This is the Great Globular Cluster in Hercules. It is about 25,000 light years away with a diameter of about 84 light years.
Date: April 5, 2011
Location: Rancho Hidalgo, NM
Telescope: TEC-140 (F7)
Camera: SBIG ST-8300M
Mount: AP900 FTO
Luminance: 10x3 minutes
Red: 6x5 minutes (unbinned)
Green: 6x5 minutes (unbinned)
Blue: 6x5 minutes (unbinned)