Baader Zeiss Camera Adapter - M44(M)/T-2(M)

The primary purpose of this Baader adapter is to connect optical accessories that use the standard T-2 (M42x0.75) thread to telescopes or other components that have a female Zeiss M44 thread. It bridges the gap between older, high-quality Zeiss optics and modern astrophotography equipment.

This adapter has two male threads:

• Male M44 thread on the telescope/Zeiss side.
• Male T-2 (M42x0.75) thread on the camera/accessory side.

Yes, this is a primary use case. If your classic Zeiss refractor has a focuser with a female M44 thread, this adapter will thread into it and present a male T-2 thread, which is the standard connection for most ZWO ASI cameras and T-rings for DSLRs.

Yes, while designed with Zeiss systems in mind, the adapter will work with any optical component from any manufacturer that correctly implements a standard female M44 thread for its connection.

Many older Zeiss telescopes and accessories are optically superb but use connection standards that are now obsolete. This adapter allows you to pair that excellent optical quality with the advanced capabilities of modern CMOS sensors, filter wheels, and guiding systems, effectively upgrading a classic instrument for modern astrophotography.

It depends on the specific connections. Most Baader T-2 diagonals have female T-2 threads on both sides. This adapter has a male T-2 thread, so it would not directly connect to the diagonal's female T-2 port. You would need to check the specific thread on your Zeiss telescope's focuser and build the appropriate adapter chain from the Baader T-2 component system.