Heinrich d'Arrest discovered NGC 4848 on 21 Apr 1865 with the 11-inch refractor at Copenhagen. His position, measured 3 times, is accurate.
400/500mm - 17.5" (4/21/90): faint, small, very elongated 4:1 NW-SE, even surface brightness. Member of AGC 1656.
Notes by Steve Gottlieb