XW40 Waterproof & Fogproof 40.0mm Eyepiece (2") with 70-Degree Apparent Field of View.
Pentax premium spotting scopes adhere to the general standard of 1.25" eyepiece thread diameter, facilitating the use of eyepieces from independent manufacturers. That also means, of course, that the wide range of Pentax eyepieces can be used in other telescopes and spotting scopes which accept 1.25" eyepieces
Pentax eyepieces are a reknowned world-wide amongst serious amateur and professional astronomers as some of the best that there are.
The XW line represents an even further improvement upon the venerable XL series. The apparent field of view has been expanded to a whopping 70°, but remarkably this was achieved without reducing their impressive eye relief of 20mm. There are eyepieces available with wider apparent viewing fields, but to take advantage of that wider field you'll have to be much closer to the eyepiece. This isn't exactly conducive to extended observing sessions.
Key Features:
- Continuous helicoid eyecup design gives perfect eye relief for all
- Accepts 2.00" filters for astronomical applications