Galaxies NGC 4550 & 4551 - Clockwise / Counterclockwise movement

Galaxy NGC 4550 is located in constellation Virgo and is part of the Virgo Cluster, about 50 million light years away from Earth. An interesting fact is that NGC 4550 has stars which move counterclockwise and another part of the stars move clockwise.

Picture taken with Nikon D7500 and TAL200K f/8.5. Setting ISO6400 and 10x60s. Stacking using DeepSkyStacker and final editing with CS4.