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Messier 22 in Sagittarius


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About this observation
Paul Downing
Time of observation
19/06/2014 - 23:00
Observing location
Alpujarra, Spain
12.5" Planewave scope
QSI 683 CCD camera
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Messier 22  in the constellation of Sagittarius was the first globular cluster to be seen as such - i.e. a ball of stars.  The famous "Omega Centauri" was catalogued in the 2nd century A.D., but only as a star.  At a distance of 10,000 light years, M22 is one of the nearest globulars, with an absolute magnitude of -8.5, a luminosity of 210,000 suns, and a diameter of 70 light years.

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