Heinrich d'Arrest discovered NGC 4926 on 6 Apr 1864 with the 11-inch refractor at Copenhagen. His position (measured 4 times over 3 nights) is accurate and he noted the two mag 12 stars ~4' preceding.

300/350mm - 13.1" (5/14/83): faint, small, round. Located 17' SSE of NGC 4921 and 16' SE of NGC 4911 in AGC 1656.

600/800mm - 24" (5/20/17): at 375x; fairly faint to moderately bright, round, ~40" diameter, fairly high surface brightness, small bright core increases to a stellar nucleus. Two 12th magnitude stars lie 4' W and 4' WSW. NGC 4926A lies 3.5' NE. This companion (both are members of the Coma galaxy cluster) appeared faint to fairly faint, small, slightly elongated E-W, 25"x20", slightly brighter core, quasi-stellar nucleus.

Notes by Steve Gottlieb