Harold Corwin

IC 4924 is most likely a defect, too. Wolfgang has chosen ESO 339-G015, about 2.5 arcmin northeast of Stewart's position, but I think it is too small (0.5 x 0.35 arcminute) and faint (B_t = 16.6) to appear on Stewart's plate 3701 (a one-hour exposure). The galaxy also has too high a surface brightness to match his description "neb. like and hazy, but poss. defect, susp." Dreyer shortened this to simply "dif (?defect)". We, of course, need to examine the Bruce plate to be sure.

Curiously, this IC number does not appear in ESO-B or in ESO-LV. It is one of the few that Andris missed.

― IC Notes by Harold Corwin

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