William Herschel discovered NGC 7492 = H III-558 = h2208 on 20 Sep 1786 (sweep 595) and recorded "eF, cL, iR. By changing and wiping the eye glasses, I saw it with both so as to leave no doubt. 5 or 6' dia." JH called this cluster "eF; vL; 2 or 3'; the faintest thing imaginable; half way between two coarse double stars in the same parallel."

200/250mm - 8" (8/2/81): very faint, diffuse, moderately large, no resolution. Very low surface brightness for a NGC globular and difficult with this aperture.

400/500mm - 17.5" (8/1/86): faint, large, round, diffuse, no resolution.

600/800mm - 24" (11/24/14): picked up at 200x as a faint, large, low surface brightness glow with a very weak concentration, 4'-5' diameter. At 375x, a few resolved stars shone steadily and quite a number popped in/out view consistently. Perhaps two dozen were intermittently resolved, though the surface was too lively (particularly with averted vision) to count reliably. These are the brightest red giant members and range from mag 15.5 to 16+.

Notes by Steve Gottlieb