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Baader Conversion Ring Zeiss to Hex Focusers - M68x0.75(F)/M68x1(F)
The Baader Conversion Ring connects high-end Zeiss M68x1 accessories to focusers equipped with a standard male M68x0.75 thread. This adapter features a female M68x1 thread on one side and a female M68x0.75 thread on the other, creating a secure, direct-threaded link between otherwise incompatible components in your optical train.
Connect Zeiss M68x1 Accessories to M68x0.75 Focusers
This conversion ring solves a common problem for imagers who own premium Zeiss M68x1 threaded correctors or reducers but use focusers, such as the popular Explore Scientific Hexafoc, that terminate in an M68x0.75 thread. By bridging this gap, the Baader ring allows you to build a robust, flex-free imaging train without compromising on your choice of optics. It ensures your Zeiss accessories can be securely mounted to a wider range of modern focusers.
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What is the primary use for the Baader M68x0.75 to M68x1 Conversion Ring?
Its primary function is to adapt a focuser with a male M68x0.75 thread to accept an accessory with a male M68x1 thread. This is common when connecting Zeiss-standard correctors, reducers, or field flatteners to focusers from brands like Explore Scientific.
Will this Baader ring work with my Explore Scientific Hexafoc focuser?
Yes, this adapter is specifically designed for this application. The Explore Scientific Hexafoc series of focusers typically uses a male M68x0.75 thread on the drawtube, which will screw directly into the female M68x0.75 side of this conversion ring.
Can I use this Baader ring to connect my Zeiss M68 reducer to a non-Zeiss focuser?
Absolutely. If your Zeiss reducer has a male M68x1 thread and your focuser has a male M68x0.75 thread, this ring will create the necessary connection. It effectively converts the focuser's thread to the Zeiss M68 standard.
What are the threads on this Baader Conversion Ring?
This is a female-to-female adapter. It has two internal (female) threads:
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Side 1: M68x1 (for Zeiss accessories)
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Side 2: M68x0.75 (for the focuser)
Does this adapter add significant length to the optical path?
As a thin conversion ring, its contribution to the optical path length is minimal. However, any adapter adds some length, and this must be accounted for when calculating back focus for your specific corrector or reducer. Always measure your final setup to ensure correct sensor spacing.
Is this Baader Conversion Ring a male-to-female or female-to-female adapter?
This is a female-to-female adapter. It is designed to join two components that both have male threads: an M68x0.75 thread on the focuser side and an M68x1 thread on the accessory side.
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| Net weight (kg) |
0.03 |
| Compatible Brands |
Baader Planetarium, Bresser, Omegon, Zeiss |
| Inner Diameter / Clear Aperture (mm) |
65 |
| Outer Diameter |
76 |
| Type of Adapter |
Reducing Adapter |
| Optical length (mm) |
12 |
| Usage |
changes a M68 outer thread in M68 inner thread |
| Inner Connection (eyepiece/-camera-sided) |
M68 x 1 |
| Inner Connection (lens sided) |
M68 x 0.75 |
| Adapters Family |
M68 System |
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Baader Planetarium Warranty
