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Holiday setting

Rod Pommier, taken from Portland, Oregon

The Christmas Tree Cluster is an open cluster of stars in Monoceros the Unicorn, but its name refers to the tree-like shape of the surrounding nebulosity. The cluster is also associated with the smaller Cone Nebula (NGC 2264), which lies at the top of the “tree.” The imager took 8 hours of Hα exposure and 2⅔ hours of additional data in LRGB filters.