at this demanding focal length. Using a unique pairing of high-index glasses, this design delivers sharp, high-contrast images from the center to the edge of the field. The result is a flat, well-corrected view that allows you to study fine planetary detail without constant re-centering.\u003c\/p\u003e\n\u003cp\u003eThis level of correction is what separates the Nagler from simpler wide-field designs. When you use the 5mm in a quality telescope, planetary limbs are sharp, and stars in the tight cores of globular clusters resolve into distinct points. It’s an optical system engineered to handle the high magnifications needed for detailed lunar and planetary work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFully Multi-Coated for Maximum Contrast\u003c\/h3\u003e\n\u003cp\u003eEvery air-to-glass surface in the 5mm Nagler T6 receives a robust multi-coating optimized for maximum light throughput and minimal scatter. At high magnifications, where targets are often dim and subtle details are critical, this is not a luxury. The coatings ensure that the faint festoons in Jupiter's belts or the delicate Cassini Division in Saturn's rings are rendered with as much contrast as your telescope and seeing conditions will allow.\u003c\/p\u003e\n\u003cp\u003eThe lens edges are also blackened to further suppress internal reflections. This attention to detail reduces stray light, which enhances the perceived blackness of the space background. This makes faint objects, like the central stars of planetary nebulae, easier to detect against the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 82° Spacewalk Experience\u003c\/h3\u003e\n\u003cp\u003eThe signature feature of any Nagler is the 82° apparent field of view. At the high power a 5mm focal length provides, this wide field is transformative. Instead of a narrow, restrictive view of a planet, you see the target suspended in a wide, black field of space, allowing you to observe for longer periods without the object drifting out of sight. This makes for a more relaxed and immersive session.\u003c\/p\u003e\n\u003cp\u003eOn a target like the globular cluster M13, the 5mm Nagler provides enough power to resolve the core while the 82° field frames the cluster beautifully. The experience is less like looking *at* an object and more like being *in* the starfield. This is the core of the \"spacewalk\" effect that made the Nagler design famous.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConsistent Eye Relief and Viewing Comfort\u003c\/h3\u003e\n\u003cp\u003eThe Nagler T6 series was designed with a consistent 12mm of eye relief across all focal lengths. This means you can switch between them without having to significantly change your head position. The 5mm model features an adjustable rubber eyeguard that you can raise to set the perfect distance, which is crucial for blocking stray light and maintaining a stable view.\u003c\/p\u003e\n\u003cp\u003eWhile 12mm of eye relief is not enough for observers who must wear glasses to correct for significant astigmatism, it is comfortable for most users. The design provides a generous eye lens, making the eyepiece feel less constricted than typical high-power oculars. This eyepiece is also compatible with Tele Vue's DIOPTRX astigmatism correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStandard 1.25\" Barrel and Filter Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 5mm Nagler T6 uses a standard 1.25\" barrel, making it compatible with the vast majority of telescopes and focusers. The barrel is threaded to accept standard 1.25\" filters, a vital feature for planetary observers who rely on color filters to enhance specific details, like Mars's polar caps or Jupiter's Great Red Spot. The barrel also features a safety undercut to help prevent it from accidentally falling out of the focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSmall Form Factor for Easy Balancing\u003c\/h3\u003e\n\u003cp\u003eUnlike many extreme wide-field eyepieces, the Nagler T6 series is intentionally compact and lightweight. The 5mm model weighs only 7.2 ounces, which means it won’t cause significant balance issues when used in smaller refractors or on Dobsonians. Its size also means it is nearly parfocal with Tele Vue's Plössl eyepieces, minimizing the amount of refocusing needed when switching between low-power finding and high-power observing.\u003c\/p\u003e\n\u003cp\u003eThis makes the 5mm T6 an excellent choice for a \"grab-and-go\" kit. It provides the performance of a much larger eyepiece in a package that doesn't demand a heavy-duty mount or extensive counterweighting. It is a limitation, however, that the compact size contributes to its shorter eye relief compared to larger eyepieces like the Delos series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eObserving with the Nagler T6 5mm\u003c\/h3\u003e\n\u003cp\u003eOn a night of steady seeing, place the 5mm Nagler T6 in a quality 8-inch Schmidt-Cassegrain telescope for a magnification of 406x. Center on Saturn. The planet and its rings fill a pleasing portion of the 82° field, leaving ample black space around them. As your eye settles, the Cassini Division snaps into focus as a sharp, dark line tracing the ansae.