Iiro's DeepSky Sketches

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Name: NGC 7139Other name: PK 104+7.1
RA: 21h 46.1m DEC: +63° 48'
Constellation: CEP
Type: Planetary nebula
Magnitude: 13.5
Size: 86'' x 70''
Surface brightness: 13.9
Brightest star: 18.1
Classification: 3b
Description: vF,cS,R,r
Notes: H III 696
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 11/12.10.2004 23:10
Instrument: Newton 406/1830 mm
Magnification: 244xFilter: UHC
Field: 12'Seeing: 3
Background sky: 2NE lim mag: 6.5
Visuality: IIIHeight: 0°
Weather: +0°C, good
Description: A faint roundish planetary. A slightly darker center is visible with an UHC-filter at 244x but annularity is ambivalent.
Updated: 22.10.2004 14:53