Galaxy Zoo Talk

Why is the image green?

  • atomicscratch by atomicscratch

    Does anybody know why this image is so green and the galaxy is only just visible when the image is inverted?

    Posted

  • Capella05 by Capella05 moderator

    Something went wrong with the imaging - looks like there was a problem with the green filter.

    By the way, welcome to the Zoo 😃

    Posted

  • ElisabethB by ElisabethB moderator

    Hi atomicscratch and welcome to the Zoo !

    Apparently, you found a part of the atomic scarf, a region where the imaging and the filters really misbehaved.

    Here's the extremely zoomed out image : enter image description here

    If you get something like this again, just click star/artifact.

    More weird images here : http://tinyurl.com/GZartifacts

    Happy hunting ! 😄

    Posted

  • planetaryscience by planetaryscience

    I've seen this particular one before; it's a patch of sky in the constellation Cassiopeia, near the Andromeda galaxy. It seems to have been added in a more recent Dr8 sweep, with, as you can see, randomly overexposed green, blue, and red filters. There are other areas of the SDSS sky like this, but this one's the largest and worst.

    Posted