William Herschel discovered NGC 2765 = H II-520 = h558 on 27 Jan 1786 (sweep 512) and recorded "vF, mE, easily resolvable. May be a patch of stars; the weather being too hazy to observe it well." His position (Auwers' reduction) was 1.7' north of UGC 4791. On 15 Mar 1830 (sweep 238), John Herschel wrote, "vF; pL gbM, but not to a nucleus".

400/500mm - 17.5" (2/1/92): fairly faint, fairly small, elongated 5:2 WNW-ESE, gradually brighter core but no sharp nucleus.

Notes by Steve Gottlieb