Very nice job! This is a difficult target in my opinion. I have attemted it several times.
As someone mentioned earlier MAS is a game changer for bringing out colors in both stars and the target itself. HDR Multiscale Transform (HDRMT) is also a game changer process in pixinsight that I use for almost all my targets, but especially for galaxies where it is difficult to showcase the details in the bright core. Could be worth experimenting with.
For improving what is already good I would also suggeest to tone done the Blur xterminator and noise exterminator a tad. You could also expermiment with filters (GAME script in pixinsight for example) by using a stronger BXT image for the core and a weaker for the outer parts (the core has more signal and seems to handle it better), and then blend the two togheter (Image blend script for Pixinsight for example).
Also, while there is data in the outer arms your signal there is not quite strong enough to display it without some motling/noise. A more balanced result could be to sacrifice showing the fainter parts for a more clean presenetation (i.e., stretching less). I myself never apply nose reduction before stretching because it is often tempting bring out details that are just a bit too noisy if I do. Choosing to not show the faintest parts also allows you to use more of the dynamic range for the stronger parts of the galaxy and giving it more depth!
Anyways great job. Orders of magnitude better than my first image!
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Bonsoir à tous,