Lewis Swift discovered NGC 150 = Sw. VI-3 on 20 Nov 1886 with his 16" refractor. His position was 30 seconds of RA west of ESO 410-019 = PGC 2052. Herbert Howe measured an accurate position in 1899-00 using the 20" refractor at Chamberlin Observatory (repeated in the IC 2 notes). The error was also noted in the Harvard College Observatory NGC correction list. The galaxy was photographed by Harold Knox-Shaw at the Helwan Observatory between 1909-11 and described as a "two-branched spiral".

300/350mm - 13.1" (10/20/84): moderately bright, moderately large, elongated 2:1 WNW-ESE, weak concentration, irregular surface brightness [probably due to spiral arms], slightly mottled.

Notes by Steve Gottlieb