Harold Corwin

IC 2159 is a part of NGC 2175 (which see). Bigourdan's long focus refractor could not show him the entire nebulosity, so he picked up only the two bright knots in it, plus a fairly star-free section of it southeast of the center. It is this southeastern portion that carries the IC number. I don't see anything special on the DSS, nor on the POSS1, which would have attracted his attention to this particular part of the nebula -- but nevertheless, there rests his approximate position, the same from two different nights.

― IC Notes by Harold Corwin

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