M13 (also called the Hercules Globular Cluster) is a globular cluster consisting of approximately 300,000 stars. It's about 25,000 light years away and was discovered in 1714 by Edmond Halley (of Halley's Comet fame). It can easily be seen with binoculars and small telescopes. In the lower right is NGC 6207, a 12th magnitude spiral galaxy.

Technical Information       
Date:                        May, 2014
Location:                 Green Valley, Arizona
Telescope:              Takahashi FSQ-106EDX
Camera:                  SBIG STT-8300M
Filters:                     Astrodon Gen 2
Mount:                     AstroPhysics 1200
Exposure:               LRGB = 860:120:120:120 minutes, all unbinned
Software:                Acquisition: Maxim DL 5, TheSkyX, Pinpoint, CCD Commander
                                 Processing: CCDStack, PhotoShop CS6 with various plugins

M13 (Hercules Cluster)