Iiro's DeepSky Sketches

Name: NGC 6231Other name: Dunlop 520
RA: 16h 54.2m DEC: -41° 49'
Constellation: SCO
Type: Open cluster
Magnitude: 2.6
Size: 15.0'
Brightest star: 4.7
Classification: I 3 p n
Description: Cl,B,cL,pRi,st10..13
Notes: Table of Scorpius,If at dist of Pleiades 8 Bri *s =Sirius
Observer: Iiro Sairanen
Location: Wicherina, Greenough, Australia
Date: 11/12.1.2010 3:35
Instrument: Newton 254/1200 mm
Magnification: 239xFilter: -
Field: 17'Seeing: 2
Background sky: 1NE lim mag: 7.5
Visuality: IHeight: 16°
Weather: +10°C, windy
Description: Table of Scorpius. A very bright open cluster. Nothing special here.
Updated: 16.9.2010 22:13