M31 - Andromeda Galaxy

Object: M31 (Andromeda Galaxy) Equipment: Takahashi E-130D astrograph f/3.3 on an Astro-Physics 1100GTO mount; SBIG STL-11000M, Astrodon filters. Exposure/Processing: 16.5 hours LRGB 1x1 binning up to 300 second exposures. Collected/Processed with Maxim DL 5, PixInsight and Photoshop. Location/Date: 2017 Chiefland Astrofest, October 15-19, 2017, Chiefland, FL Comment: This is a 2021 reprocess of 2017 data. Andromeda galaxy (M31) is shown with companion galaxies M110 and M32. The large blue star at the top of the image is 35-Nu-Andromedae, a B5V SB blue main sequence dwarf star 679 light years from Earth. M31 is 2.5M light years from Earth and 131K light years in diameter.