Heinrich d'Arrest discovered NGC 3943 on 27 Apr 1865 with the 11-inch refractor at Copenhagen. His position, measured on 2 nights, matches CGCG 127-090 = PGC 37237 and he accurately placed the mag 13 star that precedes by 15.5 sec of RA.

400/500mm - 17.5" (4/7/89): faint, small, oval, small bright core. Located 6' NE of mag 7.3 SAO 82020. Located in a group with NGC 3937 9' NNW.

Notes by Steve Gottlieb