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.72 arc sec /pixel is not oversampled. Depending on which mathematics camp you are in .66 arc sec/pixel may be considered ideal. Sampling Nyquist theory is 3X not 2X (minimum of 2X). My CDK17 is .67 arc secs/pixel and it seems pretty ideal. Too small a pixel and you notice the seeing limiting effect much more heavily.
There are no prices at that link. How much is the G4 with KAF16803?
The KAF16803 will give a residual ghost image very occasionally. For example I imaged the comet recently and it has a very bright head. I then took a few darks and noticed a bright spot that faded with successive darks where the comet head was.
I have also seen that once when a jet flew through an image.
But usually I can't detect but I assume there is some low level of it still present.
A FLI Microline 16803 would be a good choice but I assume still expensive.
A CDK14 sounds like a nice scope.
Greg.
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