Galaxy Zoo Talk

Why are we asked to classify black and white images when colour ones exist?

  • dindon by dindon

    For example. here the b+w image looks like a bowl of porridge.

    But when you look at the color image, it becomes immediately clear that it's a spiral galaxy.

    I'm sure there's a good reason to do it this way - I'm just curious.


  • Capella05 by Capella05 moderator in response to dindon's comment.

    Hi @dindon - welcome ๐Ÿ˜ƒ

    The colour images (from SDSS) have previously been classified by the community, but with these monochrome images we are doing something special!

    The Scientists' are now looking at how our classifications differ when we only view a galaxy in a single band / filter. Certain features are not discernible in certain filters, now they just need to work out what.

    They need our help to do that ๐Ÿ˜ƒ

    Hope this helps!