deep-sky
star cluster (globular)
M13 – Hercules Globular Cluster
M13, also known as the “Great Hercules Globular Cluster” is one of the most prominent and best known globular clusters of the Northern sky.
With an apparent magnitude of 5.8, it is just visible with the naked eye under good conditions.
Its diameter is about 145 light-years, and it is composed of several hundred thousand stars.
M13 is 25100 light years away from Earth
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Image information:
Object info
Name: M13 – Hercules Globular Cluster
Type: Star cluster (globular)
Constellation: Hercules
Distance: 25100 ly
Date & location
Date: June 1, 2011
Location: Landgraaf, The Netherlands
Equipment & optics
Total integration: 1h3m
Camera: SBIG ST-8300M
Optics: Orion Optics SPX 10″ Newton
Mount: Losmandy G-11 Gemini
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