Heinrich d'Arrest discovered NGC 3235, along with NGC 3232, on 29 Dec 1861. His position, measured on 3 nights, matches UGC 5635 = PGC 30553 and he noted a mag 15 star precedes by 5.7 seconds of time, at a separation of 195" [SSW]. NGC 3234 is probably a duplicate (earlier) observation by JH with an erroneous position. See notes for NGC 3234.

400/500mm - 17.5" (3/25/95): faint, small, round, 40" diameter, slightly brighter core, faint stellar nucleus. A mag 13 star is 3.1' NNW. Brightest in a group with NGC 3232 7.7' W and IC 2572 4.7' NNE. IC 2572 appeared extremely faint, small, very elongated ~N-S, although difficult to determine exact orientation as could only glimpse.

Notes by Steve Gottlieb