400/500mm - 17.5" (12/23/97): the "B" component of HCG 25 was picked up first at 220x. Appeared very faint, small, slightly elongated N-S, 25"x20", no noticeable concentration. Forms a pair with UGC 2690 = HCG 25A 3.9' NNE.

900/1200mm - 48" (10/23/11): bright, moderately large, elongated 2:1 N-S, 0.8'x0.4', well-concentrated with a bright core. This galaxy is slightly more prominent than HCG 25A due to a higher surface brightness. HCG 25F is attached at the south end, 30" between center. This galaxy has a similar redshift as HCG 25A and 25C, while 50% higher redshifted 25C, 25E, 25F (at south end) and 25G are likely a background group.