|M13 is certainly the most famous globular cluster in the sky of the
Northern Hemisphere. The visual appeal of a cluster like this is unmatched
for most deep sky objects. This sphere of over 100,000 stars looks something
like "spilled salt" in even relatively small telescopes. The stars in
a cluster like this orbit one another wildly as they are crammed into a ball
100 light years across. In addition to the number of stars, the ages of the
suns in this cluster are some of the oldest in the universe- perhaps 12-14
billion of years old! M13 is easily found in the constellation of Hercules
and can even be glimpsed with an unaided eye under dark skies. Also check
out the background galaxy
NGC 6207 in the same direction as M13. Globular clusters orbit the center
of the galaxy. M13 is currently about 22,000 light years away from us.
Click on image for larger version.
RC Optical Systems telescope Operating at f/5.5
Paramount ME Robotic Telescope Mount
SBIG ST10XME CCD camera with color filter wheel
Minimum credit line: Tom Bash and John Fox/Adam Block/NOAO/AURA/NSF
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