M101 -- The Pinwheel Galaxy

Pinwheel Galaxy with Supernova 2023ixf

21:35 EDT May 25, 2023.
ZWO ASI2400MC Pro on 10" RC at f/9.
45 min (unguided 30 second exposures).
Click on image for larger unannotated version.

Sceenshot of the MaximDL App Showing M101

The Screen Stretch window shows the Minimum value, below which pixels are shown as black,
and the Maximum value, above which pixels are shown as white.
The center of the galaxy is the orangish spot near the center.
The very bright spot down to the left of center is the Supernova.
All other white spots are stars in our own galaxy.

Two Sceenshots of the MaximDL App Showing Flux Information

The Information window in the left image shows that the "Intensity" of the supernova is about 288000. (NOTE: The units don't matter.)
The Information window in the right image shows that the "Intensity" of the core part of the galaxy is about 205000.
So, the supernova is about 1.4 times more fluxive than the main core part of the galaxy.
Also look at "Maximum" pixel values and "Bkg Avg".
From these, we see that the supernova is about 50 times brighter than the brightest part of the center of the galaxy.

Pinwheel Galaxy