John Herschel discovered NGC 3305 = h3277 on 24 Mar 1835 and logged "vF; S; R. The 2nd of a group scattered over more than one field." HIs position matches ESO 501-030 = PGC 31421.

300/350mm - 13.1" (2/23/85): faint, very small, round, no details. Located ~15' N of NGC 3308 in AGC 1060.

600/800mm - 24" (3/28/17): fairly faint, fairly small, round, 0.6' diameter, small brighter core, stellar nucleus. A mag 12/12.5 double star at ~7" separation is 1.6' W. Located 17' N of NGC 3308 and 20' NW of naked-eye mag 4.9 HD 92036

Notes by Steve Gottlieb