I would like your help and advice learning more about post-processing. This is a widefield mosaic (no guiding, no go-to and my first mosaic effort) taken over four nights (during the last week) of the Gamma Cygni (Sadr) region. Here's the rundown:

The Canon+RedCat combo produces a FOV of ~5°x3°. The four panels together will maximally yield approximately 10°x6°, although this ends up to be less because of the overlap required to stitch together the panes (in PS).

Each panel is composed of 104 subs, each of 60". Gamma Cygni (Sadr) was the obvious point on which to center the image. For each of four nights I shot 150 subs and pruned down to the best 104 (the worst night's best output). With the Star Adventurer, about 1/10 of the frames are lost to tracking wobble. There was also a stiff breeze at times each night, which affected a few frames. Starlink, ISS and my own picky deletions took care of a few. Finally, since the flight path of Sea-Tac International is directly overhead, many frames were lost to Boeing and Airbus. I'm sure I have an accurate picture of arrivals and departures over four nights. Can't identify the aircraft though. :-)

The image posted here--a draft--has a photometric color calibration, green noise reduction, histogram stretch and background extraction done in SirL. Then, in PS I made one small curve adjustment, one levels adjustment and one pass of Topaz Denoise. That's it. I know that more can be done, but am interested in your personal thoughts and advice on how to proceed. I only know how to use PS for post at this point, although if you know Sirl tricks I can use before PS, I'm interested in learning.

So, what would you do next? I'll take all your thoughts and recommendations into consideration and make whatever changes I can do (with my beginner's skill set) to enhance the image. I'm hoping this will be a good learning process for me, and maybe for other newcomers.

You can post your thoughts here or PM me. Feel free to write in any language! (I am a retired linguist by training and like that challenge, as well.)

Thanks so much for helping me out. I appreciate the learning and will return the favor one day to somebody!

Clear skies,

Daniel