M 42

  • Date: September 2011
  • Exposure: 1.9 hours LRGB (70:15:15:15 min.)
  • FWHM: 2.8 arcsec
  • Additional notes:
  • Telescope: 10” f/8 Ritchey-Chrétien
  • Mount: Gemini G53f
  • Camera: ALccd9
  • Filters: Astronomik Typ II.c LRGB