Pentax SMC XW 23mm Eyepiece for Spotting Scopes and Astronomical Telescopes (2")

Angle of View and Eye Relief: The 85-degree apparent angle of view and 20mm eye relief deliver an exciting wide-perspective image High-Grade Optics: The high-performance XW 23 optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations Multi-Layer Coating: All lens surfaces that come in contact with air are treated with the Pentax-original multi-layer coating to deliver outstanding light transmission efficiency Advanced Light-Shielding Technology: The XW 23 features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image Weatherproof Construction: The XW 23 features JIS Class 4 weatherproof construction, making it possible to use it in drizzle or under night dewYou may also like OUNONA 4Pcs Black Telescope Eyepiece Replacement Soft Rubber Eye Cup Lens Shield for Optics.