DeLisle Stewart discovered IC 4739 = D.S. 489, on a plate taken 20 Jul 1901 at Harvard's Arequipa Station in Peru. He noted "eeF, eS, eF * inv."

600/800mm - 25" (10/16/17 - OzSky): at 397x; faint, small, round, 20" diameter, low even surface brightness. Forms a pair with IC 4738 2.9' W. A triangle of mag 10-11 stars is just south of IC 4738. Outlying member of the Pavo II cluster = ACO S805.

Notes by Steve Gottlieb