NGC 660

  • Date: 29 September – 1 October 2011
  • Exposure: 10.3 hours LRGB (296:76:95:152 min.)
  • FWHM: 2.1 arcsec
  • Additional notes: subs 37×8:19×4:19×5:19×8 min., all 1×1 bin
  • Telescope: 18” f/4.6 Newtonian
  • Mount: Heavy Forkmount
  • Camera: SBIG ST10-XME
  • Filters: Astronomik Typ II.c LRGB