Basic object information
Object name:NGC 4147
Object type: Globular cluster
Magnitude: 10.4
Size: 4.4'
Object classification: VI
Description: B,pL,E,bM
Notes: H I 11;equals NGC 4147; best possible ID

Catalog information
RA (J2000.0): 12h 10m 06.0s
Dec (J2000.0): +18° 33' 00"
Constellation: Coma Berenices

Observer: Iiro Sairanen
Obs. place: Ania, Pirkkala, Finland
Date/Time: 20/21.4.2009 0:00

Telescope: Newton 300/1500 mm

Magn: 429x
Field: 11'
Background sky: 3 (20.85)Visuality: I

Filter:
NE Lim.mag: 6.6
Seeing: 1
Height: 47°

Weather: -6°C

A small globular cluster in spring’s galaxy fields. The cluster is strongly granular but only few individual stars are visible with averted vision. The brighter core-area is little bit “irregular”.