M13 (NGC6205) The Great Globular Cluster in Hercules

July 18, 2003 0:57am ~ 1:11am EST
University of Maryland Observatory, College Park, MD USA

Celestron 14" Schmidt-Cassegrain Reflector f/11
SBIG ST-8 CCD Camera, Bessel V filter
1 x 15sec. + 3 x 20sec. + 1 x 25sec. exposures combined(using Mean) by AstroStack 2.1.0, false color