{"title":"Ethos","description":"","products":[{"product_id":"21-0-ethos","title":"21.0 Ethos","description":"\u003cdiv\u003e\n\u003cp\u003eThe 21mm focal length completes the logical set of 21mm\/13mm\/8mm and nicely juxtaposes the 17mm\/10mm\/6mm combination. Each step within these two sets approaches a 3x field area gain. The 21mm's effective field stop diameter is 36.2mm, bringing its true field close to the 35mm Panoptic (38.7mm Field Stop diameter). In an f\/4 Dobsonian, the exit pupil is just 5.25mm using the 21mm Ethos instead of 8.75mm with a 35mm Panoptic.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-21.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e2.25 \/ 36.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e36.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374568866080,"sku":"ETH-21.0","price":1012.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_5c1191d9-fc88-49e4-aab6-3c9ca5831d7a.jpg?v=1774415253"},{"product_id":"17-0-ethos","title":"17.0 Ethos","description":"\u003cdiv\u003e\n\u003cp\u003eThe 17mm ETHOS is an ideal complement to the 31mm Nagler Type-5. They are parfocal (both have focus locations about 3\/8\" above shoulder) and the 31mm Nagler Type-5 has exactly twice the true field area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-17.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e1.55 \/ 24.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e29.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374568898848,"sku":"ETH-17.0","price":901.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_715e541b-dc93-4063-8337-e5ec4e87a1a6.jpg?v=1774415310"},{"product_id":"13-0-ethos","title":"13.0 Ethos","description":"\u003cp\u003eCompatible with Bino-viewers (62mm diameter), the Ethos 13mm eyepiece gives the most expansive views possible from a 1.25\" barrel.\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-13.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e1.30 \/ 20.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e22.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374568931616,"sku":"ETH-13.0","price":745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_249ecbc0-2a76-4a7b-9173-8795a4a7f5c3.jpg?v=1774415539"},{"product_id":"10-0-ethos","title":"10.0 Ethos","description":"\u003cp\u003eThe 10mm is parfocal with the 13mm ETHOS.\u003c\/p\u003e\n\u003cp\u003eIts 59mm rubber grip diameter makes this model usable in binocular viewers — for most people.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-10.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e1.10 \/ 17.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e17.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374568964384,"sku":"ETH-10.0","price":745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_4e4f7c46-9837-4642-92f7-d64fb9019792.jpg?v=1774415562"},{"product_id":"8-0-ethos","title":"8.0 Ethos","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eIn 1¼\" mode, if you use Tele Vue's HiHat 2\"-1¼\" adapter, it will be parfocal with Tele Vue's Plössls, DeLites, Type 6 Naglers, Nagler Zooms, 1¼\" Panoptics and 6mm ETHOS. Further, its light weight and small diameter makes the 8mm suitable for anyone using a binocular viewer. Another application is for spotting scope set-ups with the Tele Vue 60° 1¼\" diagonal.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-08.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e0.95 \/ 15.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e13.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374568997152,"sku":"ETH-08.0","price":700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_3508121b-1a1c-40db-9fef-ea075f0a3c9b.jpg?v=1774415669"},{"product_id":"6-0-ethos","title":"6.0 Ethos","description":"\u003cp\u003eIn 1¼\" mode, if you use Tele Vue's \"high-hat\" 2\"-1¼\" adapter, it will be parfocal with Tele Vue's Plössls, Radians, Type 6 Naglers, Nagler Zooms, 1¼\" Panoptics and 8mm ETHOS.\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-06.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e0.97 \/ 15.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e10.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374569029920,"sku":"ETH-06.0","price":700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_5c6b1652-d54b-4dc4-82fb-1c2355996833.jpg?v=1774415713"},{"product_id":"4-7-ethos-sx","title":"4.7 Ethos-SX","description":"\u003cp\u003eAl Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7mm focal length to reach 110°, the same field size as the LEM Simulator optics Al designed 45-years ago to train NASA astronauts for lunar landings.\u003c\/p\u003e\n\u003cp\u003eThe new 4.7mm Ethos-SX, like its 3.7mm progenitor, is designed and crafted to combine its exceedingly wide field of view with all the contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view.\u003c\/p\u003e\n\u003cp\u003eCompared to a lower power eyepiece with the equivalent TFOV (similar field stop) such as an 11mm Plössl (9.1mm field stop), the greater power - for higher resolution, and smaller exit pupil (for a darker background to enhance contrast) reveals a deep sky experience \"even better than you imagined\".\u003c\/p\u003e\n\u003cp\u003eThe 4.7mm is a 1¼\" format and is parfocal with the wide range of 1¼\" Tele Vue eyepieces. 2\" adapter included.\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-04.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e4.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e1.30 \/ 20.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e8.94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374569062688,"sku":"ETH-04.7","price":745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_6f87f088-12b1-4c9b-940e-74809bfc3a4f.jpg?v=1774415800"},{"product_id":"3-7-ethos-sx","title":"3.7 Ethos-SX","description":"\u003cp\u003eWith 110°, the Ethos-SX has 21% more AFOV area than the 100° Ethos design. This permits a nice 62% power increase from a 6mm Ethos, while retaining 68% of its TFOV. The 3.7mm actually has more TFOV than our 8mm Plössl, 6mm Radian, and 5mm Nagler Type-6!\u003c\/p\u003e\n\u003cp\u003eIn 1¼\" mode, it is parfocal with the wide range of 1¼\" Tele Vue Plössls, Panoptics, Radians, Naglers, Nagler Zooms, and 6mm and 8mm Ethos eyepieces. The screw-on 2\" adapter (included) is designed to make it parfocal with 13mm and 10mm Ethos when they are used in their 2\" modes.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003ctable class=\"prodSpecTblEP\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel #\u003c\/td\u003e\n\u003ctd\u003eETH-03.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length (mm)\u003c\/td\u003e\n\u003ctd\u003e3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size (in.)\u003c\/td\u003e\n\u003ctd\u003e2\" \u0026amp; 1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View (deg.)\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief (mm)\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (lb \/ oz)\u003c\/td\u003e\n\u003ctd\u003e1.10 \/ 17.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diam. (mm)\u003c\/td\u003e\n\u003ctd\u003e7.04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":51374569095456,"sku":"ETH-03.7","price":745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/image_8f2c5b10-051f-44f4-92ab-41635bffd9f7.jpg?v=1774415832"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/collections\/image_5c1191d9-fc88-49e4-aab6-3c9ca5831d7a.jpg?v=1774416197","url":"https:\/\/firstlightastro.com\/collections\/ethos.oembed","provider":"First Light Astro","version":"1.0","type":"link"}