M101 galaxy

M101 (also known as Pinwheel Galaxy) is a spiral galaxy in the constellation Ursa Major. It has over 170 000 light years in diameter and it lies 21 million light years away from Earth. Thanks to that it's one of the brightest galaxies, which is seen also in small telescopes. It was discovered by French astronomer Pierre Méchain in 1781.

 

Canon EOS 760D, Sigma 135mm f/2.8, AstroTrac TT320

EXIF: 17x240", ISO 400, f/5.6 (1 hour and 4 minutes in total)

Darks: 18x

Flats: 20x

Dark flats: 15x

Turnov, Czech Republic (Bortle 4)

24/03/2022

Done