This was my third attempt at M31. I used my NexStar 6SE w/ f6.3 reducer sort of by mistake. My framing was terrible so I had to rotate and crop the image to get the orientation correct.
Date: Oct. 18, 2019
Frames: 42x40s 45x45s ISO1600, 35 darks, 20 bias
Total time: 1 hr. 13 mins. 30 secs.
Bortle Dark-Sky scale: 6
Imaging camera: Canon T2i (unmodded)
Telescope: NexStar 6SE w/ f6.3 reducer (945mm)
Mount: Orion Sirius EQ-G Computerized GoTo Telescope Mount
Software: Backyard EOS, DSS, Astro Pixel Processor