Messier 101 - Pinwheel galaxy

A spiral galaxy in the Ursa Major constellation, located ~22 million light-years away from us 🙂

I re-edited this image, adding hydrogen-alpha as well 🙂 30 hours with a modified DSLR + another 7 hours with an IMX 533 mono at -15

For RGB, 25 hours with a Nikon D780

Newton 200/1200, EQ6R/HEQ5