Messier Objects

M7: Open Star Cluster (Scorpius) RA: 17h 53.9m / DEC: -34° 47'.0
Instrument: 10-inch Starfinder

M7 is among the most impressive open star clusters in the night sky. This bright naked eye cluster can be found just northeast of the scorpion's stinger in Scorpius. My drawing is derived from a 36X view in the 10-inch Starfinder Newtonian. The cluster spreads across the entire 1.5 degree field. 60 stars ranging from 7th to 13th magnitude are shown. The cluster's visual magnitude of 3.3 makes it an impressive object under all but the worst skies. While in the area look for NGC 6453, a 10.2 magnitude globular star cluster positioned at the northwest edge of M7.

M6 M8-Lagoon Nebula


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Revised: February 14, 2002 [WDF]