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This is a
second and much more successful attempt at capturing this faint
11th magnitude comet the next night. Images on the 27th were
fogged by a mysterious red light that I could not find and I
had to attempt to process that out, with mixed results. I finally
found it after an hour of searching the following night - a neon
lamp on an electric blanket under the laptop I was using for
taking the images. With this gone, I tried again the following
night, and was completely successful, a very deep 90 minutes
total integration time that not only shows the comet and its
teal color well, but extremely faint galaxies between 18th and
19th magnitude all over the field. Stars to magnitude 20 are
also recorded.
I am presenting
to you two variations in processing here. The first, the stacked
comet sub frames were aligned with the very first frames comet
image as were the stars from an hours worth of collection. This
shows the comet stationary against a stationary star field.
The second image
was processed to track the comet only, showing its movement against
a colorful star field for over an hour of L data. Ive left both
images with a level 28 background to better reveal the comet
and faint galaxies.
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Lens: 12.5" f/5 Home built Newtonian
Platform: Astrophysics AP1200
Exposure: 1:30h LRGB
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing 4/10, Transparency 8/10
Outside Temperature: 28F
Processing Tools: Maxim DL, Photoshop CS3
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