By Sudhir Sharma | 2025-04-27
The Great Hercules Globular Cluster Star Cluster (NGC 6205, Messier 13)
On 04/26/2025 01:04 am by Tameem Altameemi | Website | United Arab Emirates
Captured from the sky of the United Arab Emirates, this image features the beautiful globular cluster Messier 13, also historically known as the Al-Jathi Cluster.
Located in the constellation Hercules, M13 lies about 22,200 light-years away from Earth and has an estimated age of 11.65 billion years.
It contains several hundred thousand ancient stars, densely packed into a region about 213 light-years across.
In the same field of view, the spiral galaxy NGC 6207 and the faint active galaxy IC 4617 are visible.
Key Facts:
Name: The Great Hercules Globular Cluster (Messier 13 - NGC 6205)
Type: Globular Cluster
Discovered: 1714 by Edmund Halley
Estimated Age: 11.65 billion years (Source)
Distance from Earth: 22,200 light-years
Calculated Diameter: 213 light-years
Apparent Magnitude: 6.0
Angular Size: ~33 arcminutes
IC 4617 Active Galaxy (near the cluster):
Type: Seyfert 2 Active Galaxy
Distance from Earth: 553 million light-years
NGC 6207 Spiral Galaxy (lower left of the cluster):
Type: Spiral Galaxy
Distance from Earth: 55 million light-years
Telescope: Explore Scientific 152mm David H. Levy Comet Hunter
Camera: ZWO ASI533MC Pro (cooled)
Mount: iOptron HAE43
Software: ASIAir+
Exposure: 30 x 60s images (total 30 minutes)
Filter: Optolong 2" L-Quad Enhance
Camera Temp: 0°C, Gain: 111
Pixinsight
Adobe Photoshop