Super nova 2011dh in M51 whirlpool galaxy 4'th of June 2011
C8 at F10, SBIG ST-4000XCM -20C 1h00min (6x300sec).
Light travel time: 37 million years.
This image shows a mag 13-14 super nova in M51 (arrowed), SN2011dh (Type IIb), the supernova is visualized in the blinking AVI link above.
Link to more infomation on the super nova.
Processing: CCDSoft, AstroArt 5.0, ImageJ and VirtualDub for AVI processing.