Glenn's Astrophotography




M13 is a globular star cluster in the constellation of Hercules and is at a distance of about 25,000 light years from Earth. Globular star clusters are spherical groups of several hundred thousand stars that occupy a halo region around the central bulge of spiral galaxies. M13 is one of many clusters in the halo around our own Milky Way galaxy. Globular clusters are thought to be among the oldest objects in the universe. In the cores of globular clusters, the stars are more than 500 times closer together than they are in the galactic disk area in which our own solar system resides.

Image capture and processing information:

Date/Location: July 08, 2007 Camp Telequa, Tiller, Oregon
Instrument: SBIG ST-2000XCM through an Orion 8 inch Newtonian reflector
Focal Ratio: f4.9 with Baader Coma Corrector
Guiding: Self-Guiding camera
Conditions: Moderately clear
Weather: 73 F, slight breeze
Exposure: 10 minute single exposure
Processing: Focused and captured with CCDOPS. Image processed using CCDOPS and Adobe Photoshop CS2