DeLisle Stewart discovered IC 2522 = DS 322, along with IC 2523, on a plate taken in Apr 1900 at Harvard's Arequipa Station. He noted "vF, cL, R, * 8 n, susp."

400/500mm - 17.5" (4/15/93): fairly faint, large, round, diffuse, just a weak concentration. Forms a pair with IC 2523 4.5' S. Located 1.8' S of mag 9 SAO 200865.

Notes by Steve Gottlieb