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thanks dunk, ryan and martin.
how slow are we talking for the 183c Dunk? Was that in 8bit mode? that sounds like the main issue you have with it in terms of planetary? It is a very sensitive camera still so i'm not sure the SNR is going to be a major issue for it. The pixel size on the other sensors are also small < 3 microns but more than 2.4 of the 183c. So in essence small pixels are on the good dedicated planetary cams.
Ryan the formula you've put down seems to suggest that quite large pixels are suitable which is interesting. so most cameras are already over sampling quite a lot so perhaps no massive benefit in going extra small.
cheers martin - looks like a good rule of thumb for adapting to the seeing conditions.
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