(IAAC) Obj: M17 (Omega nebula) - Inst: 4.5" Homemade Dobson reflector, f/8
Ante Perkovic
albireo at vip.hr
Wed Aug 11 06:36:03 EDT 2004
Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: July 22nd 2004., 0:45h
Location of site: Kasjuni beach, Split, Croatia (Lat. 43.5 N, Elev. 0m)
Site classification: Suburban
Sky darkness: 5.0 <Limiting magnitude>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 25x, 48x, 79x
Filter(s): None
Object(s): M17 (Omega nebula)
Category: Emission nebula
Class:
Constellation: Sgr
Data: mag 6.0 size 11'
Position:
Description:
25x: Very bright nebula, 8'x2' in size, extended SE-NW, with
additional bright area S of NW end that extends to the nearby 9.5-mag
star. It looks very much like "Nike" logo. After few minutes, I noticed
very faint diffuse halo, that makes nebula around 50% larger. Just 5' to
the N is something like open cluster, as large as bright part of the
nebula. This grouping contains around 10 moderately bright stars, all of
the same brightness.
48x: Nebula stays as large as before, but looks little wider at the NW
end.
79x: Nothing new
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