NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC3932
Basic Information
Location and Magnitude
Right Ascension: 11:51:53.0
Declination: +48:40:3
Constellation: UMA
Visual Magnitude: 13.6
Historic Information
Discoverer: d'Arrest
Year of discovery: 1861
Discovery aperture: 11.0
Observational
Summary description: vF, v diffic, II 740 np
Sub-type: *
Corwin's Notes
=====
NGC 3932 is a star. D'A has only one observation of it included in his AN
1500 list (where it is No. 125), and in the shorter list (where it is No. 84)
that he sent to JH for inclusion in GC (where the NPD is 6 arcsec larger than
the NGC NPD). He chose to not include it in his big 2nd monograph; Wolfgang
suggests that this was because d'A knew it was a star by that time.
In the AN list, d'A describes it as "vF, S. Companion of h. 999 [N3928],"
while in the GC, the description reads "vF, v diffic, H.II.740 np." JH is
surely responsible for substituting his father's catalogue number for his own,
but I suspect that the "v diffic" comes from d'A. I would guess that d'A
prepared the two lists at different times from the same observing logs.
Perhaps the logs have both "S" and "v diffic" in them.
In any event, the faint galaxy chosen by CGCG is not d'A's object -- it is 17
arcmin off his position, and is probably too faint for him to have seen with
his 11-inch refractor.
RC1 got it right: In the note for NGC 3928, the de Vaucouleurs say "NGC 3932
sf 5.5 arcmin is a star." They also have a reference to Reinmuth (1926, "Die
Herschel-Nebel", in Vol. 9 of the Heidelberg publications) who gave the NGC
position (d'Arrest's), a diameter of 0.3? x 0.3? arcmin, and the description
"* 11.0 in eeF neb?" Reinmuth also classified the object as "(c)" on Wolf's
system -- this means a star (or stellar nucleus) surrounded by a corona of
faint nebulosity. There is, however, no trace of nebulosity surrounding the
star on POSS1 or on POSS2.