William Herschel discovered NGC 910 = H III-571 on 17 Oct 1786 (sweep 614) and recorded "eF, stellar, not verified." His position was accurate despite the last comment. On the same sweep he discovered NGC 898.
300/350mm - 13.1" (10/20/84): fairly bright, small, round. Located in the core of AGC 347 with NGC 911 8.5' NNE and NGC 913 3.5' ESE.
13.1" (11/13/82): fairly faint, similar brightness to NGC 911 in the core of AGC 347.
600/800mm - 24" (11/23/19): at 375x; fairly bright, relatively large, round, 1.0'-1.2' diameter, strong concentration with a very bright core that increases to an intense nucleus. The halo is low surface brightness and fades out at the periphery, making it difficult to gauge the exact size. Located at the core of AGC 347 with several other members near including UGC 1866 4' NW and NGC 912 4' SE.
Notes by Steve Gottlieb