Diagonal Image Straightened To 45 °, Diam. 31.8mm. Login This Diagonal Support Images Properly Oriented When Observing With Refractors Or Catadioptric. Allows You To Turn The Telescope Powerful Spotting Scope.
Meade Model 933 Image Erecting Prism for ETX-60, ETX-70 and ETX-80 Models. Produces a correctly oriented image and convenient 45° observing angle for terrestrial observations. A great item for a home with a view or nature watching.