The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs)[3] away from Earth in the constellation Ursa Major.
Tekkies: Celestron C11 EdgeHd (Baader optimized), QHY 367c pro on Eq8 pro. 51x120"
Copyright: Mario Zauner