blueline

• by ZZZoro

  ???

  Posted March 24, 2013 8:58 PM

• by ElisabethB moderator

  That is a satellite trail.
  The satellite reflects the sunlight and because of its speed it gets caught in just one filter.
  Satellite trails can also be green or red.

  Posted March 24, 2013 8:59 PM

• by Janee0905

  thank you very helpful

  Posted June 27, 2014 12:18 AM