NGC 3293, which is also known as the Gem Cluster
Taken on 17 March 2010 from my backyard observatory in Canberra with a 31.75cm RCOS Ritchey-Chretien telescope working at f/9 and a SBIG STL-11000M CCD camera.
LRGB exposure 140:30:30:30 with Baader filters. All exposures unbinned.