The Pinwheel Galaxy M101 or NGC 5457) a face-on spiral galaxy 21 million light-years distant in the Ursa Major, first discovered by Pierre Méchain in 1781

L(Ha)R(Ha)GB
Luminance taken on the nights of May 31 and June 2, 2016 Highland Lakes NJ. Celestron C8, Starizona F7.5 reducer/corector 1500mm effective focal length, QSI 583wsg camera

Luminance 50 x 5 minutes binned 2x2
H-alpha 10 x 10 minutes binned 2x2

RGB taken May 10, 2016 Cherry Springs State Park

William Optics Zenitstar 80, Televue reducer/corrector, QSI 583wsg
RGB 7 x 4 minutes each binned 2x2

Total exposure 378 minutes