GCX-1.5 attempts to be a complete solution for capturing astronomical images (using indi or indigo), processing them, and doing stellar photometry ready for submission to AAVSO (though not quite there yet). It is compilable under linux.
I have made a fork of of the original gcx-1.5 that is no longer available on github. I have removed some bugs that made the original unworkable.
Please have a look at it at https://github.com/wgoltz/gcx-1.5. Also, it would be great to have it back in active development, if anyone has some spare time.