Harold Corwin

IC 2013 must be a defect on the Bruce plate; there is nothing in its nominal position. The exposure time was only one hour, very short for the slow plates used a century ago. A galaxy matching the description given by Stewart ("cB, cL, vE at 170 deg, cbM, susp") would have had to be bright enough to have been picked up by the Herschels.

Tellingly, the only other "nebula" seen by Stewart on this plate (IC 2030, which see) is also missing. I suspect that it too is a defect.

― IC Notes by Harold Corwin

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