John Herschel discovered NGC 3573 = h3322 on 20 Apr 1835 and recorded "eF; R; glbM; 20"; precedes 3 stars 11 and 12 mag, nearly on the same parallel. His position is 1.3' north o fESO 377-022 = PGC 34005 and the description matches.

400/500mm - 16" LX200 (4/14/07): moderately bright, moderately large, elongated 2:1 ~N-S, bright core, very small bright nucleus, faint extensions. A string of three mag 11.5-12.5 stars oriented E-W follow with the closest star 2.3' E and a mag 14.5 star is at the east edge. Located on the north side of the NGC 3557 group (part of the Hydra-Centaurus Supercluster) in the NW corner of Centaurus near the Antlia border.

Notes by Steve Gottlieb