Iiro's DeepSky Sketches

Name: PK 122-4.1 (Abell 2)	Other name: Abell 2
RA: 0h 45.6m	DEC: +57° 57'
Constellation: CAS
Type: Planetary nebula
Magnitude: 14.1
Size: 33'' x 29''
Surface brightness: 13.4
Brightest star: 19.8
Classification: 2c
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 11/12.10.2004 20:50
Instrument: Newton 406/1830 mm
Magnification: 292x	Filter: -
Field: 10'	Seeing: 3
Background sky: 2	NE lim mag: 6.5
Visuality: IV	Height: 63°
Weather: +0°C, good
Description: Extremely faint annular nebula. Annular-shape was visible weakly with averted vision.
Updated: 22.10.2004 14:36