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.
|Focal length (mm)||30|
|Apparent field of view (°)||70|
|Eye relief (mm)||20|
|Number of lenses||7|
|Number of groups||6|
|Connection (to the telescope)||2"|
|Connector (at camera end)||M48|
|Coating of optical system||FMC|
|Adjustable eyepiece cup||yes (rotatable)|
|Optional camera adaptor||yes|
|inert gas charge||no|
|Type of build||SWA|