(IAAC) NGC 6826 - 4.25" F/7.8

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6826 (PK 083+12.1; PN G083.5+12.7; ARO 13)
Category: planetary nebula
Constellation: CYG
Object data: Vmag=8.8; Bmag=9.8; diam.>25" (27"x24"); type IIIa+II; central
star of Vmag=10.6 (sp.06fp); discovered by W. Herschel in 1793; ELCAT:
[OIII, 496+501nm] = 10 x [Hbeta, 486nm].
RA/DE: 19h44.85m, +5031.3' (2000.0)
Date and UT of observation: 13-14 July 1989, ...
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): ?
Moon up (phase?): no
Instrument: Japanese Newtonian 4.25"/114mm  f/7.8
Magnification: 36-150x
Filters used: -
Description: at 36x, next to 16 Cyg which is a nice double easily split; at
this power, the PN shows only its fuzzy apperance; at 72x, small and round
nebula; with averted vision, the nebula seems larger; at 100x, quite
bright, stellar center apparent, adjacent faint stars visible; at 150x,
blink effect just detectable.
Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE
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