All Pentax eyepieces are constructed with a high-refraction, low-dispersion lanthanum glass that consistently delivers bright, high-resolution images with minimal distortion. In addition, all XW series eyepieces are built to JIS Class 4 a weather-proof standard which increases their durability in less than ideal conditions. Designed for use with PENTAX brand spotting scopes and with astronomical telescopes with appropriate 1 1/4" or 2" focusers.
Compatible with the following: PF-65 and PF-65ED(A)II series spotting scopes, PF-80 series spotting scopes, PF-100 series spotting scopes.
High-performance eyepieces for use with high-grade spotting scope
smc PENTAX XW series - 70° or 85° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi-Application Viewing:
Long-focal-length eyepieces, ideal for nebula and star cluster observations
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 particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.
PENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency:
All lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum.
Advanced Light-Shielding Technology for Improved Image Contrast:
Thanks to PENTAX’s advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.
Comprehensive Lineup to Accommodate All Applications:
Featuring functional, practical focal lengths, the XW eyepiece series provides a comprehensive lineup that accommodates all types of applications, from low-magnification viewing of stars to high-magnification observation of planets.
Weatherproof Construction for All-Weather Viewing:
The XW series features JIS Class 4 weatherproof construction,* making it possible to use it in drizzle or under night dew.
* The XW-series eyepieces are not designed for underwater use and should not be submerged under water.
Sleeve Size and Eyecup Design:
The XW series provides a choice of two installment diameters: American-standard 1.5" version, and 2" version. When you remove the screw-on eyecup, it also provides a screw thread with a 43mm diameter and a 0.75 pitch.
Figures in parentheses are the distance from the viewing rubber
|Apparent Angle of View||70°|
|Weatherproof||JIS class 4 equivalent
|Diameter & Length (minimum)||120 x 61mm|
|Weight (+/- 5%)||390g|
|Accessories||Eyepiece lens cap,
Objective lens cap
*Partial coating applied to laminated optical element groups