Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 4  ·  NGC 6121
M4 Globular Cluster (NGC 6121), Antonis Karousis
M4 Globular Cluster (NGC 6121)
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M4 Globular Cluster (NGC 6121)

M4 Globular Cluster (NGC 6121), Antonis Karousis
M4 Globular Cluster (NGC 6121)
Powered byPixInsight

M4 Globular Cluster (NGC 6121)

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Description

That one is my first try capturing globular star clusters... Although star clusters are perfect targets for light polluted locations (like my backyard), I think I could increase the overall integration time!

The result is almost half an hour of stacked untracked frames.

Nikon D90

ISO 1000

Shutter Speed 10 seconds

Messier 4 or NGC 6121, is a globular star cluster located in the constellation of Scorpius, only 1.3 degrees west of Antares (α Scorpii). It measures 75 light-years across. The structure consists of 11th-magnitude stars. At least 43 variable stars have been observed within M4.

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