No matter what your camera, it is not just the average adu you need to worry about. What you need to be sure of is that all of your histogram is in the linear range.
Modern CMOS cameras are very linear, so as far as adu limits, you only need to be in that range, you should be pretty safe if the entire histogram is between 10% and 90% of your 65000 adu.
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But note the critical point is that the full histogram needs to be in this range. If you are using a mono camera based on this sensor, just make sure the bottom and top of your histogram are within this range, centering it anywhere near 32 K should be fine. But always check your histogram. If corner vignetting is bad, so corners are dark, you may want to set higher, as long as the highest points of the histogram are in range you are okay.
For color cameras, it is more complex, it depends on your flat panel. Generally the red or blue channel will be weak, the green strong. So looking at your histogram, make sure all color histograms are within this linear range.
Note it is better if your light source for flats is not too bright, there can be extra reflections with a bright source. I do have this sensor and find I can use the same gain with my flats, with exposures of about 1/10 to 1/2 second depending on the filter. Again, my settings are based on the histogram, the point being is a really bright light source for your flats is not a good idea. My flat panel is at the lowest brightness, to keep reflections down.
If you follow these rules, I have not had issues with this sensor and flats, with my color camera, which is the stress case.
But note, it is critical, to use a dark flat (as well as darks for you lights) and to match exposure, gain and temperature between your flats and flat darks and lights and darks, if you don't, guaranteed not to get good flats.
Hope this helps
Rick
