For some time I've been using and refining my own version of the BatchPreprocessing script, with the following changes:
- Has the ability to use bias frames as flat darks. In DSLR photography, these are essentially the same and I use the same files for both.
- Has the ability to apply a simple cosmetic correction without creating a process instance in advance.
- Minor refinements to some error messages.
It is called BatchPreprocessingFD and is not quite in sync with the latest version of BatchPreprocessing, but I gladly offer it to the developers of PixInsight if they want to take features from it and add them to BatchPreprocessing.
Available at:
http://www.covingtoninnovations.com/dslr/NewDSLR/index.html#BatchPreprocessingFD