Basic object information
Object name: NGC 2539
Object type: Open cluster
Magnitude: 6.5
Size: 15.0'
Number of stars: 50
Magnitude of brightest star: 9.1
Object classification: II 1 m
Description: Cl,vL,Ri,lC,*11...13
Notes: H VII 11;rich cluster;near M46 and M47;D* 19 Pup in field

Catalog information
RA (J2000.0): 08h 10m 36.0s
Dec (J2000.0): -12 49' 00"

Constellation: Puppis

Observer: Iiro Sairanen
Obs. place: Nangerwalla, Mullewa, Australia
Date/time: 16/17.12.2009 0:00
Telescope: Newton 110/805 mm
Magn: 64x Filter: -
Field: 66' NE Lim.mag: 7.5
SQM: 22.0 (1) Seeing: 2
Visuality: I Height: 48
Weather: +17C, smoke  
Stars form several groups which are separated by an empty sky.