Cheap but optically very good, the SkyWatcher zoom eyepiece is a great "all around" eyepiece that provides very interesting performances especially considering the very low price!
You can gradually adjust the focal length from 7 to 21mm while the apparent field varies from 60° to 40°. This zoom eyepiece has a diameter of 31.8mm and the barrel is threaded to accept 31,8mm filters.
Type | Zoom |
---|---|
Diameter (mm) | 31,8mm |
Apparent field of view | da 40° a 60° |
Eye Relief (mm) | No |
Optical Coatings | Fully Multi Coated |
Focal lenght (mm) | da 7 a 21mm |