M 3

  • Date: February/March 2008
  • Exposure: 2.1 hours LRGB (80:14:14:21 min.)
  • FWHM: 2.7 – 3.2 arcsec
  • Additional notes:
  • Telescope: 18” f/3.7 Newtonian
  • Mount: Heavy Forkmount
  • Camera: SBIG ST10-XME
  • Filters: Astronomik Typ II.c LRGB