Original PENTAX eyepieces
The performance of a spotting scope can only be as good as the performance of the eyepieces used. That is why we offer a comprehensive range of eyepieces for many applications. With their functional, practical focal lengths, the XW eyepiece series offers a comprehensive range for all kinds of applications, from observing stars at low magnification to observing planets at high magnification. High-quality optics for exceptional image quality
The high-performance optics of the XW series consist of lanthanum glass elements with high refractive power and particularly low dispersion, which produce a balanced image with minimal aberrations. They have been specially developed to reduce the disturbing blackout effect by effectively compensating for the spherical aberration of the pupil.
PENTAX proprietary multi-coating for outstanding light transmission
All lens surfaces that come into contact with the air are treated with the original multi-layer coating, while all laminated surfaces are provided with the innovative partial coating. This achieves a light transmission of more than 90 per cent (96 per cent at 550 nm) in the visible spectral range.
Advanced light shielding technology for improved image contrast
Thanks to PENTAX's advanced composition simulation technology, the XW series has a light-shielding diaphragm in the most effective position to dramatically reduce internal reflections for a brighter, higher-contrast image.
Weatherproof construction for all-weather viewing
The XW series features a JIS Class 4* weatherproof design that allows use in drizzle or nighttime dew.
* The XW series eyepieces are not designed for underwater use and should not be sub-merged in water.
Universal connection mount
With the XW series, you have a choice of two mounting diameters: The 31.7 mm American standard version and the 50.8 mm (two inch) version. If you remove the screw-on eyecup, you get a screw thread with a diameter of 43 mm and a pitch of 0.75.
You can find more information about PENTAX Eyepieces following this link ...