Albert Marth discovered NGC 2593 on 26 Jan 1865 and noted "eF, vS." His position matches UGC 4408.
400/500mm - 17.5" (1/1/92): faint, small, elongated 2:1 N-S, 0.8'x0.4', weak concentration. Located in the same field with NGC 2596 11' SE.
Notes by Steve Gottlieb