The Whirlpool Galaxy, also known as Messier 51a, M51a, and NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus.It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. Its distance is estimated to be 23 million light-years away from Earth.
Instruments and exposure data
Sky-Watcher EQ6 Pro Belt Drive Mod
Guiding:
W.O ZS80 ED
Meade DSI
Imaging:
W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
SBIG ST10XME CFW9 Filters: Luminance Red Green Blue (Baader Planetarium)
Lum:132*5min, exposure 660min
Red:38*5min, exposure 190min
Green:35*5min, exposure 170min
Blue:36*5min, exposure 180min
Total exposure 20 hours