ZWO M42 Adapter for CAA-M54 – Expand Compatibility Without Changing Back Focus

The ZWO M42 Adapter allows users to convert the CAA-M54 Camera Angle Adjuster to an M42 thread—ideal for connecting legacy ZWO cameras or accessories like the 36mm EFW. This adapter replaces the default M54 mount, preserving the standard 55mm back focus and ensuring secure, precise rotation.

How to Install the M42 Adapter:

1. Use the supplied wrench to remove the original M54 adapter.
2. Screw in the M42 adapter.
3. Tighten the locking screws.

Perfect for those upgrading or adapting older gear, this adapter ensures seamless integration without disrupting your optical train.

Mechanical Diagram