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(IAAC) Campbell's star PK 64+5 1 (PN G064.7+05.0) - 17.5inch F/4.5
Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 13 August 1998, about 23h20 UT
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
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Coulter 17.5" F/4.5
Magnification: 211x, Rainbow spectroscope
=46ilters used: OIII, Hbeta
Object: Campbell's star PK 64+5 1; He 2-438 (PN G064.7+05.0)
Category: Planetary Nebula
Constellation: CYG
Object data: PHmag=3D9.6; dim.8"x8"; type IV; central * Vmag=3D10.03;
discovered by Campbell in 1894 at Lick with a spectroscope at the 36inch;
ELCAT: [OIII 495+500]=3D0xHbeta!!!
RA/DE: 19h34.8m, +30=B031' (2000); Uranometria 118/Sky Atlas 8
Description: at 211x with spectroscope, beautiful continuous spectrum
showing no color but 4 emission lines identified thanks to Hbeta line and
OIII region provided by the filters; Hbeta is the strongest at 486nm, NIII
at 464nm is following a little fainter and Hgamma at 434nm and NII at 575nm
very faint.
I can provide a scanned drawing of Campbell's star spectrum to anyone who
can read the binhex encoding of Eudora (for Mac); just mail me to try
(ypothier@abi.snv.jussieu.fr), it works sometimes with other
configurations...
Yann Pothier tel: 01 43 41 43 29
11 impasse Canart, 75012 PARIS, FRANCE
Email: ypothier@abi.snv.jussieu.fr
Site : http://pegase.unice.fr/~skylink/publi/cielextreme
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