Okay, I give up, what is the blue/green ring?
A flaw in the CCD? Artifact? Wormhole entrance? Sauron's eye? Or a cosmic cat's eye? Wish I could zip over and check it out...
by ElisabethB moderator
This is an infrared image of this galaxy.(image is rotated) The weird ring is indeed an optical artifact. Probably caused by the brightness of the core.