John Herschel discovered NGC 1823 = h2758 on 12 Nov 1836 and described "The most compressed part of a pF; L; branching cluster of stars 12...15m" His position is on the southeast side of the cluster. Hodge and Lucke (1970) note this open cluster in the LMC lies within the LMC O-association No. 18; the brightest star in the cluster is 13.9 mag.

600/800mm - 30" (11/6/10 - Coonabarabran, 264x): fairly bright irregular cluster with 8 or 9 resolved stars within 45". Five of the resolved stars are collinear on the west side oriented ~N-S. Second of three clusters with NGC 1813 4' WNW and S-L 200 4' SSE and the surrounding field is filled with a scattering of mag 12-13 stars and a large number of fainter stars (this is the stellar association LH 18). S-L 200 is the largest of the three clusters, 1.2'x0.6' extended N-S, with several stars resolved over a hazy background or emission glow and a detached group of 4 stars off the south end.

Notes by Steve Gottlieb