William Herschel discovered NGC 7393 = H II-453 = h2187 on 5 Oct 1785 (sweep 455) and recorded "F, pL, E in the parallel [E-W], r." JH logged it as "eF; R; vgbM; sky dull." and measured an accurate position.

400/500mm - 17.5" (9/15/90): fairly faint, fairly small, elongated 3:2 E-W, broad concentration.

Notes by Steve Gottlieb