Albert Marth discovered NGC 2405 = m 105 on 7 Nov 1864 with Lassell's 48" and recorded "vF, S, iR." His position is 1' S of CGCG 117-51 = PGC 21224.
400/500mm - 17.5" (2/8/91): very faint, small, very low even surface brightness. A mag 15.5 star is just off the north edge.
Notes by Steve Gottlieb