strange arc like images

• by tcwang

  outsife of the galaxy are two filaments, left arc looks moe regular.

  Posted July 12, 2016 3:47 AM

• by Budgieye moderator

  The arcs are cosmic ray hits on the ccd "film". There are many in the images. We just learn to ignore them.

  Posted July 12, 2016 8:09 AM