Messier 101

M 101 “Pinwheel Galaxy”

Messier 101 a large asymmetrical spiral galaxy, home to around 1 trillion stars twice that of the milky way. “Only” 21 million light years distant in Ursa Major. Taken using RC 8 telescope @ f/8 1600 mm, MyT mount unguided using protrack, QSI 683 mono camera. Lum 480 seconds x 50 , RGB 240 second x 20 each channel, Ha 900 seconds x 12