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 |