John Herschel discovered NGC 6156 = h3632 on 24 Apr 1835 and logged "pF; lE; glbM; 50" long." A second observation called this galaxy "pF; R; gpmbM; 45"; in a field full of small stars."

300/350mm - 14" (4/3/16 - Coonabarabran, 178x): fairly bright, moderately large, slightly elongated E-W, 0.8'x0.6', high but irregular surface brightness, slightly brighter core. Appears brightest, though, at the west end; either a faint star is superimposed or perhaps a knot in the galaxy. Situated in a very rich star field with a mag 11 star 1.7' NE.

Notes by Steve Gottlieb