Fits telescopes with 1.25 focusers or visual backs, 90 viewing angle, best for observing objects overhead.
Accepts standard 1.25 eyepieces, Barlow lenses, and other accessories with a 1.25 insert barrel.

The Celestron 1.25 Star Diagonal slides into the focuser (1.25) of your refractor or catadioptric telescope and accepts standard 1.25 eyepieces, allowing you to view objects more comfortably. A diagonal that is angled at 90 helps avoid neck strain when looking through through the eyepiece.

Please note that a 90 diagonal will display images that are right side up, but left to right orientation will be reversed.