William Herschel discovered NGC 5605 = H III-120 = h1798 = h3569 on 11 May 1784 (sweep 211) and recorded "eF, pL, iR, rather brighter towards the following side." CH's reduction is 25 sec of RA east of MCG -02-37-003 = PGC 51492. JH made a single observation from Slough and measured a more accurate position (1' too far south). From the Cape of Good Hope, he recorded "F; pL; R; gvlbM; 90"."

300/350mm - 13.1" (6/18/85): fairly large, diffuse, weakly concentrated to a small brighter core, fairly low surface brightness.

Notes by Steve Gottlieb