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NGC 6374
NGC 6374, Cl Collinder 334, C 1729-325, h 3687, GC 4304
RA: 17h 32m 15s
Dec: −32° 35′ 48″
Con: Scorpius
Ch: MSA:1416, U2:376, SA:22
Ref: SIMBAD, Collinder (1931)
Type: open cluster
Mag: B=?, V=?
Size: ?
PA: ?
History and Accurate Positions for the NGC/IC Objects (Corwin 2004)
NGC 6374 = NGC 6383. JH has only one observation (in Sweep 794) of N6374, and I believe that is a duplicate of an "Omitted Observation..." (also in Sweep 794) for N6383 listed at the end of his CGH Observations. He has two other observations of N6383, both on different nights, but with accordant descriptions.
In the single observation leading to the NGC number 6374, JH identifies the bright star in the middle of the cluster as "B[risbane] 6125". I suspect this is the correct identification, but will have to check. If the number is correct, then it is SAO 208977 = HD 159176.
In any event, there is little doubt that the two NGC numbers refer to the same cluster. JH probably made a bookkeeping error somewhere along the line that led him to duplicate the observation in Sweep 794.
Historical observations
John Herschel (1847) Cape Observations
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "Cluster VIII class, 3' or 4' in extent, a bright star taken."
Published comments
Bailey, S.I. (1913)
Bailey, examining a Bruce plate (Harvard Annals, Vol 72, No 2), describes it as "Milky Way, rich in stars, no special cluster."
Sulentic & Tifft (1973)
The RNGC (Sulentic and Tifft 1973) notes that this is a 10.0 mag open cluster.
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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