any ideas what the green patch is?
by ElisabethB moderator
Looks like an artifact to me
It's in Stripe 82, and in the SDSS Explore tool, there are ~20 'secondary' photometric objects essentially coincident with the galaxy's nucleus, and the 'green patch' is not one of them. That suggests it is, in fact, an artifact; however, we can check when the multi-wavelength viewer is available.
It might be interesting to find out if it is one of the Stripe 82 objects in an earlier GZ project; it's certainly bright enough ...