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Cl Basel 1
Cl Basel 1, Cl Apriamaswili 1, C 1845-059, OCISM 16, Ocl 77, Ocl 77.0
RA: 18h 48m 12s
Dec: −05° 51′ 0″
Con: Scutum
Ch: MSA:1318, U2:295, SA:16
Ref: SIMBAD, DAML02, Archinal&Hynes (2003)
Type: open cluster, 41p
Mag: B=9.34, V=8.9
Size: 5′
PA: ?
Modern observations
Walter Scott Houston
Houston writes that "a little less than one degree north-west of M11, within a quadrilateral of 6th and 7th magnitude stars that includes R Scuti, is a tiny knot of stars only a couple of arc minutes in diameter known as Basel 1. Although it shows well on most photographs of this region, I do not know of a single star atlas that plots the group. It can be seen with a 4-inch and a 12-inch makes it into an obvious cluster."
Steve Coe
Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "pretty faint, pretty small, not compressed. 12 stars and a hazy backround of dimmer members at 100X. A nice trapezium of stars surrounds the cluster. Near R Scuti.
Brian Skiff
[~N6699]
Grubbisich: pair: G=13.0,13.4; 11".3; ~150. needs remeas on POSS.
Fenkart: same pair: G=12.0, 13.0; 9".0; ~150.
7cm - mod br @ 30x in R Sct trapezoid. 75x: ~15 *s in scattered grp w/close trio on E side. BS, 23Jun1996, Mars Hill.
15cm - consp but poor cl in R Scuti trapezoid. irreg outline ~5' diam w/30 *s counted @ 140x. sm clump of brtr *s on E incl pair: 8"; 150; dm 0.8 or 1.0. BS, 11Jun1988, Anderson Mesa.
Contemporary observations
Auke Slotegraaf
1997 July 8
1997 July 8, Tuesday, 20:55 - 23:30 Jonkershoek. 11x80's tripod-mounted. Not found.
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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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