Clear, comfortable viewing assured by 85° or 70° apparent angle of view and 20mm eye relief
85-degree apparent angle of view eyepieces, XW23 and XW16.5 is newly added to the smc PENTAX XW-series line up featuring an extra -wide 70-degree apparent angle of view with an extra-long 20mm eye relief to deliver an exciting wide-perspective image.
Long-focal-length eyepieces, ideal for nebula and star cluster observations
Thanks to their long-focal-length design, the XW40-R and XW30-R eye-pieces will let you observe large celestial bodies spreading across the night sky, such as the Pleiades star cluster and the Andromeda Galaxy, in their entirely.*
* When mounted on an astronomical telescope with a focal length of 10000mm.
High-grade optics for exceptional image quality
PENTAX-original multi-layer coating for outstanding light transmission efficiency
Advanced light-shielding technology for improved image contrast
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 as choice of two installment diameters: American-standard 31.7mm version, and 50.8mm (two-inch) version. When you remove the screw-on eyecup. it also provides a screw thread with a 43mm diameter and a 0.75 pitch.
Comprehensive lineup to accommodate all applications
Featuring functional, practical focal lengths, the XW eyepieces series provides a comprehensive lineup that accommodates all types of applications, from low-magnification viewing of stars to high-magnification observation of planets.