I have a newer shot that I have been trying to
work with but it has whupped my butt all day long so it's in 'cold storage'
for awhile. I did however, run my existing shot through The PixInsight LE
program to remove the vinetting. It came out a little light in the BG, but
it is a big improvement over the previous effort. I may try to combine
the images because the camera angle was essentially identical (got
lucky there).