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NGC 5824 (12,849 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5824

NGC 5824, NGC 5834, GCL 31, ESO 387-1, C 1500-328, Bennett 67

RA: 15h 03m 58.5s
Dec: −33° 04′ 4″

Con: Lupus
Ch: MSA:907, U2:373, SA:21

Ref: NGC/IC, Archinal&Hynes (2003), SEDS

(reference key)

Type: globular cluster

Mag: B=9.1, V=9.09

Size: 6.2′
PA: ?

Historical observations

Barnard, E.E

The 9th mag globular cluster was discovered by E. E. Barnard using a 6-inch refractor at Nashville, Tennessee and described as a nebula with a stellar nucleus.

Finlay, W.H. (1887)

In September 1883 W.H. Finlay used the 6-inch refractor at the Royal Observatory, Cape of Good Hope, to observe the cluster which he described as a "bright small nebula".

Published comments

Union Observatory Circular (c.1919)

Union Observatory Circulars, Nos. 45-76, p328. R T Innes writes: "This was discovered by Barnard, and the summary description is "pB, S, stell, N" It is CPD -323780 mag 9.4 and is also in the Cor. D.M., wherein it is marked 'neb'. In the 26.5-inch refractor is has almost exactly the appearance of NGC 104, as seen in a small telescope. It is a vey condensed globular cluster, its outliers resolved into stars."

Van den Bergh & Hagen (1968)

Van den Bergh and Hagen ("UBV photometry of star clusters in the Magellanic Clouds", Astronomical Journal, Vol. 73, 1968) find that the integrated V magnitude through a 60'' diaphragm is 9.47. Through a 30'' diaphragm V = 9.80.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 10.0 mag globular cluster.

Harris, W.E. (1997)

RA 15 03 58.5 (2000) Dec -33 04 04 Integrated V magnitude 9.09 Central surface brightness, V magnitudes per square arcsecond 15.08 Integrated spectral type F4 Central concentration, c = log(r_total/r_core); a 'c' denotes a core-collapsed cluster 2.45 Core radius in arcmin .05. ["Catalog Of Parameters For Milky Way Globular Clusters", compiled by William E. Harris, McMaster University. (Revised: May 15, 1997; from http://www.physics.mcmaster.ca/Globular.html; Harris, W.E. 1996, AJ, 112, 1487) ]

Modern observations

Walter Scott Houston

Houston writes that this globular "is about 6' across and at 9th mag is easy to find. Surprisingly, it was discovered by E E Barnard in a region well combed previously by the Herschels and others. The core of NGC 5824 is almost stellar in appearance."

Tom Lorenzin

Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "9.5M; 3' diameter; small, unresolved glow with very highly compressed central region; overall brightness fairly high; 25' SSE of bright star 5.5M SAO 206239."

Steve Coe

Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "Pretty bright, pretty small, round, very bright core, not resolved at any magnification up to 200X.

Contemporary observations

Magda Streicher

(no date)

12-inch f/10 SCT (EP: 2-inch 32mm SW 95x 42' fov; 2-inch 14mm UW 218x 23' fov)

Small and relatively bright, growing gradually brighter to a much brighter nearly star like core, with a slightly soft envelope around the middle, changing to a soft haze. The tight core roughly covers one third of the globular (218x). Easily visible, it reminds me of a streetlight on a wet and misty night. No stars are revealed, although the edges become faintly granular with just a few faint stars visible (218x). Immediately around this globular the field is rather bare. It was missed by John Herschel and picked up by Barnard who called it a nebula with a stellar nucleus. (Mag 7.8; size 6.2'; brightest star 15.5 mag.)

Richard Ford

2013 May 11th, Saturday



Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.

Instrument:12-inch Dobsonian.

This globular clusters core has the resemblance of a frozen snowball and that this objects stars are unresolved which looks exactly like a misty haze.The central core of NGC 5824 is fairly condensed and that the stars in this cluster are strongly concentrated towards each other.This globular cluster measures 3.3'x 2.7'.

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