Comet Catalina US10
in the morning sky
December 31, 2015

 
 The
            tawny dust fan is really evident here, pointing upward from the
            teal coma. pointing to the left is the gas tail which I foud
            also has plenty of dust in it near the head muting the blue coloration.
            The bright half moon was a real problem with glare and ghosting!
            It was difficult to keep the moon light out of the optical system.
 

            


            
 Click
            here for a larger 1290 sized image


            
Field here
            is about 3 degrees wide x 2 tall.


Lens:  12.5" f/5 Home made Newtoninan
Platform:  Astrophysics AP1200 
Camera: SBIG ST10XME CCD
Exposure:  20m L, 6mRGB - bin3x3
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  4/10, Transparency 6/10
Outside Temperature:  20F
Processing Tools:  Maxim DL, Photoshop CS2
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