Eyepiece Pentax XW 20mm 1,25"

Ocular PentaxXW 20mm 1.25" XW 20mm 1.25

Eyepieces Pentax Eyepieces
high-performance wide-angle for use with high-quality telescopes.

XW Series

• Clear and comfortable vision ensured by a 70° apparent viewing angle and 20 mm eye relief.
  All PENTAX XW smc series eyepieces feature an extra-wide apparent viewing angle of 70 degrees and an extra-long eyepiece relief of 20 mm to provide an exciting, wide-perspective image.
• High-grade optics for exceptional image quality.
  The high-performance optics of the XW series incorporate ultra-low dispersion, high-refractive lanthanum glass elements to produce a well-balanced image with minimal aberrations.It is specially designed to reduce the annoying blackout effect by effectively compensating for spherical aberration of the pupil.
• PENTAX original multi-layer coating for excellent light transmission efficiency.
  All lens surfaces that come in contact with air are treated with the original multilayer coating, while all laminated surfaces are treated with the innovative partial coating to provide a light transmission efficiency of more than 90% (an astounding 96% at 550 nm) over the visible light spectrum.
• Advanced light-shielding technology to enhance image contrast.
  Thanks to PENTAX's advanced computer simulation technology, the XW series features a light-shielding diaphragm in the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image.
• A choice of four magnifications to meet specific applications.
  With four different magnifications (7 mm, 10 mm, 14 mm and 20 mm) to choose from, the XW series suits a wide range of both casual and specialized applications.
• Weather-resistant construction for all-weather viewing.
  The XW series features a JIS Class 4* weatherproof construction, allowing it to be used in drizzle or under night dew.
  * The XW series eyepieces are not designed for underwater use and should not be submerged underwater.
• The XW3.5 and XW5 models are designed exclusively for astronomical observations.
  The XW series features a wide apparent viewing angle (70 degrees), JIS Class 4 weatherproof construction and long eye relief (20 mm).The optics, incorporating low-dispersion, high-refractive lanthanum glass elements and a PENTAX-original multi-coating, deliver bright, high-resolution images with minimal aberrations and distortions.

Specifications:

Capacity
Focal length (mm)
Apparent field of view (°)
Eye relief (mm)
Number of lenses
Number of groups
Connection (to telescope)	1,25"
Connector (at camera end)	M43
Coating of the optical system	multiple
Field stop (mm)
Transmission	96 (550 nm)
Special features
Adjustable eyecup	yes (rotating)
Optional camera adapter	yes
Filter thread	yes
inert gas charge	no
General
Type	Ocular
type of construction	SWA
Series	XW
Weight (grams)	355
Length (mm)	86
Diameter (mm)