Eyepiece · MSRP $130
William Optics SWAN 40mm 2" Eyepiece
Key specifications
| Focal length | 40 mm |
|---|---|
| Apparent FOV | 72 ° |
| Barrel size | 2" |
| Eye relief | 28 mm |
| Weight | 0.57 kg |
All specifications
| Elements | 5 |
|---|
About
A 40 mm wide-field eyepiece in a 2-inch barrel, with a 72-degree apparent field and 28 mm of eye relief. Five fully multi-coated elements in three groups, with a standard 2-inch M48x0.75 filter thread.