Lewis Swift discovered NGC 6542 = Sw. IV-65 on 22 Jul 1886 and recorded "eF; S; eE; coarse D[ouble] * sp points to it." His position matches UGC 11092 and his description applies. The coarse double star is 8' southwest.
400/500mm - 17.5" (6/11/88): faint, small, very elongated WNW-ESE, brighter core, faint stellar nucleus. Located 3.9' SE of a mag 10.5 star.
Notes by Steve Gottlieb