William Herschel discovered NGC 7507 = H II-2 = h2211 = h3974 on 30 Oct 1783 (#2 sweep discovery). He made a total of 3 observations and noted on 1 Sep 1785 (sweep 430), "pB, S, irr figure, mbM." JH made observations both at Slough and at the CGH, where he logged "B; R; psvmbM; 60"."

200/250mm - 8" (7/24/82) : fairly bright, small, small very bright core.

400/500mm - 17.5" (10/13/90): bright, fairly small, round, unusually bright compact core, stellar nucleus. Located 6' NW of a mag 10 star. NGC 7513 lies 18' NE.

Notes by Steve Gottlieb