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(IAAC) NGC 3242 - 4.25" F/7.8

To: netastrocatalog@atmob.org
Subject: (IAAC) NGC 3242 - 4.25" F/7.8
From: Yann Pothier <yann.pothier@fnac.net>
Date: Fri, 12 Nov 1999 13:21:06 +0100
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Sender: owner-netastrocatalog@atmob.org

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 3242 (PK 261-32.1; PN G261.0+32.0; ARO 4)
Category: planetary nebula
Constellation: HYA
Object data: Vmag=7.7; Bmag=8.6; 40"x35"; type IIIb+IV; central star of
Vmag=11.4; discovered by W. Herschel in 1785; ELCAT: [OIII, 496+501nm] = 17
x [Hbeta, 486nm].
RA/DE: 10h24.80m, -18°38.0' (2000.0)
Date and UT of observation: 22 February 1990, ...
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): 2
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Japanese Newtonian 4.25"/114mm  f/7.8
Magnification: 36-150x
Filters used: -

Description: at 36x, nebulous star, bright, contrasting with pinpoint
nearby stars; at 72x, brighter center detached on the shell; at 100x,
slightly oval, star near; at 150x, clearly oval with large brighter center.



Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
yann.pothier@fnac.net
http://www.astrosurf.org/cielextreme
http://www.astrosurf.com/cielextreme
http://astrosurf.org/skylink/publi/cielextreme,


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