John Herschel discovered NGC 1920 = h2833 on 2 Nov 1834 and observed on at least seven different sweeps! On the initial observation he logged "pB, S, R, vgbM, 20"." The remaining observations were fairly similar, though his size estimates ranged up to 60" and 2' across. NGC 1911 (seen on only 1 sweep) is possibly a duplicate (essentially an 8th observation) -- though the RA is off by 1 min 20 sec.

300/350mm - 13.1" (2/20/04 - Costa Rica): this HII region (LMC-N38) appeared fairly faint, fairly small, round, 35" diameter, smooth glow. Located ~3' NE of a line of three mag 11-11.5 stars. NGC 1902 lies 16' NW.

600/800mm - 24" (11/18/12 - Magellan Observatory, Australia): bright, high surface brightness HII region, relatively large, round, ~50" diameter. One or two stars are resolved within the glow. NGC 1919 lies 6' SSW.

Notes by Steve Gottlieb