How to Observe Clusters

Clusters are large groups of stars. There are two types of clusters globular clusters which, are tight groups of hundreds to millions of old stars which are gravitationally bound and open clusters which, are smaller and more loosely clustered groups of stars.

Star clusters are among the most spectacular objects that amateur astronomers can observe, with the added benefit of being easily visible even in light-polluted skies.

Try these Clusters

The globular clusters that are found in hercules are some of the best examples of such clusters in the night sky.

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Open clusters are good targets in even light polluted skies, and being situated in the summer triangle make excellent evening targets in even the lighter summer months.

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Open clusters are impressive but two clusters together are doubly so.

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While the Open Cluster M103 isn't the most spectacular it is one of the easiest to find.

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