Image information: Stacked, dark-subtracted, registered combination of 72 x 10s unfiltered images. A blurred version of the image has been subtracted to remove sky ramping, although this has resulted in poorer definition of the spiral arms. Images taken on 19/04/2006 22:35 (60exp) and 01/05/2006 21:48 (12 exp).
Image information: Stacked, dark-subtracted, registered combination of 20 x 20s unfiltered images. Light from the full moon has caused a background gradient that has not been removed. Images taken on 04/07/2006.
Image information: Stacked, dark-subtracted, registered combination of 144 x 10s unfiltered images. An unsharp mask has been applied to bring out the arms and HII clouds. Images taken on 09/03/2007. The horizontal lines are due to imperfect bias subtraction, which has been smeared by tracking errors.