|
Date 2011 |
Location Mayhill, NM |
Software ACP, MaxIm DL, TheSky6 |
Mount Software Bisque Paramount ME |
Guide Atik 16IC, Astrodon MMOAG |
|
Optic OGS/RCOS 10" RC |
Camera Atik 11000C |
Filter OSC RGB |
Exposure 600s x 20 |
Process Astroart 5, PixInsight, Photoshop CS5 |
x
Billions and Billions.com/Hercules Cluster
Globular Cluster M13 in Hercules
is considered the finest 'Glob' in the northern hemisphere, second only to the magnificent Omega Centauri of the south. Discovered by Edmond Halley (comet fame) in 1714 in the Keystone of Hercules, it likely has over one million individual stars. Its distance from earth is estimated at 20,000 light years and the diameter, 160 light years across. Roughly 100 globular clusters of similar appearance surround our galaxy. They are ancient travelers, billions of years old and comprised of mostly metal-deficient stars near the end of their life. Note NGC 6207 at bottom left as well as several other tiny edge-on galaxies in the field. Click for a larger version or return to the Gallery