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(IAAC) Obj: NGC 6543 - Inst: 15 inch Obsession f4,5
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To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
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Subject: (IAAC) Obj: NGC 6543 - Inst: 15 inch Obsession f4,5
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From: anonymous@sedna.atmob.org
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Date: 17 Aug 2004 14:52:05 -0000
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Observation Poster: Armin Hermann <burmeseinn@yahoo.com>
Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 16 Aug 2004
Location of site: Sangkhlaburi, Thailand (Lat 15°N, Elev 200m)
Site classification: Exurban
Sky darkness: better 5mag <Limiting magnitude>
Seeing: 9+ <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15 inch Obsession f4,5
Magnification: 131 and 342x
Filter(s): none
Object(s): NGC 6543
Category: Planetary nebula.
Class:
Constellation: Dra
Data: mag 8,1v size 15x20"
Position: RA : DEC :
Description:
Impressive! At 131x NGC6543 appears as a very bright blue oval (15x20”) of
uniform brightness. The faint outer shell is easily visible fading away the
further away it is from the bright inner disk. The bright 10,9magv central star
is not visible at this magnification; it seems to be flooded by the bright
light of the nebula. At 342x the CS is now directly visible but appears fainter
than it actually is. The bright inner disk shows signs of annularity. The
diameter of the halo is at least 70”. Very beautiful!
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