Lewis Swift discovered IC 830 = Sw. IX-35 on 8 Jun 1890 and reported "vF; vS; lE; stellar." His position was 1.6' too far southeast.

600/800mm - 24" (5/24/20): at 375x; fairly faint to moderately bright, fairly small, oval 3:2 NNW-SSE, 30"x20", broad concentration to a small brighter core and nucleus.

24" (6/3/19): at 322x; moderately bright, fairly small, the core is bright, slightly elongated, 15" diameter, increases to a stellar nucleus. The N-S extensions are much fainter and increase size to 30"x15". Member of a group (LGG 300) that includes NGC 4669, 4686 and 4675.

Notes by Steve Gottlieb