Pentax SMC-XW 1.25-Inch Eyepiece for Telescopes and Pentax Spotting Scopes (10mm)

70° Field of view for easier viewing Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm will give a wider field of view than typical eyepieces when used on Pentax spotting scopes or with most any telescope Fully multi-coated lenses increase light transmission and color quality High-refraction, low-dispersion lanthanum glass elements deliver bright, high-resolution images with Minimal aberrations and distortion Description 70° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi-Application Viewing Clear, Comfortable Viewing Assured by 70° Apparent Angle of View and 20mm Eye Relief All smc PENTAX XW-series eyepieces feature an extra-wide 70-degree apparent angle of view and an extra-long 20mm eye relief to deliver an exciting, wide-perspective image. High-Grade Optics for Exceptional Image Quality The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. It is