400/500mm - 17.5" (8/1/89): very faint, very small, slightly elongated ~E-W, weak concentration. Forms a pair with UGC 10567 2.5' NE.

600/800mm - 24" (7/15/15): at 375x; fairly faint, fairly small, elongated 5:2 E-W, 25"x10", low even surface brightness. A mag 16.5 star is close southwest of center [by 26"]. Forms a pair with brighter UGC 10567 2.4' NE. This is an interacting, disrupted pair but the long tidal arms of UGC 10566 were not detected.