William Herschel discovered NGC 7335 = H III-166 = h2174 on 13 Sep 1784 (sweep 269) he recorded "eF, vS, E, between 4 & 5' distant from the former [NGC 7331] and north following it." JH reported this galaxy as "eF; it is nf from I. 53 [NGC 7331]; pos by micrometer = 61.8°; Delta RA = 14.5 seconds."
200/250mm - 8" (8/28/81): extremely faint, very small, requires averted.
300/350mm - 13.1" (9/29/84): easily the brightest and largest of the companions to NGC 7331. Fairly faint but easily visible with direct vision at 220x, gradually increases to center, elongated NNW-SSE.
13.1" (7/27/84): fairly faint, elongated NNW-SSE, broad concentration. Located 3.6' E of the center of NGC 7331. Extremely faint NGC 7336 is 2' NNE.
400/500mm - 17.5" (8/27/87): fairly faint, bright core, elongated 5:2 NNW-SSE, small bright core. This is the brightest and largest of the four following companions of NGC 7331 located 3.5' ENE of center. A mag 14 star is 1.3' NE. Extremely faint NGC 7336 is 2.1' NNE.
17.5" (9/14/85): fairly faint, bright core, very elongated NNW-SSE.
600/800mm - 24" (7/21/12): at 322x was moderately bright and large, elongated 5:2 NNW-SSE, ~50"x20", relatively large bright oval core that gradually increases to the center. This is the brightest of the four "companions" to NGC 7331 with the faintest galaxy, NGC 7336, situated 2.1' NNE. The quartet is actually far in the background (8x the redshift) of NGC 7331, at a similar redshift as Stephan's Quintet with the exception for NGC 7320, which has a similar redshift as NGC 7331.
900/1200mm - 48" (10/24/14): at 488x; fairly bright, moderately large, elongated nearly 5:2 NNW-SSE, 0.9'x0.35'. Contains a very bright core.
Notes by Steve Gottlieb