{"product_id":"tele-vue-panoptic-41mm-68-eyepiece","title":"Tele Vue Panoptic 41mm 68° Eyepiece - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e41mm Focal Length\u003c\/li\u003e\n\u003cli\u003e68° Apparent Field of View\u003c\/li\u003e\n\u003cli\u003e2\" Diameter Barrel\u003c\/li\u003e\n\u003cli\u003e27mm Eye Relief\u003c\/li\u003e\n\u003cli\u003e46mm 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 Panoptic 41mm 68° Eyepiece - 2\"\u003c\/h2\u003e\n      \u003cp\u003eThe Tele Vue Panoptic 41mm represents the physical limit of the 2-inch barrel format, delivering a massive 46mm field stop for expansive, low-power vistas. Designed for long-focal length instruments, it frames entire star complexes like the North American Nebula (NGC 7000) with a dark sky background and high image contrast. This six-element optic balances a wide 68° field with long eye relief, making it the primary choice for deep-sky scanning and large-scale celestial framing.\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\u003e46mm Field Stop and Wide-Field Navigation\u003c\/h3\u003e\n      \u003cp\u003eBy utilizing every millimeter of the 2-inch barrel's inner diameter, this eyepiece provides the maximum possible true field of view before vignetting occurs. In a 2000mm focal length SCT, it produces 49x magnification and a 1.3° field, allowing the Hercules Cluster (M13) to be centered with significant surrounding context for a balanced, natural perspective. The optical geometry is calculated to maintain pinpoint stars across the entire 68° span, preventing the edge-of-field astigmatism common in simpler wide-angle designs.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAstigmatism Control:\u003c\/strong\u003e The sophisticated lens grouping tends to flatten the field in f\/7 and slower refractors, ensuring stars do not \"smear\" near the field stop.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003e27mm Eye Relief:\u003c\/strong\u003e This generous distance allows observers to see the entire field stop comfortably while wearing eyeglasses, avoiding the need to \"peek\" around the edges.\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\u003eHandling and Ergonomics\u003c\/h3\u003e\n      \u003cp\u003eThe 41mm Panoptic features a scalloped rubber grip that remains secure even with gloves, making it easy to handle during cold observing sessions. The adjustable screw-type eyeguard allows you to set a fixed eye position, effectively locking in the full 27mm eye relief and eliminating guesswork. Its solid, well-balanced housing provides confidence when swapping eyepieces, especially on heavier 2-inch diagonals where stability matters.\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\u003eOperational Comparison and Balance\u003c\/h3\u003e\n      \u003cp\u003eThe 41mm Panoptic is often compared to higher-magnification wide-fields or longer-focal length Plössls, each presenting specific mechanical trade-offs.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 31mm Nagler:\u003c\/strong\u003e While the 31mm offers an 82° field, the 41mm Panoptic weighs only 2.1 lbs, reducing the need for re-balancing counterweights on smaller EQ mounts when switching eyepieces.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003evs. Tele Vue 55mm Plössl:\u003c\/strong\u003e Both capture the same 46mm true field, but the 41mm Panoptic increases magnification by 34%, which darkens the sky background to reveal fainter nebulosity in light-polluted areas.\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\"\u003eWill the Tele Vue Panoptic 41mm work with my f\/4.5 Newtonian?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIn an f\/4.5 system, the 41mm Panoptic produces a 9.1mm exit pupil, which likely exceeds the observer's pupil diameter and results in wasted light; furthermore, the secondary mirror shadow may become visible as a dark spot in the center of the field.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I wear eyeglasses while using the Tele Vue Panoptic 41mm?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the 27mm eye relief is ample for observers wearing thick glasses to correct for astigmatism, and the adjustable rubber eyeguard can be positioned to maintain the correct eye distance.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I prevent blackouts or kidney-beaning with this eyepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe long eye relief of the Tele Vue Panoptic 41mm requires precise eye positioning; using the adjustable eyeguard or a Tele Vue Eyeguard Extender helps lock in the optimal head position for a stable view.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Tele Vue Panoptic 41mm show more sky than the 55mm Plössl?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, both eyepieces share the same 46mm field stop, which is the physical limit of the 2-inch barrel format, meaning they capture the same true field of view despite different magnifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Tele Vue Panoptic 41mm compatible with Dioptrx?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, like most long eye relief Tele Vue eyepieces, the 41mm Panoptic is compatible with Dioptrx astigmatism correctors, allowing for sharp views without wearing eyeglasses.\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\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eEPO-41.0\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e41 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e68°\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e27 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e46 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e33.1 oz (2.07 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-Panoptic-41mm-Eyepiece-1.jpg?v=1776304716\" alt=\"Tele Vue Panoptic 41mm Eyepiece\" class=\"DAV-img-box\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003e41mm Panoptic 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 src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TeleVue-2inch-Dustcap.jpg\" alt=\"Tele Vue 2-inch Dust Cap\" class=\"DAV-img-box\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\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-41mm-Panoptic-Eyepiece-Manual.pdf?v=1776305956\" 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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/televue-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eTeleVue 5-Year Limited Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51174980845853,"sku":"TV-EPN-41.0","price":915.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Tele-Vue-Panoptic-41mm-Eyepiece-1.jpg?v=1776304716","url":"https:\/\/davidastro.com\/fr\/products\/tele-vue-panoptic-41mm-68-eyepiece","provider":"David Astro","version":"1.0","type":"link"}