Hi, Slawomir,
The blue stars/clusters in the spiral arms are razor sharp and extremely detailed. If I stretch your image a tad, I can also make out the dwarf companion galaxy at about 5 o'clock from the main one. Well done.
I wonder if the core is a little burned out toward blue-white, so you're losing some of the yellow-orange colour, and also losing contrast in the dust lanes close to the central bulge. It's a valid interpretation exactly as it is, of course.
A fine image.
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