NGC 185 Harvard 21
Cas
☀9.1mag
Ø 5.0'
Photo Synthetic

John Herschel discovered NGC 146 = h28 on 27 Oct 1829 and recorded a "loose cl; s 11 and 12m; 10' diam; place that of a double + (h 1033) whose RA is erroneously stated in my 4th catalogue."

200/250mm - 8" (11/28/81): includes a few mag 10 stars, many mag 12 stars and fainter stars over haze. Located 22' N of a mag 4 star. NGC 133 is in the field to the WNW and King 14 is close SW.

400/500mm - 17.5" (10/20/90): about 30 stars in a fairly large group about 10' diameter. Includes a close mag 10 pair at 7" separation, 10 stars mag 12-13 and 20 stars mag 14-15. Third of three open clusters in low power field with King 14 10' SW and NGC 133 10' WNW.

600/800mm - 24" (1/4/14): at 125x and 260x, ~60 stars are resolved in a 7' region that stands out reasonably well at low power. Near the southeast end of the group is the pair h 1033 = 10/10 at 7". The cluster is generally elongated NW-SE and includes a dozen or so brighter stars. A rectangular "void" lacking stars is on the NW side.

Notes by Steve Gottlieb