Messier 13 - 24RC Carbon Truss Ritchey-Chretien


M13 - Globular Star Cluster

(click image for full resolution)

Distance: 25 thousand light years
Telescope: 24-inch RCOS
Camera: SBIG STL11000

Custom Scientific Filters
Exposures: 25:25:25 in R:G:B filters
Total Exposure Time: 75 minutes

Adam Block / Mount Lemmon Sky Center / University of Arizona