William Herschel discovered NGC 5452 = H III-947 = h1747 on 20 Dec 1797 (sweep 1074) and noted "vF, cL, iF, a very lbM. A pretty B star just north of it. CH's reduced position is 30 tsec east of UGC 8867.

JH recorded "eF; pL; R; vgvlbM; 35". RA precarious, owing to a great extra meridian correction." His RA was 3 tmin too large, but that's the one used in the GC and NGC.

400/500mm - 17.5" (5/22/93): faint, moderately large, slightly elongated, 1.5' diameter, low even surface brightness. A mag 13 star is 1' N. A nice double star ∑1798 = 8.1/9.9 at 7" lies 11' N.

Notes by Steve Gottlieb