Wednesday, May 12, 2010

May 12, 2010

M11 - The Wild Duck Cluster

This is an open cluster that appears in the constellation Scutum (the Shield). The cluster is notable for being extremely compact (for an open cluster). It contains about 2900 stars. While it is visible in small telescopes and binoculars, a larger instrument is needed to resolve the cluster's individual stars.

This is a twelve minute exposure.

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