Thanks for the comments. Perhaps as you say the OAG is part of the problem amplified by the less than ideal reducer distance. When I look at an earlier dslr shot without the OAG the distortion is quite controlled.
Quote:
Originally Posted by The_bluester
My first suspect would be the OAG. Everything edlse I can see there looks solid. I have an Orion thin OAG and it has the same dovetail and screw style connection at one end (Admittedly worse as it only has two screws to hold it, 180 degrees apart) and it gives me no end of trouble with tilt issues.
Try loosening the screws, rotating the fittings a little at both ends (You can put them back where they are again, just as long as you move them) and see if the tilt changes direction or magnitude.
My TOAG is on the list for replacement, probably with the QHY one as it is all bolted together parts with screw fittings to adapt to whatever is either side.
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