Hi Gary,
I think I'm being a bit hasty in suspecting the FR's, as I tried the C8 direct last night on the same stars and the distortions were still there, so I have either a collimation or focus or both as first suspects.
I have just swapped out the C8 for a different scope so will verify the mount and camera that way. If that looks OK, I'll go back to the plain C8 and start fiddling. A clear sky would help at the moment.
Cheers,
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