Just happened on their result (using StarTools). It's positively stunning!
http://www.astrobin.com/96610/
Collaboration of 10 amateur AP'ers on M51
Collaboration of 10 amateur AP'ers on M51
Ivo Jager
StarTools creator and astronomy enthusiast
StarTools creator and astronomy enthusiast
Re: Collaboration of 10 amateur AP'ers on M51
There you go...