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RA: 15h 56m 0.4s
Dec: −57° 27′ 6″
Ch: MSA:983, U2:432, SA:25
Ref: SIMBAD, Collinder (1931), DAML02, Archinal&Hynes (2003)
Type: open cluster, 12m
Mag: B=11.9, V=10.7
James Dunlop discovered this object from Paramatta, New South Wales, and included it as No. 334 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a faint round nebula, about 1.5' diameter, very slightly bright towards the centre. A small star is south, rather preceding the nebula, and Iota Normae is south following."
NOTE: The NGC says this is Dunlop 334; is this perhaps a misprint for Dunlop 344?
NOTE2: See the comment below on the UOC.
Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "cluster VI or VII class, pretty much compressed, irregular figure, 5' or 6' diameter, stars 12..16th mag." On a second occassion he called it "cluster, small, irregularly round, gbM, a group or rather a small oval pretty much compressed cluster of stars 16..17th mag. A few = 15th mag." His third observation was recorded as "a milky way cluster; but so densely concentrated as to merit as a fine cluster VI class; irregularly round, gbM, stars 11..15th mag."
A catalogue of star clusters shown on Franklin-Adams chart plates. Mem.R.A.S., 60(5), 175-186.
Raab, S. (1922) A research on open clusters. Lund Medd. Astron. Obs. Ser. II, 28, 1.
Discussed, based of F-A plates.
"Cat. of Open Cl. south of -45° Decl.", Mem. 17 Mnt Stromlo Obs.
Moffat, AFJ & Vogt. N. (1975) "Southern Open Star Clusters VI. UBV-H-beta Photometry of 18 Clusters from Centaurus to Sagittarius." Astron.Astrophys.Suppl., 20, 155-182. [image, table]
"Although clustering appears obvious from inspection of star charts, our photometry does not reveal a cluster sequence. Photometry of fainter stars may be necessary to judge better the reality of this cluster."
Described in Union Obs. Circulars, 45-76, p 50. "Nebulae, clusters, etc. on Sydney Plates". Says Dunlop 344 is at RA 15h 45.7, Dec -57° 4', which corresponds well with NGC 6005, which is = Dunlop 334 in the NGC. Perhaps a misprint? The UOC describes Dunlop 344 as "Loose cluster of 50 very small stars within a diameter of 5'."
Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 3.5' and the class as 1 2 m.
The RNGC (Sulentic and Tifft 1973) notes that this is a 11.5 mag open cluster.
15cm - another well-concen cl of f *s. vwide m10 pair on SW. 140x: pair defines
border, thus 3' diam w/30 *S res. mod sharp concen; irres & hazy twd
center. * are m13+. hardly res @ 80x. BS, 26Feb1990, LCO.
1997 Sept 03: 11x80 tripod-mounted. 23:00 SAST. Jonkershoek.
Perhaps a bright star?
Location: Camp Site: ( South 23 16 East 29 26 )
Sky conditions: clear fair about 6 magnitude.
Instrument: 8 inch Meade ( super wide-angle 18 mm. Eyepiece ).
Date: April 1997.
Compressed small irregular open cluster, bright and dense to the middle with pinpoint stars. To the south of this open cluster what appears to be a double star of equal brightness can be seen. This cluster is embedded in a rich starfield.
12-inch f/10 SCT (EP: 2-inch 32mm SW 95x 42' fov; 2-inch 14mm UW 218x 23' fov)
Compressed, small, irregular open cluster, yet bright and dense towards the middle with pinpointed stars. The cluster displays a slightly pointed form just like a swallow in flight to the west. Stars appear over the whole surface of the cluster. To the southwest of this open cluster there appears to be a 9th magnitude double star equal in white colour, which is quite outstanding and fascinating. The cluster is embedded in a rich star field. Iota Normae is situated 1 degree south east of NGC 6005.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
This open cluster looks like a misty haze whereby I have noticed that the stars in NGC 6005 present a granular appearance in which some of the stars in this cluster are vaguely resolved.NGC 6005 is an open cluster that is well detached.This object has stars which consists of 11th to 12th magnitude stars in which the stars are arranged in a NNE-SSW position.The stars in NGC 6005 are strongly concentrated towards each other.This open cluster measures 7.1'x 5'with P.A:NNE/SSW.
The Messier objects
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