There
            are few comets which have such a long and detailed tails such
            as this one that can be seen while the head is below the horizon.
            In this case, the comet is south of the sun, and cannot be seen
            from the northern hemisphere. We can see however the faint ends
            of the tail above the western horizon about 1.5h after sunset.
            This image was taken north of Payson with the crescent moon blazing
            in the western sky nearly washing the comets tail streamers out.
            These streamers, called synchrones are parallel bands in the
            tail.

            
Unprocessed
            image, with the camera tracking the stars for 2 minutes shows
            very faint vertical banding below the moon.

            

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1024 x 768



            
Histogram
            Equalized image for showing very faint details reveals converging
            rays , Phoenix skyglow to lower left.

            

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1024 x 768



            
Processed
            image to remove light pollution gradients shows the converging
            rays fairly well now.

            

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1024 x 768


Instrument:  Canon 17 - 40mm f/4 L lens
Platform:  Robotic Barndoor mount
Camera:  Hutech Modified Canon XTi @ ISO800
Exposure:  2m
Filters:  UV
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  4/10, Transparency 8/10
Outside Temperature:  25F
Processing Tools:  Photoshop CS2
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