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 There is about
            one comet per 2 years that reaches naked eye brightness on the
            average. This year, we will get a great view in the coming month
            of what has been called the Christmas Comet of 2004. I am presenting
            two images here, taken with the 10D on the robotic barn door
            tracker of the comet as seen Friday night. The upper image was
            taken at 28mm f/3.5 and the lower, 100mm f/5.6. Both exposures
            are 10 minutes in duration. The comet is the only green object
            in both pictures, the coma emitting the Swan bands strongly.

            
The 10D is turning out
            to be absolutely ideal for comet photography. It has the exact
            spectral response to capture the greens and blues, excellent
            light sensitivity at ASA 800 and 1600, and very little noise.

Instrument:  28mm -135mm IS 
Platform:  Robotic Barn Door Mount
Camera:  Canon 10D
Exposure:  10m
Filters:  UV
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  8/10, Transparency 8/10
Outside Temperature:  0 C
Processing Tools:  Photoshop CS, PixInsight
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