(IAAC) NGC 6543 - 4.25" F/7.8

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6543 (PK 096+29.1; PN G096.4+29.9; ARO 6, VV 143)
Category: planetary nebula
Constellation: DRA
Object data: Vmag=8.1; Bmag=8.8; 22"x16"; type IIIa+II; central star of
Vmag=10.9; discovered by Herschel in 1786; ELCAT: [OIII, 496+501nm] = 9 x
[Hbeta, 486nm].
RA/DE: 17h58.58m, +6637.9.0' (2000.0)
Date and UT of observation: 30 August 1989, ...
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.0
Transparency (1 to 5 - best to worst): 1
Seeing (1 to 5 - best to worst): ?
Moon up (phase?): no
Instrument: Japanese Newtonian 4.25"/114mm  f/7.8
Magnification: 36-150x
Filters used: -
Description: at 36x, nebulous star; at 72x, larger, more nebulous with a
companion-star of mag10 that is of needed help when focusing; at 100x, nice
planetary, bright and homogeneous; at 150x, still homogeneous, but slightly
oval N-S.
I can provide a scanned drawing of NGC 6543 to anyone who can read the
binhex encoding of Eudora (for Mac); just mail me to try
(yann.pothier@fnac.net), it works quite often with other configurations...
Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
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