Heinrich d'Arrest discovered NGC 5681 on 1 May 1865 with the 11-inch refractor at Copenhagen. His single position is just off the west side of UGC 9393.
400/500mm - 17.5" (6/8/02): faint, small, round, 0.5' diameter. Seeing too poor for any details. Located 4.4' SW of a mag 10.4 star and 50' ENE of NGC 5665.
Notes by Steve Gottlieb