The Great "Nebula" in Andromeda

Hard to believe it has been just over 100 years since humanity established that the spiral nebulae they were observing were in fact other galaxies. Edwin Hubble provided the critical evidence observations of M31. This is a favorite target for visual observation as well as imaging.
This image was captured with my wide-field rig from backyard.

Askar FMA180 Pro, ZWO ASI2600MC Pro, Sky-Watcher EQ6-R Pro, ZWO EAF, & Pegasus Astro Pocket Powerbox Advanced

All pre and post processing was performed in PixInsight. Russ Croman's PixInsight Plug-ins (BlurXTerminator, StarXTerminator, & NoisXTerminator) were used.

It is comprised of 111 subs at 120 sec each for a total exposure of 3 hours and 42 minutes.