Albert Marth discovered NGC 6571 = m 364 on 27 Jul 1864 and noted "eF, vS, stell." His position is less than 1' due south of CGCG 142-010 = PGC 61504.
400/500mm - 17.5" (7/16/88): very faint, small, slightly elongated, broad concentration. First in the large NGC 6579/NGC 6580 group.
Notes by Steve Gottlieb