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A compact 5-panel folded field guide covering all 110 Messier Deep Sky Objects—star clusters, nebulae, and galaxies visible from the northern hemisphere. Includes eight detailed charts, coordinate and magnitude tables, observing history, and Messier Marathon info. Designed for amateur astronomers using telescopes as small as 3 inches. Laminated for outdoor durability.
Charles Messier compiled this catalog in the mid-1700s, making it the first of its kind and featuring the brightest DSOs accessible to small-scope observers. Iconic objects include the Pleiades, Andromeda Galaxy, Orion Nebula, and Beehive Cluster.
Folded: 4 × 8.5 inches. Expanded: 8.5 × 19.25 inches. Weather-resistant laminated construction.