- ETX to SCT threaded adapter for all ETX telescopes
Meade Rear Cell Adapter for ETX TelescopesMeade ETX to SCT threaded adapter for all ETX telescopes: Once you attach this adapter to your ETX, you can connect accessories like focal reducers, off-axis guiders, and others that require an SCT thread.
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What thread diameter does the inside ring have? I want to use it on a Celestron C90 and be able to use SCT accessories on it. I believe my C90 has 34.6mm thread diameter.
Hello and thanks for your question! The inside diameter of the the Mead ETX 90 adapter is approx 34 mm. This should work but i cannot verify the pitch will be the same. If you need any further assistance please feel free to contact our staff.
Will this work with my ETX125 AT rear cell to adapt the Meade .63 Focal Reducer which has approx 51 mm (2") thread ??? My plan is to use this combo with my 35 MM ASP DSLR camera for Solar Eclipse imaging
Yes, this adapter will work for attaching the f/6.3 reducer. You may need to experiment with the distance to the camera after the reducer for best performance.