Édouard Stephan discovered NGC 6321 = St II-13 on 14 Jul 1871. His micrometric position is very accurate.
400/500mm - 17.5" (8/1/89): faint, moderately large, round, almost even surface brightness. A mag 14 star is at the west edge 40" from center and a mag 13 star 1.0' SE of center.
Notes by Steve Gottlieb