William Herschel discovered NGC 672 = H I-157 = h150 on 26 Oct 1786 (sweep 626) and logged "cB, cL, extended in the parallel, mbM, about 6 or 7' long, 3' broad." The galaxy was observed 7 times with the 72". On 26 Oct 1854, R.J. Mitchell recorded "A tolerably B ray, bM. The B portion is narrow, but I think F neby extends laterally; * south of centre and another fainter one sp center? [this may refer to an HII region]." I'm surprised, though, that IC 1727 was missed during these observations.

200/250mm - 8" (11/13/82): fairly faint, low even surface brightness, fairly large, diffuse. Two mag 13.5 stars lie NW and at the east edge.

8" (11/28/81): faint, fairly large, very diffuse, elongated ~E-W.

300/350mm - 13.1" (11/5/83): fairly bright, elongated 5:2 WSW-ENE, even surface brightness. Bracketed by a mag 13.5 star 2.2' WNW and a mag 13 star 3.2' E. Brightest in a group with IC 1727 8' SW.

600/800mm - 24" (12/28/13): at 225x appeared very bright, very large, elongated 5:2 WSW-ENE, mottled appearance. Contains a brighter, elongated "bar" that is slightly angled (roughly 7:2 E-W) to the major axis of the halo. Slightly brighter "patches" were visible just beyond the bar (on both the east and west side), probably where spiral arms attach to the bar. IC 1727 lies 8' SW.

Notes by Steve Gottlieb