William Herschel discovered NGC 2592 = H II-315 = h505 on 11 Mar 1785 (sweep 384) and recorded "F, S, R, bM, cometic or having a seeming nucleus." John Herschel logged it on 19 Feb 1827 (sweep 58) as "pB; R; vsbM to a *; 20"." and measured an accurate position. This galaxy was observed 14 times at Birr Castle and LdR (or assistants) thought it was a tight, unresolved cluster on several occasions!

400/500mm - 17.5" (1/1/92): moderately bright, small, round, sharp concentration with an unusually bright core for a small galaxy, stellar nucleus, small fainter halo. A mag 15 star is 1.0' W. Forms a pair with NGC 2594 5' SSE.

Notes by Steve Gottlieb