XF12 Wide Angle 12.0mm Eyepiece for Pentax Spotting Scopes (& All Telescopes Which Accept 1.25" Eyepieces) with 60-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.
The XF lineup are less costly options which were designed for the PF-65ED and PF-65EDA midsized class of spotting scopes and their somewhat shorter focal length of 390mm. They can be used with any Pentax spotting scope, as well as with other telescopes which accept the standardized 1.25" eyepieces. The XF eyepieces meet the J.I.S. "Class 4" standard for waterproofing, described by the Japanese regulators as "water splashed against the enclosure from any direction shall have no harmful effects".
Key Features:
- Helicoid-type eyecup with four click-stop positions
- Parfocal with the XF 8.5 eyepiece, requiring no focus readjustments when exchanging the two
- Accepts 1.25" filters for astronomical & terrestrial applications