Heinrich d'Arrest discovered NGC 6411 on 27 Oct 1861 with the 11-inch refractor at Copenhagen. His position (measured on 4 nights) is accurate and noted the mag 12 star 6 seconds preceding and 30" south. The MCG declination is 30' too far south, and NGC 6411 is not referenced.

400/500mm - 17.5" (6/22/90): fairly faint, fairly small, oval 3:2 SW-NE, 1.1'x0.8', gradually increases to a very small bright core. A mag 13.5 star is 20" off the SW edge and 57" from the center.

Notes by Steve Gottlieb