Iiro's DeepSky Sketches

Name: IC 4634	Other name: PK 0+12.1
RA: 17h 1.6m	DEC: -21° 50'
Constellation: OPH
Type: Planetary nebula
Magnitude: 12
Size: 20'' x 10''
Surface brightness: 6.6
Brightest star: 17
Classification: 2a(3)
Description: eS,B
Notes: Pale blue disk 10" across--Hartung
Observer: Iiro Sairanen
Location: Base del Teide (2280m), Tenerife, Spain
Date: 18/19.4.2004 1:35
Instrument: Newton 110/805 mm
Magnification: 107x	Filter: -
Field: 28'	Seeing: 3
Background sky: 2	NE lim mag: 7
Visuality: III	Height: 17°
Weather: +9°C, dry and good
Description: A stellar planetary nebula which is visible with averted vision. No colour
Updated: 15.5.2004 13:14