John Herschel discovered NGC 4410 = h1256 on 18 Jan 1828 and recorded "eF; vL; R; gbM; 2.5' diameter." His position is 7 sec if RA too far west.

400/500mm - 17.5" (3/24/90): fairly faint, fairly small, elongated E-W, weak concentration. This double system (NGC 4410A and 4410B) was not resolved. (NGC 4410A is the brightest in a quartet with IC 790 1.9' NE and CGCG 070-079 4' ENE (not seen). NGC 4411A lies 9' S. IC 790 appeared very faint, very small, elongated E-W.

600/800mm - 24" (6/4/16): at 225x; NGC 4410 is a merged, interacting pair at 20" separation in a common halo. NGC 4410B, the brighter eastern component, appeared moderately bright, small, round, 20"-25" diameter (the halos overlap), very small bright core. NGC 4410A, the western galaxy, appeared fairly faint, small, round, 15" diameter, weak concentration, lower surface brightness than NGC 4410B.

IC 790 = NGC 4410C, located 1.8' ENE, appeared fairly faint, small, elongated 3:2 E-W, 24"x16", very small brighter nucleus. A very diffuse tidal plume (not seen) connects IC 790 with NGC 4410A/B. CGCG 070-079, 2.3' ENE of IC 790 (and also connected by a tidal plume), is faint, small, elongated 2:1 WNW-ESE, 24"x12".

Notes by Steve Gottlieb