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Basic object information
Name: M 23
Type of object: Open cluster
Magnitude: 5.5
Size: 27.0'
Number of stars: 150
Magnitude of brightest star: 9.2
Object classification: III 1 m
Description: Cl,B,vL,pRi,lC,*10..
Notes: 100 members to 13th mag
Catalog position for epoch J2000.0
Right ascension: 17h 56m 48.0s
Declination: -19° 01' 00"
Constellation: Sagittarius
Observer: Iiro Sairanen
Obs. place: Base del Teide (2280m above sea level), Tenerife, Spain
Date/Time: 18/19.4.2004 5:17
Telescope: Newton 110/805mm
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Magn: 64x |
Filter: |
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Field: 47' |
NE Lim.mag: 7,0 |
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Background sky: 2 |
Seeing: 3 |
Height: 41°
Visuality: I
Weather: +9˚C, perfecto
Beatuful starchains all over the cluster. About 70 stars visible.