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What's in the Sky?

Wednesday 19th of June

M10 Globular Cluster
Globular cluster M10 lies in the constellation of Ophiuchus. This is a very bright cluster with a central region that appears slightly pear-shaped.

This cluster looks very much like many of the other bright examples in the Messier catalogue. Though often overlooked, this one and M12 are spectacular jewels in the direction of Ophiuchus. From our vantage point we look at these clusters just over (north) of the galactic plane. M10 is estimated to be 16,000 light years away (perhaps 70 light years in diameter).

With a visual magnitude of 6.6 and an apparent diameter of 15 arc minutes, this is one of the best clusters to be viewed with both binoculars and small telescopes.

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