Frank Muller discovered NGC 2585 = LM 2-404 in 1886 and recorded "mag 14.0, 0.5' dia, R, 3rd of 4 [with NGC 2583, 2584, 2586]." There is nothing at his position, but 1.0 minute of RA west (same offset as NGC 2583 and 2584) is MCG -01-22-010 = PGC 23537. Kobold measured an accurate micrometric position at Strasbourg in 1895 as well as Porter at the Cincinnati Observatory in 1906. MCG misidentifies MCG -01-22-012 as NGC 2585.
400/500mm - 17.5" (1/12/02): faint, fairly small, irregularly round, weak concentration, 0.9' diameter. Third of three on a SW-NE line with NGC 2584 and NGC 2583 to the SW. This is a challenging trio and I missed two nearby MCG galaxies.
17.5" (4/6/91): faint, small, round, very weak concentration. Third of three on a line with NGC 2584 5' SW and NGC 2583 7' SW. Viewed core only (the arms are very low surface brightness on the DSS).
600/800mm - 24" (2/16/15): fairly faint, fairly small, irregularly round, 0.7'x0.6', weak broad concentration with no distinct zones but surface appears mottled. In a group with NGC 2585 4.3' SW and NGC 2583 7.0' SW (on a line) as well as MCG -01-22-012 (identified as NGC 2586 in RNGC and PGC) 16' ENE.
In addition, a close pair, MCG -01-22-006 and -007, are 5.3' and 6.4' WSW. MCG -01-006 appeared faint to fairly faint, small, elongated 2:1 SSW-NE, 20"x10". MCG -01-01-007 was extremely to very faint, very small, slightly elongated NW-SE, 12"x9", low even surface brightness. The MCG's have a similar redshift as NGC 2584 and 2585.
Notes by Steve Gottlieb