John Herschel discovered NGC 3378 = h3296 on 1 Feb 1835 and noted "pB; R; bM. Out of limit of sweep. Place rough. He measured a more accurate position on 3 later sweeps.
400/500mm - 18" (3/28/09): faint, fairly small, round, 30" diameter, very weak concentration.
Notes by Steve Gottlieb