What sort of targets are you interested in, Chris?
At that focal length and with the sort of seeing we get in SE Qld you won't want a sensor with small pixels, although binning is an option if you get a sensor that does it well.
Are you using a full frame sensor already on the GSO RC10 without a flattener or reducer? Last time I tried that on my RC10 the corners looked pretty awful!
Cheers,
Rick.
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