M 20 in Sagittarius

Updated : 28 September 2007

Click on image to get larger size (automatic resize in Internet Explorer)
m20_55sgclpRGBcaldebl_ddp_Sat_IP_PS.jpg (1350 kB)

  • CCD : ST10 NABG 1x1 binning
  • Exposure time : 55:55:55 min RGB (5 min individual exposures)
  • Date and Time : 29. August and 4. September 2007
  • Instrument : 14 cm TEC 140 Apochromat f/7
  • Focal length : 980 mm
  • FWHM : 2.5 arcsec
  • Filters : Astronomik RGB filter (6nm)
  • Image processing : sigma clip combine, darks
  • Problems/comments : Further processing in Imageplus (DDP) and Photoshop (levels, curve, shadow highlights). Imaged at IAS observatory, Farm Hakos, Namibia

back home