This is the centre of M31, the Andromeda Galaxy. It's about 2.5 million light years away and this image just shows the central region (it's actually 6 times the diameter of the full Moon to see it all). I took 6 x 5 minute exposures in Luminance and a 1 x 1 minute Luminace image, which were all stacked and processed in MaximDL followed by a little tweeking in Photoshop CS3. Image taken on 5th November 2012 in between the fireworks and clouds. The camera was an Opticstar 145M-ice using a Baader 1.25-inch filter. The telescope was a Televue 102 and was guided by a Starlight Express Lodestar camera in a separate (really cheap) refractor in tandem. Celestron CGEM mount on a pier.