Quote:
Originally Posted by rustigsmed
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.
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All in 8-bit mode:
800x600 => 80fps
640x480 => 100fps
480x352 => 133fps
So it's important to calculate the minimum ROI you need to squeeze the best out of it.
The 224, 290 and 462 benefit from the HCG (high conversion gain) mode which gives them super low read noise (as little as 1/3) and the 183 just can't compete with that.
There are a lot of posts about using:
optimal_f_ratio = pixel_size(in microns) x 5
(but I don't have the references to hand right now)
So it's worth bearing all that in mind when picking a camera for planetary.
FWIW, I've tried my 183 with my C11 and it's a bit weak on anything besides the Moon, in comparison to the others mentioned above.