Crab Nebula (M1): This cloud is what's left of a star that exploded (a supernova) in 1054 AD. It was noted as a "guest star" by Chinese astronomers at the time. :)

  • Date: 10/25/2009
  • Scope: AT8RC w/.67x reducer
  • Mount: EM-200
  • Camera: ST2000XM
  • Exposure: 95:20:20:20