Harold Corwin

IC 3797 must be a defect on Schwassmann's plate. His description is telling: "F, pS, perhaps FN, like an asteroid trail, geom N pt". I'm not sure about his last phrase ("pt" means "pointed"), but the first three make it clear that he was looking at an elongated object. In a note, he adds "Borders in α: -2.5s, +3.1s", probably the distances to the edges of the object from the nucleus.

Since there is nothing like that at his position, nor at reasonable digit offsets, this is most likely a plate defect.

― IC Notes by Harold Corwin

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