The Baader M55a / M68a (Zeiss) adapter is for all Baader 2" mirror and prism star diagonals and is for direct connection to the M68 Zeiss thread. You'll be able to convert your Baader 2" Diagonal on both sides to M68 thread connection. Just remove the 2" nosepiece or ClickLock and the M55/2"/S58 ring from the housing of the star diagonal and screw in the M55/M68 adapter!
If you wish to remove the black 2" SC / S58 threaded ring from the housing to expose the M55 thread, you will need the adjustable pin type face wrench ø 2mm (#2450062).
This adapter is designed for the following 2" mirrors / prisms, but is already included in the delivery of Baader 2" ClickLock Diagonal Mirror M68 thread (Zeiss).
- Baader 2" ClickLock Diagonal Mirror (#2956100)
- Baader 2" BBHS Mirror Diagonal with 2" ClickLock Clamp (#2456115)
- Baader 2" BBHS Prism Star Diagonal Prism with 2" ClickLock Clamp (#2456117)