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Star Cluster
Stars in Lagoon Neb
47 Tucana
Cat's Eye
M2 Cluster
NGC6352 in Ara
NGC6397 in Ara
Sagittarius Cluster
NGC6541 in Cra
Omega Centauri
NGC6752 in Pav
Pegasus Cluster
This is not to be mistaken for 'Hercules Cluster - Abell 2151' which is a cluster of about 75 bright Galaxies about 500 million light years away. The Globular Cluster is the most prominent in the northern half of the sky. It is nearly a perfect sphere of stars. At 165 light years diameter, you are looking at light that left the cluster 23,000 years ago. In 1974, M13 was chosen by Carl Sagan/Frank Drake as a target for one of the first radio messages addressed to Extra Terrestials sent by the huge Arecibo Telescope.