The image was flipped into a more commonly displayed orientation and slightly reprocessed to bring out more subtle detail and colour. It was then converted to B&W with additional processing in black and white.

The small galaxy below M31 is Messier 110 (M110, NGC 205). The tiny galaxy immediately adjacent (above) Andromeda is M32.

Nikon D7200 (unmodified); Sky-Watcher ED80 Pro Refractor and a Tele Vue 0.8x Reducer/Flattener @ 480mm / f/6; ISO 800; Celestron AVX mount; guided with SSAG; and PHD2; 38 x 5 minute subs (total integration is 190 minutes; 3 hours and 10 minutes).

Shot in RAW (NEF); stacked using Pixinsight (Calibration Bias, Dark and Flats were used); processed in Pixinsight and Photoshop CC.