John Herschel discovered NGC 7660 = h2240 on 5 Sep 1828 and recorded "F; vS; psmbM; 6"; almost stellar; a star 10m preceding; dist 1' in parallel." His position is accurate.
400/500mm - 17.5" (9/23/89): faint, small, slightly elongated SSW-NNE, small bright core. A mag 11.5 star is 1.7' W of center.
Notes by Steve Gottlieb