(IAAC) NGC 1514 -17.5" F/4.5

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 1514 (PK 165-15.1; PN G165.5-15.2; ARO 21)
Category: planetary nebula
Constellation: TAU
Object data: Vmag=10.9; Bmag=10.8; 120x90"; type III+II; central star of
Vmag=9.4; discovered by Herschel in 1787; ELCAT: [OIII, 496+501nm] = 13 x
[Hbeta, 486nm].
RA/DE: 04h09.20m, +3047.' (2000.0)
Date and UT of observation: 31 October 1994, 23h30TU
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): 1
Seeing (1 to 5 - best to worst): 4
Moon up (phase?): no
Instrument: Coulter 445mm/17.5" F/4.5
Magnification: 145-312x
Filters used: OIII, UHC
Description: at 145x, easy, bright with OIII filter, large, about 210x192",
oval in a NW-SE axis; annular (ring thickness of about 52"); central star
of mag10 obvious; UHC gives a good contrast gain and OIII a very very good
one; brighter areas on a 1/5th quadrant to the SE of the central star and
on a 1/6th quadrant to the NW; mag14 star 35" from the N edge;
the PN appears annular with the follwing combinations:
with averted vision: 45x+OIII, 74x+UHC, 145 without filter,
with direct vision at 87x+OIII, 312x without filter.
I can provide a scanned drawing of NGC 1514 to anyone who can read the
binhex encoding of Eudora (for Mac); just mail me to try
(ypothier@abi.snv.jussieu.fr), it works quite often with other
Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
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