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(IAAC) Abell 43 (PK 36+17 1; PN G036.0+17.6) - 17.5inch F/4.5



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 30 July 1997, 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): 6.2
Seeing (1 to 5 - best to worst): 2 (stellar stars until 200x)
Moon up (phase?): no
Instrument: Coulter 17.5" F/4.5
Magnification: 211x
=46ilters used: UHC, OIII, Hbeta
Object: Abell 43 (PK 36+17 1; PN G036.0+17.6)
Category: Planetary Nebula
Constellation: OPH
Object data: Vmag=3D14.6; dim.86"x73"; type IIc; central * of Vmag=3D14.7;
discovered by Abell in 1955.
RA/DE: 17h53.6m, +10=B037' (2000); Uranometria 203
Description: at 211x and UHC, medium sized PN, extremely faint even with
filter; round, homogeneous with ill-defined edges; estimated diamter of
65"; central star of mag15 with 2 other mag15 star on S and ENE edges; UHC
and OIII are giving a quite small contrast gain and Hbeta switches the
nebula off; a mag11 star is at 3.5'NW.
I can provide a scanned drawing of Abell 43 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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