Iiro's DeepSky Sketches

Name: NGC 2509Other name: OCL 630
RA: 8h 0.8m DEC: -19° 3'
Constellation: PUP
Type: Open cluster
Magnitude: 9.3
Size: 8.0'
Number of stars: 70
Classification: II 1 p
Description: Cl,B,pRi,lC,st S
Notes: H VIII 1
Observer: Iiro Sairanen
Location: Tocodoman, Gran Canary, Spain
Date: 4/5.2.2005 23:51
Instrument: Newton 110/805 mm
Magnification: 107xFilter: -
Field: 28'Seeing: 3
Background sky: 2NE lim mag: 6.5
Visuality: IIHeight: 42°
Weather: +10°C, windy
Description: A beater-shaped open cluster in Puppis. There is a 11 mag star on the west edge. Strong background glow is visible even with direct vision. Stars are mainly 12 mag and fainter, the cluster is clearly detached. Few dozens of stars resolved.
Updated: 19.3.2005 23:00