\u003c\/p\u003e\n\u003cp\u003eYou can hold the view for long stretches, watching the subtle banding on the planet's globe without the need to nudge the telescope constantly. The wide field makes tracking effortless, even on a manual mount. This is where the Nagler design proves its worth, combining high-power planetary reach with the comfort of a wide-field view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing Your High-Power Nagler\u003c\/h3\u003e\n\u003cp\u003eThe Nagler T6 series offers several high-power options. The 5mm is often the right choice when you need a significant step up in magnification for planetary viewing or splitting tight double stars.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Nagler T6 7mm:\u003c\/strong\u003e The 7mm is an excellent all-around high-power eyepiece, but the 5mm provides a 40% increase in magnification. When seeing conditions are good, the 5mm will reveal finer detail on Jupiter and Saturn that the 7mm may only hint at. The 7mm is more forgiving on nights of average seeing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Nagler T6 3.5mm:\u003c\/strong\u003e The 3.5mm pushes magnification to the limit for most telescopes and atmospheric conditions. The 5mm is a more versatile choice, hitting the sweet spot for high-power observing on more nights of the year. The 3.5mm is a specialist tool for exceptional seeing or for use with shorter focal length telescopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Nagler T6 5mm good for planetary viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is an exceptional planetary eyepiece. Its 5mm focal length provides high magnification, while the 82° field of view makes it easy to track planets without them quickly drifting out of view, offering a more comfortable and immersive experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 5mm Nagler T6 with eyeglasses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 12mm eye relief is generally considered too short for comfortable viewing with glasses. Observers with astigmatism can use this eyepiece without glasses by pairing it with a Tele Vue DIOPTRX corrector.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Nagler T6 5mm compare to the 5mm Delos?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 5mm Delos offers a more comfortable 20mm of eye relief and a slightly smaller 72° field of view. The Nagler T6 is smaller, lighter, and provides the iconic 82° \"spacewalk\" experience. If eye relief is your top priority, choose the Delos; if you want the widest possible field in a compact size, choose the Nagler.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this eyepiece work well in my fast f\/4.5 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Nagler design is well-corrected for fast telescopes. However, to get the sharpest possible stars across the entire 82° field in a very fast Newtonian, it is best used with a coma corrector like the Tele Vue Paracorr Type 2.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main trade-off with the Nagler T6 design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main trade-off for its compact size and wide 82° field is the modest 12mm of eye relief. This is a deliberate design choice to keep the eyepiece small and light, but it makes it less suitable for eyeglass wearers compared to other Tele Vue lines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU\u003c\/td\u003e\n\u003ctd\u003eTV-EN6-05.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e5mm\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\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e82°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNagler Type 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Elements\u003c\/td\u003e\n\u003ctd\u003e7\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.2 oz \/ 204 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e3.2 in \/ 81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e7.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTele Vue Nagler T6 5mm 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\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTop Dust Cap\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\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBottom Dust Cap\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\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Nagler_Type_6_5mm_Eyepiece_Manual.pdf\" target=\"_blank\"\u003e\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\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/tele-vue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTele Vue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51223879254301,"sku":"TV-EN6-05.0","price":533.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele_Vue_Nagler_T6_5mm_Eyepiece_1.jpg?v=1777515026","url":"https:\/\/davidastro.com\/products\/tele-vue-nagler-t6-5mm-82-degree-eyepiece","provider":"David Astro","version":"1.0","type":"link"}