M20 - Trifid Nebula

 
 
 
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  • RA: 18:02.6
  • Dec:  -23:02
  • Magnitude: 9.0
  • Distance: 5200 ly
  • Size:  28.0 arcmin
  • Constellation:  Sagittarius
  • Scope: 8" SCT at f/10
  • Autoguider:  ST-4 in faint mode
  • Sky conditions:  good transparency and good seeing
  • Film: Kodak Supra 400
  • Exposure:  30 and 60 minutes
  • Date:  May 25, 2003 and June 20, 2003
 
 
Comments:  The red emission nebula with its young star cluster near its center is surrounded by a blue reflection nebula which is particularly visible to the northern end.