Heinrich d'Arrest discovered NGC 535 on 31 Oct 1864 with the 11-inch refractor at Copenhagen and recorded "eF, vS, 1st of 3 in a line [with NGC 541 and 545 (double)]".

300/350mm - 13.1" (9/22/84): extremely faint, elongated SW-NE.

400/500mm - 17.5" (9/19/87): faint, small, oval SW-NE, weak concentration. In the central core of the AGC 194 cluster on line with NGC 541 3.8' NE and NGC 545/NGC 547 8' NE.

Notes by Steve Gottlieb