No need to explain why M51 is known as the Whirlpool Galaxy.
The smaller galaxy to the top of the image is the NGC 5195. this is a dwarf galaxy that is interacting with the Whirlpool Galaxy.
Both galaxies are a mind boggling 25 million light years away !
With this image I tried stacking various timed exposures… although there is plenty more to learn and try on this target. Need to tease out a little more colour!
10 x 10 second 800iso
74 x 50 second 800iso
5 x 90 second 800iso