Imaging the Whirlpool Galaxy (M51)

Today, after a long long cycling tour the weather forecast made me smile 🙂 There was a good chance that most of the clouds will go away between 23:00 and 2:00. Since the moon is going to rise at 2:11am there is a short but sufficient window to do some CCD imaging. Since I only have free view to the south from home, the position of M51 is a quite good compromise. The seeing with my f/5 GSO Newton (F=1000mm) is around 2.7″ – so this is more or less average.

LocationBöblingen / Germany
ObjectWhirlpool Galaxy (M51)
Guidingyes, QHY5-II Mono via OAG
Telescope8" GSO Newtonian
Barlow lensnone
MountEQ6 Syntrek
Luminance6x, 600s, bin: 1x1
Red5x, 150s, bin: 2x2
Green5x, 150s, bin: 2x2
Blue5x, 150s, bin: 2x2
Total exposure~1h40min.

Last updated: December 27, 2015 at 17:09 pm


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