The Baader 2" ClickLock Diagonal Mirror uses the innovative and Baader-exclusive all-dielectric mirror coatings, which maintains the 1/10 wave mirror surface accuracy AFTER coating! You won't run into the issue that plagues other all-dielectric mirror coatings, which is the high surface stresses that cause a star diagonal's mirror to warp, ruins the figure, and distorts the optical wavefront.
The 2" ClickLock eyepiece holder expresses similar simplicity and security as the 1.25" ClickLock. The ClickLock holder clamps 2" eyepieces with a quick twist to make them so secure, you can lift your scope with them! This is due to the 3-point clamping, which ensures that your eyepiece won't wobble or become misaligned, unlike single point clamps.
The 2" ClickLock holder and 2" nosepiece can both be removed, exposing 2" x 24tpi threads. This allows users to integrate the diagonal into other configurations while using Astro T-2 system components.
The ClickLock Diagonal Mirror rejects deep UV and IR radaiation, which makes it safer for solar viewing wtih all white-light and H-alpha solar filters