Celestial hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  M 15  ·  NGC 7078
Messier 15, Don Curry
Messier 15
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Messier 15

Messier 15, Don Curry
Messier 15
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Messier 15

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Description

M15 is an estimated 13.2 billion years old in the constellation Pegasus, and is estimated to be one of the oldest globular clusters. The cluster is about 33,000 light years from Earth and has an absolute magnitude of-9.2 which translates to a luminosity 360,000 times that of the Sun. Its core has undergone a contraction known as core collapse and it has a central density cusp with an enormous number of stars surrounding what may be a central black hole.

Messier 15 also contains 112 variable stars, 8 pulsars, and a double neutron star system.

This was imaged from my backyard and not a dark site; but luckily my neighbor kept most their lights off which did help. Settings for my Canon 6D was at ISO 800 and subs were kept low to keep the core from blowing out.

Please click on image to see enlarged full resolution.

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Messier 15, Don Curry

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