Comet Hartley

Object Comet Hartley
Exposure 28.5 minutes (57 X 30 seconds)
ISO 1600
Camera Canon 350D DSLR
Optics 8" f/4 Schmidt Newtonian Telescope
Location St. Croix Observatory

Calibration and stacking done with Deep Sky Stacker in comet mode. Background correction and noise reduction applied using Paint Shop Pro.

The stars are trailed due to the comet mode stacking. The comet was fixed in each frame and aligned during the stacking process. The trailed stars are an indication of how far the comet has moved in less than a half hour!