M80 - Globular Cluster in Scorpius
A small but bright cluster, discovered nearly simultaneously by Messier and Mechain.


  • RA:16:17
  • Dec: -22:59
  • Size: 8.9'
  • Magnitude: 7.3
  • Distance: 27,400 ly
  • Constellation: Scorpius
  • Millennium Star Atlas: Vol. III, p. 1398
  • Scope: 8" SCT at f/11
  • Autoguider: ST-4 autoguider in faint mode
  • Sky conditions: Very transparent, excellent seeing and cold
  • Film: Fuji Super G 800+
  • Exposure: 20 minutes
  • Date: 6-14-99

After passage of a cold front and coverage of the area by an unusually cold and stable airmass for this time of year, I decided to shoot this cluster while warming up for the main event, M20.


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