SBIG ST-4000XCM6x600secDarks/Flats/Bias AppliedImager Temp -20CAPM/TMB 130/780
M2 (NGC 7089) is about 37,500 light-years away from Earth. At 175 light-years in diameter, it is one of the larger globular clusters
known. The cluster is rich, compact (Class II - the next most dense classification), and significantly elliptical. It is 13 billion years old - about the same as that of globular clusters M3
- and one of the older globulars associated with the Milky Way Galaxy.
M2 contains about 150,000 stars, including 21 known variable stars
. Its brightest stars are red and yellow giants
September 18, 2009