John Herschel discovered NGC 3742 = h3350 on 21 Apr 1835 and recorded "pB, pL, R, glbM, 40"." His mean position from 2 sweeps matches ESO 320-006.

400/500mm - 18" (4/25/09): fairly faint, fairly small, elongated 3:2 WNW-ESE, ~45"x30". Contains a small, brighter, round core. Forms a pair with NGC 3749 4.8' SE. In a group with NGC 3783 43' ENE. The DSS image reveals large, sweeping spiral arms (not seen) that increase the overall size considerably.

Notes by Steve Gottlieb