Thank you chaps!
It is getting harder to remember the processing steps each time I add
a new result
I have a pattern I seem to follow but digging that out, deciphering it
and repeating it once or maybe twice a year is very time consuming.
Luckily I saved file names which give away what process I did.
As the file name gets longer I can see the train of work so to speak.
The most difficult process seems to be matching histograms or normalising
so the background stars and Proxima itself doesn't change in brightness too
much in the animation.
Steve