Iiro's DeepSky Sketches

Name: NGC 4609	Other name: OCL 890
RA: 12h 42.3m	DEC: -63° 0'
Constellation: CRU
Type: Open cluster
Magnitude: 6.9
Size: 5.0'
Number of stars: 40
Brightest star: 9
Classification: II 1 p
Description: Cl,pL,pC,cE,st 10
Notes: Near Coalsack
Observer: Iiro Sairanen
Location: Nangerwalla, Mullewa, Australia
Date: 17/18.12.2009 3:05
Instrument: Newton 110/805 mm
Magnification: 161x	Filter: -
Field: 25'	Seeing: 2
Background sky: 1	NE lim mag: 7.8
Visuality: I	Height: 36°
Weather: +19°C
Description: Elliptical halo in NW-SE direction, an irregular core-area, dozens of stars visible.
Updated: 31.8.2010 21:37