John Herschel discovered NGC 7768 = h2273 on 5 Sep 1828 and recorded "vF; S; irreg fig; appears by glimpses to contain a vF double *, but it is a nebula." His single position is accurate, although he missed the fainter nearby members of the cluster that were discovered at Birr Castle.

400/500mm - 17.5" (11/6/99): the brightest member of AGC 2666 is faint, small, round. A mag 14 star is attached at the west end of the halo. Appears slightly elongated WSW-ENE, 35"x25". Located 2.6' SW of mag 10.5-11.0 GR Peg. A mag 13 star lies 1.1' SE of center. The unusual collisional ring galaxy MCG +04-56-014 lies 9' N and a number of very faint NGC galaxies are nearby.

17.5" (7/20/90): fairly faint, small, round, fairly high surface brightness. A mag 13.5 star is at the west end 12" from the center. This is the brightest galaxy in AGC 2666 with NGC 7767 3.6' S, NGC 7765 1.7' NW, NGC 7766 1.4' SSW. Also MCG +04-56-019 lies 4.3' N (not seen). Located 2.6' WSW of a mag 10.5 star (GR Peg = 10.4-11.0).

600/800mm - 24" (8/5/13): the dominant galaxy in AGC 2666 appeared moderately bright, fairly small, elongated 3:2 WSW-ENE, 0.9'x0.6', contains a bright core with a very small brighter nucleus. A mag 13.5 star is superimposed west of the core, just 13" from the center. A mag 11 star (GR Peg) lies 2.6' ENE. NGC 7768 is surrounded by a number of faint galaxies including a N-S string of 4 galaxies to the north (with an additional 3 nearby). Another group of 3 or 4 galaxies (including NGC 7765, 7766, and 7767) are also arranged in a N-S string close west, so most of the cluster is in a 12' chain oriented north-south.

CGCG 477-020 is very faint, very thin edge-on 4:1 NW-SE, 24"x6". Located 4.3' N of NGC 7768 and southernmost in a string of four galaxies extending 4' N with PGC 72606 next at 1.3' N. PGC 62606 is extremely faint to very faint, very small, elongated 2:1 NW-SE, 15"x8". PGC 72608, just 1.1' further NNE, is very faint, very small, round, 12" diameter. Finally, PGC 72609, an additional 1.9' N, is very faint, very small, round, 12" diameter. CGCG 477-016, 3' due W of PGC 72609, is faint to fairly faint, fairly small, round, 24" diameter. Slightly larger and brighter than most members of the cluster. This is a rare collisional ring galaxy but was too faint to see any structure.

Notes by Steve Gottlieb