The Sky-Watcher 28mm LET 2″ eyepiece is a modified Kellner with large eye lens, 20mm eye-relief and twist-up eyecup for comfortable viewing at a remarkably low price.
Fully multicoated optics and blackened interior for brightness and contrast.
- Focal length : 28mm
- Apparent field of view : 56°
- Nosepiece : 2″ with milled undercut and filter thread
- Field stop diameter : 31mm
- Number of elements : 3