
March 2000: Melotte 71/72
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The open clusters Melotte 71 (left) in Puppis and Melotte 72 (right) in Monoceros. While not as spectacular as some neighboring clusters, these objects are nonetheless interesting. DSS/POSS photos.
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This month's objects are "off the beaten path" and, while not as dazzling as some of the other winter clusters, offer an interesting change of pace. Located less than 1.5° south-southwest of Alpha Monocerotis, Melotte 72 is the more challenging of the two. In both 8- and 12-inch scopes I noted this cluster to be distinctly triangular, with a line of stars meandering northward from the apex of the triangle. Using a 12-inch scope, I counted at least 60 stars.
Melotte 71, on the other hand, is an easy target in almost any scope. Lying 1.5° south of Mel 72, this cluster contains nearly 100 stars and is about ten arc-minutes across. The cluster appears to be slighly compressed toward the center.