Quote:
Originally Posted by Peter.M
The QHY9 has an optical window that goes between the camera body and the filter wheel, from memory it is 12mm or something. I got precise parts to make me an adaptor that was shorter and now run the camera without that window. It allowed me to use the tsoag9 with the cam and a mpcc.
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Even with the window in the mix it still doesn't hit 55mm, though I guess adapters and such could add a bit. Do you know off hand which version of the filter wheel you have?