Stephane Javelle discovered IC 542 = J. 1-161 on 22 Apr 1892. His position is accurate.
600/800mm - 24" (2/8/18): at 375x; fairly faint, fairly small, elongated 3:1 E-W, fairly even surface brightness, 30"x10". A half-dozen mag 13-13.5 stars are within 4'.
Notes by Steve Gottlieb