Basic object information
Object name: NGC 3766
Object type: Open cluster
Magnitude: 5.3
Size: 15.0'
Number of stars: 100
Magnitude of brightest star: 7.2
Object classification: I 1 p
Description: Cl,pL,pRi,pC,st 8...13
Notes: Incl D* I 421

Catalog information
RA (J2000.0): 11h 36m 12.0s
Dec (J2000.0): -61 37' 00"

Constellation: Centaurus

Observer: Iiro Sairanen
Obs. place: Wicherina, Greenough, Australia
Date/time: 18/19.12.2009 1:15
Telescope: Newton 110/805 mm
Magn: 161x Filter: -
Field: 25' NE Lim.mag: 7.2
SQM: 21.7 (1) Seeing: 3
Visuality: I Height: 33
Weather: +20C, scattered clouds  
A beautiful cluster of 8-12 mag stars, pretty compact at low powers. Sadly the clouds ruined this observation...