M13 – Great Cluster in Hercules

I am sure you all have recognized this, its the Great Cluster in the Constellation Hercules. Its photographed by Mr. Saad Abbasi, an enthusiast Astro Photographer from Pakistan.

A 48 minute exposure generated this image.

M13 by Saad Abbasi

A full resolution version of this image can be found here

M13 or Messier 13 is a globular cluster in the Constellation Hercules (Hero). Globular clusters are large collection of stars in which gravity binds all the stars to form a circular shape (contrary to Open Cluster in which stars are loosely bound). M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764 in his famous Messier Catalogue.

Location of M13 in Constellation Hercules

M13 lies at a distance of 25.1 kly (Kilo Light Years) away from the Earth. Its total mass is about 1036 KG and its estimated age is nearly 1.4 × 1010 years.


    • Amjad Nizamani on July 1, 2010 at 5:12 pm
    • Reply

    Great work by Saad.
    I heard that its the first time that any Pakistani have photographed this cluster.

    • Ali on July 1, 2010 at 11:56 pm
    • Reply

    Saad strikes again.

    • Rukhama on July 7, 2010 at 5:28 pm
    • Reply

    i ve become a fan of u people…. amazing work…. keep it up….

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