(IAAC) Obj: NGC 6543 - Inst: 15 inch Obsession f4,5

[anonymous at sedna.atmob.org]

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Observation Poster: Armin Hermann <burmeseinn at 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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