You might want to try my SimCCD and Exposure Planner utilities. They can be used to give a recommended exposure time for that part of the image that is most important to you. For example if you want to get a good signal to noise ratio in the tidal tail of a galaxy, you can select that region and these utilities will tell you how many subs to take. You can find more information about these utilities at
--- In firstname.lastname@example.org, Mark Striebeck <mark.striebeck@...> wrote:
> I found some interesting articles about how to evaluate the different
> exposure times for the RGB images. But I couldn't find anything how to
> determine the exposure time for the luminescence images. Is there a general
> rule or are there good sources to read up on it?
> [Non-text portions of this message have been removed]