M22 (NGC 6656), The Brightest Messier Globular (Ruben Barbosa)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: M 22 · NGC 6656

M22 (NGC 6656), The Brightest Messier Globular, Ruben Barbosa

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M22 (NGC 6656), The Brightest Messier Globular

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M22 (NGC 6656), The Brightest Messier Globular

* Image Acquisition by Jim Misti.

* Processing: Ruben Barbosa.

"Se tiveres uma estrela que confies, pede-lhe luz."

Messier 22 or M22, also known as NGC 6656, is an elliptical globular cluster of stars in the constellation Sagittarius, near the Galactic bulge region. It is one of the brightest globulars that is visible in the night sky. The brightest stars are 11th magnitude, with hundreds of stars bright enough to resolve with an 8" telescope.

It contains over 70,000 stars, estimated to be 12 billion years old and has an apparent diameter similar to that of the full moon.

M22 is one of the nearer globular clusters to Earth at a distance of about 10,600 light-years away. It spans 32' on the sky which translates to a spatial diameter of 99 ± 9 light-years. 32 variable stars have been recorded in M22. It is projected in front of the galactic bulge and is therefore useful for its microlensing effect on the background stars in the bulge.

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3. Star Clusters & Comets

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic success
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Astrometry.net job	7091100
PixInsight job	n/a
PixInsight queue size	n/a
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M22 (NGC 6656), The Brightest Messier Globular

M22 (NGC 6656), The Brightest Messier Globular

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M22 (NGC 6656), The Brightest Messier Globular

M22 (NGC 6656), The Brightest Messier Globular

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