Iiro's DeepSky Sketches

Name: NGC 1981	Other name: OCL 525
RA: 5h 35.2m	DEC: -4° 26'
Constellation: ORI
Type: Open cluster
Magnitude: 4.2
Size: 25.0'
Number of stars: 20
Brightest star: 6.3
Classification: III 2 p n
Description: Cl,vB,lRi,st L,sc
Notes: In Ori OB1,incl D* Struve 750
Observer: Iiro Sairanen
Location: Lakasenpelto, Imatra, Finland
Date: 9/10.1.2002 23:45
Instrument: Newton 406/1830 mm
Magnification: 73x	Filter: -
Field: 41'	Seeing: 3
Background sky: 4	NE lim mag: 4.5
Visuality: I	Height: 0°
Weather: foggy, -1°C
Description: Vähätähtinen avonainen helpossa paikassa.
Updated: 3.2.2003 13:18