NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC241
Basic Information
Location and Magnitude
Right Ascension: 0:43:33.2
Declination: -73:26:33
Constellation: TUC
Visual Magnitude:
Historic Information
Discoverer: Herschel J.
Year of discovery: 1834
Discovery aperture: 18.3
Observational
Summary description: vF, R
Sub-type: OCL
Corwin's Notes
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NGC 241 = NGC 242. Earlier, I had a long discussion of the pros and cons of
this. What that ignored was JH's own correction to the NPD of NGC 241 =
h 2342; on the "Errata" page of CGH, he corrects the minutes of NPD from "31"
to "21". This brings it right into line with the rest of the observations of
the clusters from different sweeps. Here are the relevant positions and
descriptions for NGC 242:
Sweep 441: "pL; vF; R; vgbM; (in a sweep below the pole and ill seen) the
RA is probably also in error." 00 37 13.7:, 164 21 50.
Sweep 625: "A binuclear nebula, or two, vS, R, running together."
00 37 07.2, 164 22 22.
Sweep 738: "A small irresolvable knot in the bright part of Nubec. Min."
00 37 09.9, 164 22 18.
Compare these with his description and corrected position for NGC 241:
Sweep 482: "A vF, R nebula or group. (We are now fairly in the Nubecula
Minor, and the field begins to be full of a faint perfectly
irresolvable nebulous light)." 00 37 05.1, 164 21 32
The only question that remains is why JH himself did not notice that the two
objects are identical. That would have given us just one GC and one NGC
number for the object rather than two.
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Finally, this object figures peripherally in the identity of NGC 222, which
see. There is also an interesting note there about the telescope being aimed
so low that some of the light of the objects in Sweep 441 was lost in tree
tops!
Steve's Notes
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NGC 241
See observing notes for NGC 242.