Édouard Stephan discovered NGC 6233 = St XI-51 on 12 Jul 1880 and recorded "pF, S, R, gbM." His position is accurate.
400/500mm - 17.5" faint, small, almost round, gradually increases to a small bright core.
Notes by Steve Gottlieb
Édouard Stephan discovered NGC 6233 = St XI-51 on 12 Jul 1880 and recorded "pF, S, R, gbM." His position is accurate.
400/500mm - 17.5" faint, small, almost round, gradually increases to a small bright core.
Notes by Steve Gottlieb