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(IAAC) NGC 2371/2 - 4.25" F/7.8
Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 2371-2 (PK 189+19.1; PN G189.1+19.8; ARO 45)
Category: planetary nebula
Constellation: GEM
Object data: Vmag=11.2; Bmag=13.0; 54x35"; type IIIa+VI; central star of
Vmag=14.8 (Bmag=12.5); discovered by Herschel in 1785 (as a PN by Pease in
1917); ELCAT: [OIII, 496+501nm] = 9 x [Hbeta, 486nm].
RA/DE: 07h25.60m, +29°29.5' (2000.0)
Date and UT of observation: 03 Janvier 1998, 01h45TU
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.31 with indirect vision 25% of the time
Transparency (1 to 5 - best to worst): 1
Seeing (1 to 5 - best to worst): 4.5 (stellar stars until 72x)
Moon up (phase?): no
Instrument: Japanese Newtonian 4.25" (114mm), F/7.8
Magnification: 72-150x
Filters used: -
Description: in 1989, I described it as "located at 72x, small nebula,
quite faint, elongated", amazed to have found it because in a french
reference, it was called a 8-inch object; nearly 10 years later in 1998:
"very small PN, very faint, located at 72x/100x, elongated with two
brighter lobes, about 58"x31" in a NE-SW axis, with a mag13 star in the SW
lobe, no central star".
I can provide a scanned drawing of NGC 2371-2 (from the 1998 session) to
anyone who can read the binhex encoding of Eudora (for Mac); just mail me
to try (yann.pothier@fnac.net), it works quite often with other
configurations...
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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