(IAAC) NGC 6790 - 4.25" F/7.8

Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Object: NGC 6790 (PK 037-06.1; PN G037.8-06.3; ARO 33)
Category: planetary nebula
Constellation: AQL
Object data: Vmag=10.5; Bmag=10.2; 7"x7"; type II; central star (sp.WR) of
Vmag=13.5; discovered by Pickering in 1882; ELCAT: [OIII, 496+501nm] = 23 x
[Hbeta, 486nm].
RA/DE: 19h23.23m, +0130.8' (2000.0)
Date and UT of observation: 30 August 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: prism

Description: located at 36x with prism thanks to its star-like spectrum,
not too faint; at 150x, still stellar with a companion star to the W.

Yann Pothier
11 impasse Canart, 75012 PARIS, FRANCE

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