On 2010-01-07 17:26, Doug Franklin wrote:

Oh, and the black spot looks like a physical obstruction or a pretty complete failure of one part of the photo site's electronics. If that's the case, the white halo is probably a completely synthetic artifact of one of the algorithms along the way. Looking closely at the black spot, it shows chromatic fringing, while the white halo really doesn't.

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Thanks,
DougF (KG4LMZ)

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