John Herschel discovered NGC 6545 = h3727 on 20 Jun 1835 and recorded "eeeF, vvvS, R, 4". This is the smallest nebula I recollect to have seen. Its light is not greater than that of a *14m. A diagram made for security of finding it again. See figure 16, Plate VI." His position is a perfect match with ESO 103-006, though this galaxy is not especially small on the DSS. Perhaps he only noticed a very small brighter nucleus. Joseph Turner also sketched this galaxy with the Great Melbourne Telescope (plate VII, figure 77). RNGC misclassifies this object as nonexistent; "not found, Sulentic".

600/800mm - 25" (4/5/16 - Coonabarabran, 318x): fairly faint or moderately bright, small, round, 24" diameter, contains a small brighter nucleus. The field is rich in faint stars with four mag 13-15 stars in a small quadrilateral close east (sides 30"-50") and a mag 15 star is at the southwest edge. In the field is a mag 9.7 star 4' S and a mag 10 star 6.7' NE. NGC 6545 resides 14' SW of mag 6.5 HD 166251.

Notes by Steve Gottlieb