Kowa Eyepieces For TSN 820 Scopes

The Kowa TSE-21WE 21x Wide Angle Eyepiece for Kowa TSN-820M series Spotting Scope is one of the optional eyepieces designed to be used with your Kowa TSN-821M, TSN-822M, TSN-823M, or TSN-824M spotting scope. Fully multi-coated optics provide a clear view, sharp image, and less distortion, while longer eye-relief than current eyepiece models allows eyeglass wearers to easily see the entire image. This unit has twist-up eyecups that can be set at different heights, allowing you to find the ideal viewing position, and that can be removed for use with digital cameras or for cleaning. This unit is easy to install, requiring you to simply push in the eyepiece, and then pull it out again for detachment. The TSN-21WE features a real field of view of 3.1 degrees, an apparent field of view of 65.1 degrees, and a relative brightness of 15.2. This interchangeable eyepiece has an exit pupil diameter of 3.9 millimeters, with an eye relief of 20 millimeters.