by Tim Kerr
Messier 13
Hercules Globular Cluster in the Hercules Constellation
Date: 2009, March 21
Location: Hubert, North Carolina USA.
Camera: Canon EOS Digital Rebel XT/350D
Prime Focus on Celestron C6R-GT 6" f/8 Achro Refractor.
Exposures: ISO 400, 62x 60 second