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(IAAC) Egg Nebula (PK 080-06 1) - 8" F/10
Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 22 July 1993, about 23h00 UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.4
Seeing (1 to 5 - best to worst): 2
Moon up (phase?): no
Instrument: Meade SCT 8"/203mm F/10
Magnification: 145x
=46ilters used: UHC, OIII
Object: Egg Nebula (PK 080-06 1)
Category: Proto-Planetary Nebula (ie PN acting spectroscopically as a
reflection nebula)
Constellation: CYG
Object data: Vmag=8912; dim.19"x7"; central * CRL 2688 (V1610 Cyg,
Bmag=3D5.8-6.3?) of Vmag=3D12.25;
RA/DE: 21h02.30m, +36=B042.0' (2000); Uranometria 121, Sky Atlas 9
Description: small and bright nebulosity like a fuzzy star at 145x; OIII
and UHC filters are of no use; at 312x, it looks like a double star
(mag11.5+13.0 at about 5"SSW) embedded in a fuzzy glow; estimated
dimensions of 10"x5" in a NNE-SSW axis; a mag12 star is at 30"W and a
mag8.5 star is at 75"W (SAO 70809).
I can provide a scanned drawing of Egg Nebula 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://astrosurf.com/skylink/publi/cielextreme/index.html
http://www.astrosurf.com/skylink/publi/cielextreme
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