John Herschel discovered NGC 7547 = h2218 on 26 Aug 1827 and simply noted "the np of 2 [with NGC 7550]. His single position is pretty accurate so there is no doubt with the identification. Herman Schultz measured an accurate micrometric position at Uppsala.

400/500mm - 17.5" (9/7/96): faint, small, elongated 2:1 E-W, weak concentration with a slightly brighter rounder core. First of five in HCG 93 with NGC 7550 3.0' ESE.

17.5" (9/23/89): faint, small, oval ~E-W, weak concentration. First of three with NGC 7549 5.2' NE and NGC 7550 3.0' E in the HCG 93.

600/800mm - 24" (12/28/13 and 9/27/19): at 282x appeared fairly faint to moderately bright, moderately large, elongated 2:1 or 5:2 ~E-W, 45"x20", moderate concentration to a brighter core. First in the HCG 93 quintet.

24" (12/1/13): at 375x appeared fairly faint, moderately large, elongated 5:2 ~E-W. Strongly concentrated with a nearly round, small bright core. First of 5 in HCG 93, with brighter NGC 7550 3.1' ESE.

Notes by Steve Gottlieb