£379.00
| /
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.
Main Features:
Capacity |
|
| 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 |
| Transmission | 96 (550nm) |
Special features |
|
| Adjustable eyepiece cup | yes (rotatable) |
| Optional camera adaptor | yes |
| Filter thread | yes |
| inert gas charge | no |
General |
|
| Type | Eyepiece |
| Type of build | SWA |
| Series | XW |
| Weight (g) | 740 |
| Length (mm) | 123 |
| Diameter (mm) | 76 |