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A little clarification on the histogram. The back of camera histogram will not show you that the white point is clipped. It would show that on total overexposure like a white image. The camera histogram does not resolve blown out stars. But on camera is via display mode button a view available showing clipping in the image. It blinks over and under exposed images on and off. So that way you could try find the point just prior to blowing out stars. I will try this next time, too. Checking for overexposed stars in the field to determine exposure is a good tip. I’d absolutely love to have some colour in the stars but I shoot dual narrowband on DSLR in Bortle 7. while nebulae come out really great, the stars are white.
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