Iiro's DeepSky Sketches

Name: NGC 663	Other name: OCL 333
RA: 1h 46m	DEC: +61° 15'
Constellation: CAS
Type: Open cluster
Magnitude: 7.1
Size: 16'
Number of stars: 80
Brightest star: 8.4
Classification: III 2 m
Description: Cl,B,L,eRi,st pL
Notes: H VI 31,In Cas OB8,incl Struve 151 152 & 153
Observer: Iiro Sairanen
Location: Lakasenpelto, Imatra, Finland
Date: 2/3.11.2004 19:20
Instrument: Newton 110/805 mm
Magnification: 47x	Filter: -
Field: 64'	Seeing: 2
Background sky: 4	NE lim mag: 5.1
Visuality: II	Height: 62°
Weather: +3°C, 73% Moon is rising in NE
Description: Bright and rich open cluster. Several members are between 9 and 12 magnitudes. Four doubles are the leading members of the group. Horseshoe -shaped background glow is obvious even in these conditions with direct vision.
Updated: 8.11.2004 20:45