William Herschel discovered NGC 922 = H III-239 = h2478 on 17 Nov 1784 (sweep 321) and logged "vF, S, near 1' diameter or more". John Herschel reported on on 20 Nov 1835 (sweep 646), "pB; R; gpmbM; 60" [diameter]".

200/250mm - 8" (1/1/84): fairly faint, even surface brightness, slightly elongated N-S. A mag 12.5 star is 2' NNW.

400/500mm - 17.5" (12/4/93): moderately bright, slightly elongated N-S, 1.2'x1.0', weak concentration, stellar nucleus with direct vision. A mag 12 star is 2' NNW.

Notes by Steve Gottlieb