Dark spot
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by LibbyB68
There is a darker sphere in the centre of the brighter area
Posted
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Wow! Sharp eyes! I can see exactly what you're talking about. Looking at the object on SkyServer, I can't see the same darkening. I'm surprised the images could be that different given the potential significance.
Dark spots seem to be a common over-exposure artifact of bright stars but I can't recall seeing the effect from a galaxy.
Posted