M13 The Great Globular Cluster in Hercules, Lluis Romero Ventura

M13 The Great Globular Cluster in Hercules

Equipment

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Acquisition details

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Description

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.

Place: Àger-Lleida

Telescope: GSO RC14" Truss.

Mount: ASA DDM85 XL (unguided)

Camera: Moravian G2-8300 Focal reducer: AS CCDT67 0.67x

Dates: 30-May-2016

Exposures: L: 31x120 bin1 R:27x120 bin2 G:19x120 bin1 B:19x120 bin1

Software: Pixinsight

Cropped: 60%

SQM: 21.7

Comments

Histogram

M13 The Great Globular Cluster in Hercules, Lluis Romero Ventura