Description 80 degree extreme wide angle eyepiece – See more. Immerse yourself into the scene with a 40x magnification and a field of view of 39m (TSN-99) or with a 35x magnification and a field of view of 45m (TSN-88/880/770) at 1000m distance. Find a subject quicker with a wider view of your surroundings. 40x fixed magnification (TSN-99 PROMINAR SERIES) 35x fixed magnification (TSN-88 / 880 / 770 PROMINAR SERIES) A true optical innovation. Kowa engineers have developed one of the most immersive visual experiences you can expect to see in a sporting optic device. Featuring an advanced optical design, the view through Kowa TE-80XW Extreme wide angle eyepiece can only be described as breath-taking. Incorporating a field flattener and XD lens to produce a view that is completely uniform and ultra sharp across the entire image and virtually zero chromatic aberration. Compatible with Kowa TSN-99 / TSN-88 / TSN-880 / TSN-770 series spotting scopes Fully waterproof and sealed against the elements. Additional KR coating applied to the lens to actively reduce the build up of dust, dirt and other particles. 100% compatible with Kowa SYSTEM accessories including the TSN-EX16 1.6x extender for magnification up to 64x when paired with TSN-99 series and 56x with TSN 88/880/770 series. Technical Details Eye Relief: 17.0mm Magnification: 40x (99 Series) 35x (880/770 Series) Field of view (degree): 80 Exit Pupil Diameter: 2.5 (99/880 series) 2.2 (770 series) Relative Brightness: 6.3 (99/880 series) 4.8 (770 series) Field of view at 1000m: 39m (99 series) 45m (880/770 series) Twilight Factor: 59.3 (99 series) 55.5 (880 series) 51.9 (770 series)
