About 145
light-years in
diameter, M13 is composed of several hundred thousand
stars, with estimates varying from around 300,000 to over half a million. The brightest star in the cluster is a
red giant, the
variable star V11, also known as V1554 Herculis,=10.5px with an apparent visual magnitude of 11.95. M13 is 22,200–25,000 light-years away from
Earth, and the globular cluster is one of over one hundred that orbit the center of the Milky Way.Single stars in this globular cluster were first resolved in 1779 Compared to the stars in the neighborhood of the
Sun, the stars of the M13 population are more than a hundred times more densely packed. They are so close together that they sometimes collide and produce new stars. -Wikipedia
I shot this as part of my campaign to eventually shoot all the Messier objects, but I also just wanted to continue to test my widefield setup along with the ASI Air and AM5 on different targets. Different then the typical astrophotography target, globular clusters are easily recognizable through visual astronomy... the challenge is getting the images to to align with what your eye sees
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