NGC/IC Project Restoration Effort
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NGC2430
Basic Information
Location and Magnitude
Right Ascension: 7:39:41.0
Declination: -16:17:46
Constellation: PUP
Visual Magnitude:
Historic Information
Discoverer: Herschel W.
Year of discovery: 1785
Discovery aperture: 18.7
Observational
Summary description: Cl, vL, vlC
Sub-type: *Grp
Corwin's Notes
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NGC 2430 may be the large sparce group of relatively faint stars centered
about 5 arcmin northeast of WH's position. There is a concentration within
this group centered just 6 seconds following his position, but it is rather
small (8 x 4 arcmin) for a cluster described as "very large." The larger
grouping is 14 x 11 arcmin across, so that is the one I've tentatively taken.
Another possibility is OCL 606 1.7 minutes following, and 5 arcmin north, of
WH's position. The 1.7 minutes is not an easy mistake to make, however, so
I'm doubtful about this. But that cluster does match WH's description, so it
remains a possibility.
NGC 2428 was found in the same sweep just 9 seconds preceding and 10 arcmin
south of NGC 2430. Had the two been found in different sweeps, I would have
confidently declared them to be identical. NGC 2428 is clearly a cluster that
matches WH's description (and his position), and I could easily imagine that
it could be stumbled across independently on different nights. However,
having been found so close together, apparently within a few minutes of each
other, the two objects that WH recorded are almost certainly different
objects.
Steve's Notes
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NGC 2430
18" (2/4/08): scattered, undistinguished group with three brighter stars (separations of 3'-4') including mag 8.5 HD 61553 and two mag 10-10.5 stars. A small group of fainter stars is the south of the mag 9 star and a larger group of faint stars is just north of the triangle of brighter stars. Even so, there is really nothing here to catch my eye and it clearly appears to be a random Milky Way star field. Just 10' SSW is NGC 2428, another unimpressive Milky Way concentration. Listed as nonexistent in the RNGC.