Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
M51 2.5 hrs exposure April 16th, Skygazer2013
M51 2.5 hrs exposure April 16th
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M51 2.5 hrs exposure April 16th

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This one was challenging because of my experience with the M66 image, this time I spent 1 hour trying to find a suitable guide star which allowed reasonable centring in the image window. I still managed to get a good exposure run. Now I know where a good guide star can be found...next time I'll get more exposures!

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M51 2.5 hrs exposure April 16th, Skygazer2013