William Herschel discovered NGC 2251 = H VIII-3 = h395 on 26 Dec 1783 (very early sweep 67) and noted "a small cluster of very close stars, not very remarkable." His summary description (2 observatins) reads "an extended cluster of large scattered stars." His position falls just west of center of this cluster. On 8 Jan 1828 (sweep 118), John Herschel logged, "a large tract full of stars; v rich; place from working list."

400/500mm - 17.5" (3/12/94): about 40 stars mag 10.5-14 in an 11'x4' fairly rich string NW-SE. Includes about 10 brighter mag 11 stars. The brightest mag 9.5 star is part of a small, roundish subgroup on the west side and is a pleasing double with components mag 9.5/12 at 10". This subgroup has three brighter stars and 15 faint stars mostly west of the double. The main string is fairly uniform except for an empty 3' gap SE of the mag 9.5 star. Located 5' NW of the cluster is an isolated mag 10 star which appears to be a field star.

17.5" (2/1/92): 35 stars mag 10-14 in 12'x6' string NNW-SSE, bright, moderately large, fairly rich but not dense. Consists of 3 main subgroups. The western group is 2' diameter and includes a close double star 10/12 at 10". The NW group is 3' diameter and includes two mag 11 stars with three mag 13 stars between. The SE group is largest and includes 15 stars in a 6' string very elongated N-S with a close double star.

Notes by Steve Gottlieb