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The Peterson Stars and Planets Field Guide defines a globular cluster as "a spherical grouping of stars of a common origin; globular clusters and the stars in them are very old."

For many amateurs, globular clusters represent some of the most visually appealing deep sky objects. This observing program, based on a list compiled by Joe Goss, concentrates on globs - a total of 50 gems. The table below includes name, constellation and visual magnitude.

Your observing log book should contain date, time, seeing conditions, object description and equipment used.


The Globular Cluster Catalog

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