Wavelength separation

• by AGF25

  Quick question: Why is there a spectrum separation in this picture for both the galaxy below and the one above (I am not sure what the top signal is)? To top is red-hued, while the bottom is blue. Is it an optics issue or does it have to do with wavelength speeds?

  Posted July 19, 2013 8:48 AM

• by ElisabethB moderator

  That is indeed an optical artifact

  Posted July 19, 2013 10:24 AM