Iiro's DeepSky Sketches

Name: NGC 2539	Other name: OCL 611
RA: 8h 10.6m	DEC: -12° 49'
Constellation: PUP
Type: Open cluster
Magnitude: 6.5
Size: 22.0'
Number of stars: 50
Brightest star: 9.1
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
Observer: Iiro Sairanen
Location: Nangerwalla, Mullewa, Australia
Date: 16/17.12.2009 0:00
Instrument: Newton 110/805 mm
Magnification: 64x	Filter: -
Field: 66'	Seeing: 2
Background sky: 1	NE lim mag: 7.5
Visuality: I	Height: 48°
Weather: +17°C, smoke
Description: Stars form several groups which are separated by an empty sky.
Updated: 31.8.2010 21:34