Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205
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Messier 13, Kenneth Adler
Messier 13
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Messier 13

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Messier 13, Kenneth Adler
Messier 13
Powered byPixInsight

Messier 13

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More Backyard Astronomy 6/14/2021. This is my photograph of Messier 13. M13 is called The Great Globular Cluster in the Constellation of Hercules. It contains hundreds of thousands of stars. The cluster is 25,000 to 30,000 light years away and is about 145 light years across. Amateur astronomers consider M13 to be about the most beautiful Globular Cluster and is a favorite. The only cluster which is even more spectacular might be Omega Centauri which is the biggest and brightest globular cluster.

Nearby in the same Constellation is "the other" Globular Cluster M92. This poor little sister Cluster is often overlooked as it is outshined by its spectacular brother M13. M92 is one of the brighter clusters in the northern hemisphere and is 26,500 light years away.

The brightest and largest Globular Cluster is Omega Centauri which may contain 10 million stars.

The Constellation of Hercules is fairly easy to spot the four bright stars forming a trapezoid called The Keystone.

I had thought that the Constellation of Hercules was named after the Hercules who got shot in the ankle with an arrow. However, the Constellation is named after the Greek devine hero Heracles, who was the son of the Greek God Zeus. Hercules is the Roman equivalent of Heracles. Hercules is famous for his strength and adventures. I should have paid more attention in high school when we studied Homer's Illiad and the Odyssey 60 years ago. I digress.

Until next time,

Clear skies to you. Ken Adler

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Messier 13, Kenneth Adler