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NGC 6716 (15,434 of 18,816)

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NGC 6716

NGC 6716, C 1851-199, Cl Collinder 393, COCD 457, h 2021, GC 4443

RA: 18h 54m 30s
Dec: −19° 54′ 0″

Con: Sagittarius
Ch: MSA:1366, U2:340, SA:22

Ref: SIMBAD, DAML02, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 41p

Mag: B=7.7, V=7.5

Size: 10′
PA: ?

Published comments

Trumpler, R.J. (1928)

Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 8' and the class as 2 3 p.

Vorontsov-Velyaminov, B. (1925/1926)

Vorontsov-Velyaminov, B. "Integral magnitudes of south star clusters", Astron. Nach. 228, 325. Comparing the brightness of the cluster with the extrafocal images of stars, he estimates the magnitudes as 7.73

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 7.0 mag open cluster.

Steve Coe, observing with a 13" f/5.6, notes: "Pretty faint, pretty small, 20 stars in a Milky Way field at 100X, not much at any power."

Contemporary observations

Auke Slotegraaf

1992

Lying near the wide pair Zeta 1 and Zeta 2 is this very open, scattered-about cluster. In 11x80 binoculars, its borders are difficult to pin down - there does not seem to be a clear boundary to this very rich star field. There are a half-dozen or so individual stars which stand out prominently, embedded in a mottled swarming mass of light points.

1995 May 26

1995 May 26, 03:00. 11x80 binoculars. This cluster stands out well while sweeping over the area. It appears as an irregular mottled patch with several star-points. It lies in a rich field.

1995 May 30

1995-05-30: 11x80.Technopark. 23:00 SAST. Hazy sky. Elongated grouping of small stars.

Magda Streicher

(no date)

16-inch f/10 SCT (127x)

This medium size 8' grouping show off a S formation of various magnitude stars in a SW-NE direction. Very interesting, the SW end of the stars flare out to show a more roundish end to this very nice S string, which contain more or less 30 stars. Nice one to sketch.

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