Heinrich d'Arrest discovered NGC 4205 = Au 29 on 4 Oct 1861 with the 11-inch refractor at Copenhagen. His position, measured on 3 nights, matches UGC 7258 and he mentions the nearby mag 13 star at the north edge. Auwers included this object in his 1862 list of new nebulae.

400/500mm - 17.5" (4/15/93): fairly faint, fairly small, very elongated 3:1 SSW-NNE, 1.4'x0.5', brighter along major axis. A mag 13 star is just 20" west of the NNE tip.

Notes by Steve Gottlieb