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Dec Thor's Helmut Run

Unknown artifact? Notice it is in the same position but the background stars move.
Image on the left is a stack of the 2min exposures with no alignment.
Image on the right is a stack of 5 min exposures also with no alignment.
Aligning on the stars smears the artifact.

sunset581604.jpg clo81704 copy.jpg thorart.jpg sungreen.jpg chelixcolor-0-RGBreg100persm.jpg
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