TS 2" Star Diagonal Mirror - 91% Reflectivity

This is a very affordable star diagonal with an exceptional mechanical and optical quality within its price range. Even compared with many much more expensive star diagonals we couldn't see a difference in image quality.

The diagonal is inserted directly into a 2" focuser or the 2" visual back of a telescope. It accepts both 1.25" and 2" accessories.

Quality Features:

-- all metal design
-- 2" barrel with M48 filter thread and safety undercut
-- 2" accessories are held in place with a brass compression ring
-- 1.25" adapter also with compression ring
-- very good optical quality

The advantages of compression rings compared with regular locking screws are:

-- the compression ring avoids signs of use. Accessories are not scratched.

-- safer grip and a reduced tendency that accessories are tilted out of the optical axis.