Comet Lulin, in a layered composite of 5 separate exposures averaging about 100 seconds each, taken in a time span of about 9 minutes on Tuesday, Feb. 24 2009 beginning at 22:29 CST. It was taken with a Nikon D80 and a Sigma 500mm lens set at f/4.5. It is a 50 percent crop. The motion of the comet across the sky in this short time frame is clearly evident by the shifting position of the comet nucleus against the background stars. In nine minutes, it moved about 6 arc minutes, equivalent to about a fifth of the moon's diameter.