{"product_id":"22mm-nagler-type-4-eyepiece-2-en4-22-0","title":"Tele Vue 22mm Nagler Type 4 Eyepiece - 2\" - EN4-22.0","description":"\n\u003ccenter\u003e\n\u003ch2\u003eAbout the TeleVue 22mm Nagler Type 4 Eyepiece - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eApplying the experience of the \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e Radian development to the 82 degree Nagler series, yielded more contrast, reduced pincushion, more true field, and longer eye-relief. With added eye-relief, the click-stop Instadjust eyeguard incorporated into the \u003cb\u003eTeleVue 22mm Nagler Type 4 Eyepiece\u003c\/b\u003e helps maintain proper eye distance and centration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCompare a penny to a half dollar to see the relative size between a 50 degree and 82 degree apparent field - almost 3 times the area difference! And while other \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003etelescope eyepieces\u003c\/a\u003e boast of impressive apparent field sizes, Tele Vue''s philosophy of \"showing no field unless it''s fine\" stresses full field image quality as the ingredient for impressive views. Blackened lens edges, anti-reflection threads and rubber eyeguards deliver maximum contrast. Adapter skirts for 2\" focusers on larger 1.25\" \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e models and rubber grip rings are additional Tele Vue \"firsts\". Even 2\"\/1.25\" barrel models have an additional feature allowing the 2\" extension tube (EBX-2120) to be screwed on, which permits use of 2\" \u003ca href=\"http:\/\/www.khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=10\" target=\"blank\"\u003eTeleVue Eyepiece Filters\u003c\/a\u003e as well as 1.25\". 100% full field visual inspection on TeleVue''s own flat-field test instruments guarantees the performance of every \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e Type-4 models feature about 18mm of eye relief and with the \"instajust\" eyeguard are best for eyeglass wearers or \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Dioptrx\u003c\/a\u003e users in their 22, 17, 12mm focal length range.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ci\u003e\"You may know there''s a long history of naming \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003etelescope eyepieces\u003c\/a\u003e after their designers: Kellner, Erfle and Plossl, to name a few. In the late 70''s I designed an eyepiece sufficiently radical that I dared attach my name to it. Even today, I must admit a little discomfort when talking about \"Nagler\" eyepieces. \u003c\/i\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\" target=\"blank\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e \"Naglers\", my aim is to approach the wide angle perspective of naked eye vision, while maintaining the highest degree of sharpness, contrast, and viewing comfort. The goal is to allow the \u003ca href=\"http:\/\/khanscope.com\/newEquipCart.cfm?catID=1\u0026amp;subcatID=1\" target=\"blank\"\u003etelescope\u003c\/a\u003e to virtually \"disappear,\" leaving the impact of \"spacewalk\" viewing.\" --Al Nagler\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBe sure to check out our line of \u003ca href=\"http:\/\/khanscope.com\/newEquipList.cfm?catID=1\u0026amp;subCatID=1\u0026amp;manID=7\" target=\"blank\"\u003eTeleVue Telescopes\u003c\/a\u003e, \u003ca href=\"http:\/\/www.khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=13\" target=\"blank\"\u003eTeleVue Telescope Mounts\u003c\/a\u003e and \u003ca href=\"http:\/\/www.khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=15\" target=\"blank\"\u003eTeleVue Telescope Accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eTeleVue 22mm Nagler Type 4 Eyepiece - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Type-4 models feature about 18mm of eye relief\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eYields more contrast, reduced pincushion, more true field, and longer eye-relief\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlackened lens edges, anti-reflection threads and rubber eyeguards deliver maximum contrast\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdapter skirts for 2\" focusers on larger 1.25\" models and rubber grip rings\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eClick-stop Instadjust eyeguard helps maintain proper eye distance and centration\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlat-field test instruments guarantees the performance of every Tele Vue eyepiece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eTeleVue 22mm Nagler Type 4 Eyepiece - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFocal Length (mm): 22\u003c\/p\u003e\n\u003cp\u003eBarrel Size (in.): 2\"\u003c\/p\u003e\n\u003cp\u003eApparent Field of View (deg.): 82\u003c\/p\u003e\n\u003cp\u003eEye Relief (mm): 19\u003c\/p\u003e\n\u003cp\u003eWeight (lb \/ oz): 1.50 \/ 24.0\u003c\/p\u003e\n\u003cp\u003eField Stop (mm): 31.1\u003c\/p\u003e\n\u003cp\u003eWarranty: Limited Lifetime\u003c\/p\u003e\nTeleVue Product Number: EN4-22.0","brand":"TeleVue","offers":[{"title":"Default","offer_id":10552419649,"sku":"TEL-EN4-22.0","price":497.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/EP_EN4-22.0.jpeg?v=1776459263","url":"https:\/\/khanscope.com\/en-fr\/products\/22mm-nagler-type-4-eyepiece-2-en4-22-0","provider":"Khan Scope Centre","version":"1.0","type":"link"}