Pentax SMC XF 12mm Eyepiece :
Pentax eyepieces are a near consensus choice amongst serious amateur and
professional astronomers that facilitates the use of eyepieces from independent
manufacturers with standard of 1.25" eyepiece thread diameter. Pentax eyepieces can
be used in other telescopes and spotting scopes which accept 1.25" eyepieces.
The eye piece is made from 8 lens elements in 4 groups and fully blacked inside to
minimize internal reflections. The optical elements are ED-glass elements that
include Lanthanum glass, to minimize chromatic aberration and maximize well-
balanced transmission. Maximum usability and viewing comfort is offered with 70°
apparent angle of view. Eye relief at a comfortable 18mm, also eyewear users can
have a comfortable view. Twist-up rubber eyecup provides comfortable viewing.
The XF eyepieces are 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".
Pentax SMC XF 12mm Eyepiece is available at Microglobe at discounted price.
Microglobe is largest online sport optics store of the UK.
Pentax SMC XF 12mm Eyepiece
Features - Pentax
SMC XF 12mm Eyepiece
Fully blacked inside to minimize internal
Helicoid-type eyecup with four detented
Also can be use with astronomical
telescopes with 1 1/4" focuser
Accepts 1.25" diameter filters for
astronomical and terrestrial applications
JIS class 4 weatherproof construction make
these eyepieces more durable and water resistant