Harold Corwin

IC 2610 was a "fausse image" in Bigourdan's eyepiece. There is nothing on the sky at his place matching his description. He also adds the note, in italics, "Could be a false image." I do not know what causes these things (internal reflections in his refractor, perhaps?), but they pop up occasionally in his observations.

Bigourdan also notes that his measurement of the "nebula" was somewhat disturbed by a 13th magnitude star 25 arcsec away in PA = 270 deg. That star is indeed there -- but his "diffuse nebula, round, about 30 arcsec in diameter, little brighter in the middle with no nucleus" is not.

Finally, a faint galaxy close southeast of a much brighter star -- the pair is about 1.5 arcmin southwest of Bigourdan's position -- is sometimes called IC 2610. Bigourdan's measurement makes clear that this cannot be true.

― IC Notes by Harold Corwin

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page