600/800mm - 24" (2/5/13): at 375x, I was please to pick up this superthin, along with its twin UGC 4185. Both appeared extremely faint to very faint, extending 0.8'x0.15' NW-SE, low surface brightness. Sometimes one or the other was only visible, and at times both would pop at the same time. Fainter MCG +11-10-5 to the south was not seen.

900/1200mm - 48" (2/19/12): at 488x - UGC 4186, UGC 4185 and MCG +11-10-5 form a striking trio of superthin galaxies, all easily fitting in a 2' circle. UGC 4186 appeared fairly faint, elongated 6:1 NW-SE, ~1.0'x0.15', very small bright core. The center of UGC 4185 is just 0.7' WNW. The size and brightness of this pair is very similar and their PA's differ by only 15?. A mag 10.7 star is ~3' SE of the trio and a distinctive trio of mag 12.5-15 stars forming a right triangle is half that distance SE. UGC 4186 was on the TSP 2010 observing list.