Unusual green colour around "star"
by Budgieye moderator
http://spacewarps.org/subjects/standard/5183f151e4bb21021902fa82.png posted by Damon22
What can be green?
hot hydrogen at z<0.02 hot oxygen at z = 0.2 or 0.3
(green quasars at z=4, but I think we can rule this out.)
see Colours of Galaxies in SDSS : Redshift chart
It doesn't look like a malfunction in the CCD scanner.
I wonder what it is.