{"product_id":"kowa-te-80xw-extreme-wide-angle-eyepiece","title":"Kowa TE-80XW Extreme Wide Angle Eyepiece","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFixed 40x magnification on TSN-99 series scopes\u003c\/li\u003e\n\u003cli\u003eFixed 35x magnification on TSN-88, TSN-77, and TSN-66 series scopes\u003c\/li\u003e\n\u003cli\u003eField of view of 147.6 ft at 1,000 yards on TSN-88 and TSN-66\u003c\/li\u003e\n\u003cli\u003e17mm eye relief\u003c\/li\u003e\n\u003cli\u003eXD and Field Flattener lens elements\u003c\/li\u003e\n\u003cli\u003eTwist-up eyecup\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\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\u003eKowa TE-80XW Extreme Wide Angle Eyepiece\u003c\/h2\u003e\n\u003cp\u003eThe Kowa TE-80XW Extreme Wide Angle Eyepiece delivers a fixed 40x magnification on Kowa's 99mm TSN-99 PROMINAR scopes and a fixed 35x on the TSN-88, TSN-77, and TSN-66 series bodies. Kowa lists 17mm of eye relief and a field of view of 147.6 feet at 1,000 yards on the TSN-88 and TSN-66. It uses XD and field flattener lenses, which Kowa says deliver true color, sharp images and a wide field.\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\u003eKowa TE-80XW: A 40x\/35x Eyepiece for PROMINAR Scopes\u003c\/h3\u003e\n\u003cp\u003eThe TE-80XW is a wide angle, fixed-magnification eyepiece that Kowa lists for the TSN-99, TSN-88, TSN-77 and TSN-66 series of spotting scopes.\u003c\/p\u003e\n\u003cp\u003eThe magnification is determined by the focal length of the scope body it's attached to. This single eyepiece gives two magnifications depending on the scope series.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn TSN-99 Series:\u003c\/strong\u003e 40x, field of view 121 ft (Kowa's TSN-99 table labels this figure 'at 1,000 ft'), eye relief 17 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn TSN-88, TSN-77, \u0026amp; TSN-66 Series:\u003c\/strong\u003e 35x; on TSN-88 and TSN-66, 147.6 ft at 1,000 yds and 17 mm eye relief (Kowa gives no TSN-77 field figure).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 147.6 ft Field of View with 17mm of Eye Relief\u003c\/h3\u003e\n\u003cp\u003eOn TSN-88 and TSN-66 series scopes, Kowa lists a 147.6-foot field of view at 1,000 yards at 35x, which makes it easier to scan broad landscapes or follow moving subjects. On the TSN-99, Kowa lists 121 ft (Kowa's TSN-99 table labels this figure 'at 1,000 ft') at 40x.\u003c\/p\u003e\n\u003cp\u003eKowa lists 17mm of eye relief and describes it as generous eye relief via the twist-up eyecup. Kowa makes no specific eyeglass-wearer claim for this eyepiece.\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\u003eXD and Field Flattener Lenses for Edge-to-Edge Clarity\u003c\/h3\u003e\n\u003cp\u003eThe TE-80XW uses XD (extra-low dispersion) lenses and field flattener lenses, which Kowa says deliver true color, sharp images and a wide field. Extra-low dispersion glass reduces chromatic aberration (color fringing).\u003c\/p\u003e\n\u003cp\u003eA field flattener reduces field curvature, which otherwise makes detail near the edge of a wide field look soft. Kowa states nothing further about the coatings or lens layout of the TE-80XW.\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\u003eAchieving Vignette-Free Telephoto Images for Digiscoping\u003c\/h3\u003e\n\u003cp\u003eKowa calls the TE-80XW a digiscoper's dream and says it gives vignette-free images, meaning no dark corners in the photo.\u003c\/p\u003e\n\u003cp\u003eThe TSN-99, TSN-88 and TSN-66 bodies have an adapter accessory collar for Kowa digiscoping adapters, which Kowa says turns the scope into a super telephoto lens system. Kowa does not name a specific adapter for this eyepiece in its material.\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\u003eTE-80XW vs. TE-11WZ II: Choosing Between Fixed Power and Zoom\u003c\/h3\u003e\n\u003cp\u003eYour choice between the TE-80XW and Kowa's TE-11WZ II wide-angle zoom eyepiece depends on your primary use case. The TE-80XW gives a single magnification with a wider field; the TE-11WZ II lets you change magnification, from 30-70x on a TSN-99 or 25-60x on a TSN-88 or TSN-66.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the TE-80XW for:\u003c\/strong\u003e a wider fixed view (147.6 ft at 1,000 yds at 35x on TSN-88\/66) and vignette-free digiscoping images, per Kowa. It weighs 1.06 lb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the TE-11WZ II for:\u003c\/strong\u003e Versatility in the field. You can zoom out to find a subject and then zoom in to study fine details. On TSN-88\/66 its field is 138 ft at 25x down to 75 ft at 60x. It weighs 0.80 lb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFitting the Eyepiece and Using the Twist-Up Eyecup\u003c\/h3\u003e\n\u003cp\u003eThe TSN-99, TSN-88 and TSN-66 bodies have an eyepiece release button, which you press to remove the eyepiece. Kowa's material gives no step by step fitting procedure for this eyepiece: follow the instruction manual of your spotting scope.