A spiral galaxy in the Canes Venatici constellation, located 31 million light-years away from us.
M51 (the galaxy in the center) and NGC 5195 (the dwarf galaxy on the right) together form one of the most famous pairs of interacting galaxies.
Currently 12 hours of DSLR exposure for RGB, and 18 hours of hydrogen alpha with a DSLR + another 14 hours of hydrogen alpha with an IMX 533 mono, at -15. I plan to add some more hours of luminance with the 533 mono after the full moon passes π