Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  IC 4617  ·  M 13  ·  NGC 6205  ·  NGC 6207
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Messier 13, The Great Globular Cluster, Barry Wilson
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Messier 13, The Great Globular Cluster

Getting plate-solving status, please wait...
Messier 13, The Great Globular Cluster, Barry Wilson
Powered byPixInsight

Messier 13, The Great Globular Cluster

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Description

Messier is a well-known imaging target and has the unusual so-called "propeller" feature. From Astronomy.com, "In the mid-19th century, the observing assistants of William Parsons, Third Earl of Rosse, noticed three dark rifts crossing the interior of the Hercules Cluster (M13). They spied the feature through Lord Rosse’s 72-inch Leviathan reflector at Birr Castle in Ireland, but the feature — now popularly known as “the propeller” — can be seen through much smaller instruments. Yet the elusive detail continues to challenge and mystify visual observers today."

Data acquisition: Barry Wilson & Steve Milne
Processing: Barry Wilson

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Messier 13, The Great Globular Cluster, Barry Wilson

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Entre Encinas y Estrellas (e-EyE)