This image of M106 is a stack of 1060 x 10s integrations (about 2.9 hours in total). The image was stacked using the Seestar stacking software. I used Siril for photometric and histogram adjustment, as well as background extraction. I followed with Topaz AI for noise reduction and for 2X enlargement. I then did final tweaking in Affinity (saturation, Astroflat plugin). It's interesting to note that the stacking process dramatically reduced rotation artifacts--they are barely visible on this image. I've also included an annotated image.
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