M31- Andromeda

Hutech Modded Canon 60D, Hutech light pollution filter. Skywatcher ED80(600mmf7.5 with a 0.8x reducer). Image stacking using ISO1600 -30secs-7 frames, ISO1600-60sec-17 frames, ISO800-900seconds- 9 frames, ISO800-600seconds-5 frames, ISO1600-900secs- 59 frames, ISO1600-600seconds-29 frames, ISO1600-300secs-28 frames for >25 hours total integration time using nearly equivalent dark frames, bias and 21 flats. Different exposures are used to optimize detail capture in the brighter central area and outer regions. Taken over several evenings and processed primarily in Pixinsight, minor contribution by Photoshop, Topaze Denoise and finally DXO Photolab 4 for the copyright!
The red areas are clouds of hydrogen gas, similar to the red areas in images Dan Kearl has posted recently.