Gravitational lens? Reflection?

• by Hubble1

  Is this a gravitational lens effect ore an reflection?
  It came out of nowhere and looks like a green beam.

  Posted November 12, 2013 9:08 PM

• by ElisabethB moderator

  The green glow is an optical artifact caused by a bright star just outside of this image.

  Posted November 12, 2013 9:20 PM