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Qhy9m to WO P-Flat 4 correct distance
Hello Everyone
I need to confirm if my thinking is right regarding the spacing between my qhy9m ccd face and the WO P-flat 4 focal reducer/ flattener.
The distance from CCD face to the Filter wheel M42 screw is 39.3mm
Wo suggests a distance of 73.5 so i need to insert an spacer measuring 34.2mm or 35mm rounded up.
The question I have, is the total distance of 73.5 mm from the m42 thread of the ccd end of the p-flat 4 to the CCD face
or is it the variable setting on the P flat 4?
I think its the spacing between the M42 thread to ccd face, but can't seem to find any documentation.
Regards Paul
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