Iiro's DeepSky Sketches

Name: NGC 6781Other name: PK 41-2.1
RA: 19h 18.5m DEC: +6° 32'
Constellation: AQL
Type: Planetary nebula
Magnitude: 11.8
Size: 111'' x 109''
Surface brightness: 12.8
Brightest star: 16.9
Classification: 3b(3)
Description: F,L,R,vsbM disc
Notes: H III 743,PK41-2.1,opposite dark lane from Altair
Observer: Iiro Sairanen
Location: Ahola, Joutseno, Finland
Date: 21/22.8.2004 1:20
Instrument: Newton 406/1830 mm
Magnification: 244xFilter: -
Field: 12'Seeing: 3
Background sky: 2NE lim mag: 6.4
Visuality: IIHeight: 26°
Weather: +12°C, moist
Description: A large annular planetary nebula. The west edge is brighter and sharper than other ring. I didn't see a central star.
Updated: 25.8.2004 21:04