William Herschel discovered NGC 4545 = H II-850 = h1346 on 20 Mar 1790 (sweep 954) and recorded "pB, pL, iR, vgbM, r." His position is 2' too far north. JH made a single interesting description, "vF; L; wedge shaped, or has a vF * nf, which gives it a distorted appearance."

400/500mm - 17.5" (4/15/93): fairly faint, moderately large, round, about 2' diameter, broad weak concentration. A mag 14.5 star is just off the NNE edge of the halo 1.0' from center.

Notes by Steve Gottlieb