Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205
M13 with a Schmidt-Newtonian and Star Mask, Tommy Mastro
M13 with a Schmidt-Newtonian and Star Mask
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M13 with a Schmidt-Newtonian and Star Mask

M13 with a Schmidt-Newtonian and Star Mask, Tommy Mastro
M13 with a Schmidt-Newtonian and Star Mask
Powered byPixInsight

M13 with a Schmidt-Newtonian and Star Mask

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Description

The Great Globular Cluster in Hercules is one of the brightest globular star clusters in the northern sky. Telescopic views reveal the spectacular cluster's hundreds of thousands of stars. At a distance of 25,000 light-years, the cluster stars crowd into a region 150 light-years in diameter. Approaching the cluster core upwards of 100 stars could be contained in a cube just 3 light-years on a side. For comparison, the closest star to the Sun is over 4 light-years away. Along with the cluster's dense core, the outer reaches of M13 are highlighted in this sharp color image. The cluster's evolved red and blue giant stars show up in yellowish and blue tints.

~NASA

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M13 with a Schmidt-Newtonian and Star Mask, Tommy Mastro