E.E. Barnard discovered IC 1158 = Sw. X-33 on 7 July 1890 with the 12-inch refractor at Lick Observatory. While searching for Wolf's comet of 1884 he found a nebula described in his logbook as "vF, R, 1' dia, vgbM, an 8m star 22' exactly following." His rough position (no offsets) and the description clearly applies to this galaxy. Barnard found it again less than a month later (4 Aug), looking for d'Arrest's Comet! Lewis Swift made an independent discovery on 17 July and reported the discovery in his 10th list. Barnard never published the discovery or informed Dreyer, so Swift is credited with the discovery in the IC.

400/500mm - 17.5" (6/11/88): very faint, large, diffuse oval NW-SE. Several stars are nearby north and south including a mag 12 star 3.1' NE.

Notes by Steve Gottlieb