Tele Vue - 31 mm Nagler eyepiece type 5
The type 5 eyepieces with 20, 26 and 31 mm are ideal for short focal length Newtonian telescopes, even on the 20" f/4 stars are absolutely point-like almost to the edge.
Type 5 gets by with only 6 lenses. Contrast and transmission are simply perfect.
The 31 mm provides the largest possible field of view with 2", with the 10" f/4 a whopping 2.5°. Focusing requires a 12 mm intrafocal focus path.
Included in delivery:- Eyepiece
- Dust cover
- Packaging
Products specifications
| Eyegard | Rubber foldable for eyeglas wearers |
| Field of view | 82° |
| Weight | 35 oz |
| Eye relief | 19 mm |
| Barrel size / Filter thread | 2" |
| Lenses / groups | 6 Lenses |
| Focal length | 31mm |
