Ralph Copeland, while an assistant at Birr Castle, discovered NGC 3750 and 2 other members of "Copeland's Septet" on 9 Feb 1874. He noted "pB; lbM; * in Pos 23.8°, distance 109.3"." and labeled it Epsilon on the constructed sketch made on 13 Apr 1876. See NGC 3753.

400/500mm - 17.5" (5/11/96): faint, very small, round, very small bright core. First of three in Copeland's Septet in a tight trio with NGC 3753 just 40" NE and NGC 3754 1.0' NE.

17.5" (3/19/88): fourth of 7 in Copeland's Septet. Very faint, very small, round. Located just 39" SW of brighter NGC 3753.

900/1200mm - 48" (4/16/15): moderately bright, small, round, very small bright core, high surface brightness, 18" diameter. First in a striking trio with spirals NGC 3753 40" NE and 3754 1.0' NE.

Notes by Steve Gottlieb