Thanks for the comments guys – much appreciated.
This is the first avi where I have been able to up-sample without the end result looking, well, up-sampled! I was really, really lucky on this occasion, as the seeing was so variable and I just happened to hit the sweet spot, care of the auto sequence capture function of K3CCDTools.
I'm also beginning to consider the possibility that the softer images may have a changing focus component as well as a poor seeing component, so I'll keep an eye on how the focus may change with temperature, even though my C9.25 has a carbon fibre tube.
Cheers
Dennis
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