{"product_id":"tele-vue-13mm-nagler-type-6-eyepiece-1-25-pre-owned","title":"Tele Vue 13mm Nagler Type 6 Eyepiece - 1.25\" - (Pre-owned)","description":"\u003cp\u003e\u003cspan style=\"color: rgb(248, 13, 13);\"\u003e\u003cstrong\u003eIn excellent condition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the TeleVue 13mm Nagler Type 6 Eyepiece - 1.25\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe 7-element, \u003cb\u003eTeleVue 13mm Nagler Type 6\u003c\/b\u003e design is based on the original patented Nagler design. This new 7-element \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e design update for the short focal length Nagler deserves its own designation. Using different exotic materials, coating processes and design ingenuity, Al has massaged more eye-relief, contrast, and true field of view into the shorter focal length Naglers, while maintaining the absolute sharpness of the originals. Eye-relief is 12mm on each \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e model, and all are sized about the same as the original 7mm! Weight about 0.4 to 0.5 lbs.\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\"\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 through the \u003cb\u003eTeleVue 13mm Nagler Type 6\u003c\/b\u003e. Blackened lens edges, anti-reflection threads and rubber eyeguards deliver maximum contrast. Adapter skirts for 2\" focusers on larger 1.25\" models and rubber grip rings are additional Tele Vue \"firsts\". Even 2\"\/1.25\" barrel \u003ca href=\"http:\/\/khanscope.com\/accessDetails.cfm?productID=5224\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e 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\"\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\"\u003eTeleVue Telescope Eyepiece\u003c\/a\u003e.\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\"\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\"\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\"\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\"\u003eTeleVue Telescopes\u003c\/a\u003e, \u003ca href=\"http:\/\/www.khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=13\"\u003eTeleVue Telescope Mounts\u003c\/a\u003e and \u003ca href=\"http:\/\/www.khanscope.com\/accessList.cfm?catID=3\u0026amp;subcatID=15\"\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 13mm Nagler Type 6 Eyepiece - 1.25\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Type-6 models feature about 12mm 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\u003eParfocal and great with the Bino Vue\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 13mm Nagler Type 6 Eyepiece - 1.25\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFocal Length (mm): 13\u003c\/p\u003e\n\u003cp\u003eBarrel Size (in.): 1.25\"\u003c\/p\u003e\n\u003cp\u003eApparent Field of View (deg.): 82\u003c\/p\u003e\n\u003cp\u003eEye Relief (mm): 12\u003c\/p\u003e\n\u003cp\u003eWeight (lb \/ oz): 0.40 \/ 6.4\u003c\/p\u003e\n\u003cp\u003eField Stop (mm): 17.6\u003c\/p\u003e\n\u003cp\u003eWarranty: Limited Lifetime\u003c\/p\u003e\n\u003cp\u003eTeleVue Product Number: EN6-13.0\u003c\/p\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":43242941382769,"sku":"USED051404","price":425.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EP_EN6-13.0.jpg?v=1778781859","url":"https:\/\/khanscope.com\/products\/tele-vue-13mm-nagler-type-6-eyepiece-1-25-pre-owned","provider":"Khan Scope Centre","version":"1.0","type":"link"}