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Here is one response from Richard Crisp who is a professional in the CCD industry:
"Stars saturate first
Nebula signals are rarely more than 5000 electrons in my experience
Ditto for galaxies
There are multiple strategies for managing the star color issue
One is to take shorter exposures and more of them
Low read noise is key in this situation because even though 100 x 1 seconds is the same amount of signal as 1 x 100 seconds; it isn’t the same amount of noise.
Another strategy is to let the stars saturate and then replace them with a “star shot”….
I personally am not a fan of such hocus pocus but it will solve your problem."
So I guess the main thing to keep an eye on is the ADU of the brighter stars and if they start getting overexposed then back off the exposure time.
11002 chip has a well depth of around 60,000 electrons which is quite substantial.
Greg.
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