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(IAAC) IC 2149 - 4.25" F/7.8



Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: IC 2149 (PK 166+10.1; PN G166.1+10.4; ARO 23)
Category: planetary nebula
Constellation: AUR
Object data: Vmag=10.7; Bmag=11.2; 15"x10"; type IIIb+II; central star of
Vmag=10.2; discovered by Fleming in 1906; ELCAT: [OIII, 496+501nm] = 8 x
[Hbeta, 486nm].
RA/DE: 05h56.39m, +4606.2' (2000)
Date and UT of observation: 15 February 1991, 00h00TU
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 with averted vision
Transparency (1 to 5 - best to worst): 1
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Japanese 4.25" (114mm) F/7.8
Magnification: 36-180x
Filters used: no, prism

Description: located at 36x with prism, stellar-like; still too small at
72x, nearly stellar; at 150 and 180x, its nebulous nature is revealed, with
a brighter center and the nebula melting gently with the background sky.



Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
ypothier@abi.snv.jussieu.fr
ypothier@closun.snv.jussieu.fr
http://www.astrosurf.org/cielextreme
http://www.astrosurf.com/cielextreme
http://astrosurf.org/skylink/publi/cielextreme,


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