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a twist-up eyecup: twist it up or down to set your eye at the right distance from the lens. Kowa does not describe eyecup stops or give eyeglass-wearer advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Kowa spotting scopes are compatible with the TE-80XW eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa lists the TE-80XW for the \u003cstrong\u003eTSN-99\u003c\/strong\u003e, \u003cstrong\u003eTSN-88\u003c\/strong\u003e, \u003cstrong\u003eTSN-77\u003c\/strong\u003e and \u003cstrong\u003eTSN-66\u003c\/strong\u003e series spotting scopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat magnification does the TE-80XW provide on a Kowa TSN-99 PROMINAR scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn the Kowa TSN-99 series, the TE-80XW provides a fixed magnification of \u003cstrong\u003e40x\u003c\/strong\u003e. Kowa's TSN-99 table lists its field of view as 121 ft (labelled 'at 1,000 ft') and its eye relief as 17 mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat magnification will I get with the TE-80XW on a Kowa TSN-88 or TSN-66 scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn the Kowa TSN-88, TSN-77, and TSN-66 series scopes, the TE-80XW provides a fixed magnification of \u003cstrong\u003e35x\u003c\/strong\u003e. On the TSN-88 and TSN-66, this yields a field of view of 147.6 feet at 1,000 yards.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat eye relief does the Kowa TE-80XW have?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa lists \u003cstrong\u003e17mm of eye relief\u003c\/strong\u003e and describes it as generous eye relief via the \u003cstrong\u003etwist-up eyecup\u003c\/strong\u003e. Kowa makes no specific eyeglass-wearer claim for this eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Kowa TE-80XW for digiscoping?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Kowa calls the TE-80XW a digiscoper's dream and says it gives \u003cstrong\u003evignette-free images\u003c\/strong\u003e. The TSN-99, TSN-88 and TSN-66 bodies have an accessory collar for Kowa digiscoping adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Kowa TE-80XW fit my TSN-82SV spotting scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa lists the TE-80XW only for the TSN-99, TSN-88, TSN-77 and TSN-66 series. For the TSN-82SV, Kowa lists the TE-9Z, TE-14WD and TE-17HD eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach and remove the TE-80XW eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe TSN-99, TSN-88 and TSN-66 bodies have an \u003cstrong\u003eeyepiece release button\u003c\/strong\u003e used to remove the eyepiece. Kowa's material gives no step by step procedure for this eyepiece, so follow your scope's instruction manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the TE-80XW and a zoom eyepiece like the TE-11WZ II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA fixed eyepiece gives one magnification. Kowa's figures show the TE-80XW's field is wider than the TE-11WZ II zoom's widest setting on the same body (147.6 ft at 35x against 138 ft at 25x, at 1,000 yds on TSN-88\/66), and Kowa says it gives vignette-free digiscoping images. A zoom lets you change magnification without swapping eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"XD Lens\" in the Kowa TE-80XW eyepiece do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eXD refers to \u003cstrong\u003eextra-low dispersion\u003c\/strong\u003e glass, which reduces chromatic aberration (color fringing). Kowa says the TE-80XW's XD and field flattener lenses deliver true color, sharp images and a wide field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow should I use the twist-up eyecup on the TE-80XW?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTwist the eyecup up or down to set your eye at the distance where you see the full field. Kowa describes the eyepiece as having generous eye relief (17 mm) via the twist-up eyecup and gives no further eyecup instructions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Kowa Limited Lifetime Warranty cover for the TE-80XW?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Kowa Limited Lifetime Warranty covers the TE-80XW for defects in materials and workmanship for the lifetime of the product to the original owner, when purchased from an authorized North American Kowa retailer. It does not cover damage from unauthorized repair, alteration, abuse, misuse, or normal wear and tear. Kowa requests product registration within 30 days of purchase.\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\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e879110001173\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eExtreme wide angle fixed eyepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible with\u003c\/td\u003e\n\u003ctd\u003eKowa TSN-99, TSN-88 and TSN-66 PROMINAR spotting scopes (also TSN-77)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification on TSN-99\u003c\/td\u003e\n\u003ctd\u003e40x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification on TSN-88 and TSN-66\u003c\/td\u003e\n\u003ctd\u003e35x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField of view at 1,000 yd on TSN-88 and TSN-66\u003c\/td\u003e\n\u003ctd\u003e147.6 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye relief\u003c\/td\u003e\n\u003ctd\u003e17 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLenses\u003c\/td\u003e\n\u003ctd\u003eXD and field flattener lenses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyecup\u003c\/td\u003e\n\u003ctd\u003eTwist-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.06 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eKowa Limited Lifetime Warranty to the original owner (authorized North American retailer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/kowa-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eKowa Limited Lifetime Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kowa","offers":[{"title":"Default Title","offer_id":67954385125661,"sku":"KOW-TE-80XW","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/kowa-te-80xw-extreme-wide-angle-eyepiece-1_b2cba70a-0c5b-4923-969c-f4725ad46aa6.jpg?v=1793723872","url":"https:\/\/davidastro.com\/en-us\/products\/kowa-te-80xw-extreme-wide-angle-eyepiece","provider":"David Astro","version":"1.0","type":"link"}