Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  Hercules globular cluster  ·  IC 4617  ·  M 13  ·  NGC 6205
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M13 (Hercules Globular Cluster), Joel Shepherd
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M13 (Hercules Globular Cluster)

Getting plate-solving status, please wait...
M13 (Hercules Globular Cluster), Joel Shepherd
Powered byPixInsight

M13 (Hercules Globular Cluster)

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Description

Good ol' Messier 13: a ball of several hundred thousand stars, some of which are as old as 12-13 billion years, located about 22,000 light-years away in the constellation Hercules.

This took a relatively light hand processing-wise: the usual noise reduction and a little bit of unsharp mask, but that's about all. PixInsight's Arcsinh Stretch worked well on both the RGB and synthetic luminance.

Around the time of the summer solstice, Seattle only gets 90 minutes or so of true darkness, so targets have to be bright and/or a number of nights are required to get much usable data. So, M13 is a convenient target for this time of year, though it took three nights to scoop up as much data as one could in one evening in the winter.

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