Albert Marth discovered NGC 6234 = m 318 on 17 Jun 1863 and noted "F, S, R." His position is 1' too far south.
400/500mm - 17.5" (6/8/91): very faint, very small, round, low surface brightness. Located 9.4' WNW of mag 8.8 SAO 121919. Member of a small group (USGC U779) with NGC 6230, which lies 22' NW.
Notes by Steve Gottlieb