Butterfly Cluster M6

One of the southernmost objects in the Messier catalog is the open star cluster M6 in the constellation Scorpius. The cluster has its own name, "Butterfly," and indeed, the bluish stars of the cluster form a fairly recognizable pattern of this insect's wings and antennae. Due to its large negative declination (-32 degrees), M6 is poorly accessible for observation in the Northern Hemisphere—the object's altitude during imaging was only 6 degrees above the horizon. Balcony in Kharkiv, red zone of light pollution.