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Basic object information
Name: M 55
Type of object: Globular cluster
Magnitude: 7.0
Size: 19.0'
Object classification: 11
Description: pB,L,R,vRi,vgbM
Notes: * mags 15...
Catalog position for epoch J2000.0
Right ascension: 19h 39m 59.4s
Declination: -30° 57' 44"
Constellation: Sagittarius
Observer: Iiro Sairanen
Obs. place: Boca de Tauce (1980m above sea level), Tenerife, Spain
Date/Time: 16/17.4.2004 4:45
Telescope: Newton 110/805mm
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Magn: 47x |
Filter: |
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Field: 64' |
NE Lim.mag: 6,9 |
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Background sky: 2 |
Seeing: 3 |
Height: 15°
Visuality: II
Weather: +2°C, moist
About 10' in size globular. Several stars were visible. Two birghtenings oin southside.