Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  M 13  ·  NGC 6205  ·  NGC 6207
M13 Globular Cluster, Lluis Romero Ventura
M13 Globular Cluster
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M13 Globular Cluster

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Description

Messier 13 (M13), also designated NGC6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.

M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.

M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is a red giant, the variable star V11, with an apparent visual magnitude of 11.95. M13 is 25,100 light-years away from Earth.

Location: Astrosirius obervatory Àger-Lleida

Date: 07/05/2015

Telescope: Takahashi Epsilon 180 f/2.8

Mount: Losmangy G11 with Gemini II

Camera: Moravian G2 8300

Exposure: L: 20x60sec R:8x60sec G:8x60sec B:10x60sec

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M13 Globular Cluster, Lluis Romero Ventura