Harold Corwin

Another of Barnard's "private communications" to Dreyer, there is no nebulosity associated with the star (BD +57 651 = HD 17581 = SAO 23662) that is visible on any of the modern sky survey images. Barnard mentions the nebulosity in his Milky Way Atlas (Plate 2, text); there is just a vague trace of his nebulosity visible on the scan of the plate itself. Since it appears on no other plate or image, it is almost certainly a defect on Barnard's plate.

The position from Barnard that I adopted is from the Milky Way Atlas text.

― IC Notes by Harold Corwin

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