NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC2306
Basic Information
Location and Magnitude
Right Ascension: 6:54:29.5
Declination: -7:11:55
Constellation: MON
Visual Magnitude:
Historic Information
Discoverer: Herschel W.
Year of discovery: 1786
Discovery aperture: 18.7
Observational
Summary description: Cl, P, vlC
Sub-type: OCL
Corwin's Notes
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NGC 2306 is probably a rich portion of the Milky Way. Neither WH nor JH
seemed mightily impressed with it. JH in particular thought it simply a
concentration of stars rather than a true cluster.
Examining the POSS1, I thought it might be identical to NGC 2309 which is 1.5
minutes of time to the east. However, JH saw both objects in the same three
sweeps: his concurrent observations rule out an equality.
The "object" I've chosen as N2306 appears on the POSS1 as an elongated cloud
of stars, magnitudes 10-13, roughly 20 arcmin by 10 arcmin, with the long axis
in position angle 70 deg. The position in the table is just an arcmin
southwest of JH's position, adopted for GC and NGC.
Steve's Notes
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NGC 2306
18" (1/26/09): at 175x, ~75 stars are resolved in an 18'x10' Milky Way group or cloud that streams WSW to ENE. The richest portion is on the west side just south of mag 8.6 HD 50734 (not part of the group). This subgroup includes a fairly close double star and a very small clump that resolves into at least 4 tightly packed stars. Appears to be an unimpressive Milky Way field, though the cloud is somewhat detached so is distinguishable.
WH (VIII 51) noted this object as "a cluster of very scattered stars" and JH, who observed it three times (h416) described as an outlying portion of VIII 39 = NGC 2302 and "has no title to be called a cluster."