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Thanks Paul and Glen
The actual target image on my QHY9 is fine, no problems at all (well to my eyes). Very flat and my collimation is done with a Tak collimation scope and is very good.
In the daylight I remove the guide camera from the OAG and look down to the prism I can see out the front of the scope(as you would expect) and can see the secondary and the reflection back but it is very plain to see that it isn't all lined up properly, not collimated I guess you would call it? Or is that what the "Off Axis" part of OAG is?
Even if I adjust the prism down the shaft as close as I can go to the centre off the scope (more to the middle of the light path if that makes sense)the mis-alignment of everything doesn't change.
I hope that makes sense, I am in the obs now having a close look at everything on the bench. I can take some photo's and that may help explain things.
Thank you again
Jeremy
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