Guillaume Bigourdan discovered IC 1204 = B. 207 on 25 Mar 1889 and logged "mag 13.4-13.5; 20" diameter; stellar nucleus, a star mag 11 in pa 100° [ESE], distance = 3'." His Comptes Rendus position (used in the IC 1) is 19' too far south, but the position was corrected in the IC 2 Notes. The CGCG and MCG ignore the IC designation, which is not in doubt. See Corwin's notes for more.

600/800mm - 24" (6/14/15): faint to fairly faint, fairly small, elongated 5:2 or 3:1 SSW-NNE, 0.6'x0.2', brighter core but no nucleus. Forms a pair with brighter NGC 6091 3.6' SE.

Notes by Steve Gottlieb