(IAAC) M 3-35 (PK 071-02 1; PN G071.6-02.3) - 17.5" F/4.5

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 02 August 1995, 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: Coulter 44.5-cm/17.5-inch F/4.5
Magnification: 87-312x
=46ilters used: UHC, OIII, visual spectroscope
Object: M 3-35 (PK 071-02 1; PN G071.6-02.3)
Category: Planetary Nebula
Constellation: CYG
Object data: Vmag=3D14.5; dim.<5" (Innsbruck database: 5.3"x4.1"); type I;
central * Vmag=3D15.7; discovered by Minkowski in 1948; ELCAT: [OIII]
(495+500) =3D12x [Hb] (486nm)
RA/DE: 19h59.30m, +31=B054.5' (2000); Uranometria 119
Description: find with some difficulty with the spectroscope attached at
80x, as a very faint stellar spectra amid continuous stars; at 211x, still
stellar, homogeneous with sharp edges; at 312x and OIII, somewhat nebulous
(3-4" in diameter), of about mag.14.5; visible at 87x when you know exactly
where to look; the OIII filter has a very good response; a mag7 yellow star
is 10' to the E.
I can provide a scanned drawing of M 3-35 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
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
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