Nightscapes & Deep Sky Colors
Astrophotography © Brian A. Morganti
M15 - Globular Cluster
Globular Clusters are essentially islands of hundreds of thousands of stars that were formed at a similar time about 13 billion years ago---about the same that our galaxy formed.. These clusters orbit at the periphery of our galaxy, with almost 150 of them scattered around the Milky Way galaxy. M15 contains about 150,000 stars with a diameter of about 175 light-years. M15 has a very dense core of stars and is possibly harboring a black hole at its center. M15 is about 35,000 light-years from Earth. With a collective apparent magnitude of 5.80 and a size of roughly 23 arc-minutes, this globular cluster is easily visible with a small telescope.
Astrophotography - Nightscapes & Deep Sky Colors