Target: M13 - Globular Cluster in Hercules
Orion 8" f/4.9
Multi-Purpose Coma Corrector
JMI EV-1n Focuser
Resurfaced: Spectrum Coatings Max "R" (EAL)
Camera: Canon 40D (modified)
Filter: IDAS LPS
Exposures: RGB: 19x240s (76min) @ ISO800
Framing: North is Up, 90% Crop
Location: Mocksville, NC
Start Time: 10:00PM
End Time: 1:00AM
Captured with Nebulosity, stacked using DeepSkyStacker, processed in Photoshop.Anacortes Telescope Picture of the Day, July 7, 2011
Messier 13 or M13 (also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster) is a globular cluster of about 300,000 stars in the constellation of Hercules.
M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.