NGC/IC Project Restoration Effort

===== NGC 3743, 3744, 3745, 3746, 3748, 3750, 3751, 3753, and 3754. The last seven of these are Copeland's Septet. The Notes to IC1 relate how the positions in NGC came to be calculated incorrectly. Briefly, Dreyer took Copeland's reference to the comparison star as "reddish" to apply to the wrong star. Thus, the differences between the NGC positions and the correct positions is a simple offset in RA and Dec. Here are tables showing corrected identifications and information for the Septet area in the four major catalogues from which we drew information for RC2: RNGC, Zwicky's CGCG, VV's MCG, and Nilson's UGC. Here are identifications for the galaxies with objects listed in MCG, UGC, and CGCG: NGC MCG UGC CGCG (Vol. II, pp. 176 and 180) 3743 --- --- 11 33.2 +22 00, mp = 15.6 3744 --- --- 33.2 +23 16, mp = 15.4 3758 +04-27-073 --- 33.8 +21 52, mp = 14.8 3745 +04-28-004 --- ---- 3746 +04-28-005 06597 35.1 +22 17, mp = 15.3 3748 +04-28-007 --- 35.2 +22 18, mp = 15.5 3750 +04-28-008 --- 35.3 +22 15, mp = 15.2 3751 +04-28-009 06601* ---- 3753 +04-28-010 06602 -\ - 35.4 +22 16, mp = 14.6* 3754 +04-28-011 --- -/ *UGC 6601 - coordinates and magnitude wrong in UGC, but the Note clearly points to the correct object. *NGC 3753 are 3754 both included in the same CGCG entry. Finally, there is a bit of a mystery concerning the name "Copeland's Septet." When the de Vaucouleurs and I adopted this for RC2 (see Table 16b, page 52) in the early 1970's, we thought we were following our self-imposed rule to not provide new names for objects, but to merely copy those used in the literature. Since that time, I've been unable to find the source of the name. My query about this in the Webb Society Quarterly Journal (No. 90, 1992 October, page 41) has brought no response. It's possible, then, that we were the first to use the name. Wherever it came from, it is now in common use.

===== NGC 3743 18" (5/12/07): very faint, extremely small, round, 12" diameter. Located 1.4' NW of a mag 10 star. Discovered on the same night as Copeland's Septet (13 April 1876) and located 30'-35' SW of this compact group.