M13 Hercules Globular Cluster in OSC (Kenneth Lim)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Hercules Globular Cluster · IC 4617 · M 13 · NGC 6205

M13 Hercules Globular Cluster in OSC, Kenneth Lim

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M13 Hercules Globular Cluster in OSC

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M13 Hercules Globular Cluster in OSC

I captured M13 with a quad-band filter (Triad Ultra) to reduce light pollution and processed the image by separating the bright core from the cluster to reduce the intensity of the core. M13 is about 23,000 light-years away from the Earth and has about half of a million stars.

While I was reading M13 description from the on-line source (Wikipedia), I learned followings:
1. Astronomers found 157 globular clusters in the Milky Way
2. The clusters are located in the outer spheroidal of the Milky Way and orbit the galactic core
3. From the distance to the clusters, we can see the position of our Sun in Milky Way
4. Globular clusters are the oldest object in the galaxy (M13 is 11.65 billion years old)

The origin of globular clusters are unclear.
- The stars in clusters are not formed at the same time and have differing compositions
- Some may be remnants of smaller galaxies captured by the Milky Way

Kenneth Lim

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Status	Basic success
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Astrometry.net job	8577524
PixInsight job	n/a
PixInsight queue size	n/a
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M13 Hercules Globular Cluster in OSC

M13 Hercules Globular Cluster in OSC

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M13 Hercules Globular Cluster in OSC

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