M 13 – Her

M 13

M13 (more data), 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. It is one of th emost beautiful objects one can hope to observe in the sky. It was discovered by Edmond Halley in 1714 and catalogued by Charles Messier on June 1, 1764.

A total of 40 exposures, with 90 seconds of integration each and taken with the Planewave 17 unit, were averaged. Images were unguided, completely trusting the Paramount ME mount. The CCD camera is a SBIG STL-6303E. The image scale is of 0.63 “/pixel.

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