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Albireo
Hi All,
Attached is a photo of Albireo. I only recently noticed, after zooming in, that the yellow is dominant on one side of the star and the blue is dominant on the other. Is this an unavoidable chromatic aberration or is it caused by being slightly out of focus or collimation etc.
FYI, the photo was taken with a 14" goto dob, 4 seconds, ISO 200.
Thanks,
Duncan
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