Pentax SMC XW-Revival Eyepieces
Pentax re-launched two popular eyepiece models: XW-30 and XW-40.
The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.
These new eyepieces are compatible with existing Telescope with a Sleeve Size of 50.8mm (2"), however, please note that the eyepieces are not compatible with Pentax Spotting Scopes (standard Sleeve Size of 31.7mm).
|Focal length (mm)||40|
|Apparent field of view (°)||70|
|Eye relief (mm)||20|
|Number of lenses||6|
|Number of groups||5|
|Connection (to the telescope)||2"|
|Connector (at camera end)||M48|
|Coating of optical system||FMC|
|Field stop (mm)||46,5|
|Adjustable eyepiece cup||yes (rotatable)|
|Optional camera adaptor||yes|
|inert gas charge||no|
|Type of build||SWA|