M51

M51, a.k.a Whirlpool galaxy, an interacting grand-design spiral galaxy of class SA(s)bc pec ~25 million light-years away and 76,900 light-years wide in Canes Venatici.

The interacting galaxy on the right is dwarf galaxy NGC 5195. These are the most famous interacting galaxy pair.

LRGB 10h10m (49:95:90:71 x 120s) from SPA-2, SPA-2 an Officina Stellare 700 RC telescope, with FLI PL16803 QHY 600M Pro camera and Astrodon LRGB 2GEN filters on an Officina Stellare equatorial fork mount with absolute encoders and direct drives. Situated in Oria, Spain. Part of telescope.live telescope network. Taken on 22-24 April 2023.