M2 (NGC 7089)

M2 is west of alpha Aqr a little over two binocular fields, and north of beta (which is barely in the same field): binoculars.

M2 is a very rich and concentrated globular cluster readily enjoyed with binoculars, and indeed even the naked eye under ideal conditions, as it has a visual magnitude of 6.5. It's best studied with a large telescope to resolve its members.

The cluster is one of the largest known, as well as one of the oldest at 13 billion years old. It contains about a hundred fifty thousand stars, and is 37,000 light years away.

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1999-2014 by Richard Dibon-Smith.