• Constellation: Hercules
  • Right Ascension: 16h 41m 41.24s
  • Declination: +36° 27′ 35.5″
  • Distance: 22,200

Messier 13, the Great Globular cluster located in the constellation of Hercules. It is one of the brightest and best know globular clusters in the northern hemisphere. The cluster has a diameter of around 145 light years and contains about 300,000 stars.

In this wide field view, many distant background galaxies are revealed.



  • Telescope: EDT 80mm Reftactor
  • Camera: ZWO A071 Color