The Antares 2" XWA 20 mm Eyepiece, in their XWA Series. It has a Focal Length of 20 mm, and an Apparent FOV of 100°. It is made to fit into any standard 2" telescope focuser and diagonal. MAking the 100° XWA Eyepiece from Antares high-performance eyepiece.
Function: Extra-Wide-Angle AFOV Eyepiece
AFOV: 100 degrees
Focal Length: 20 mm
Barrel Size: 2"
Eyecup: Yes, included