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(IAAC) Obj: NGC 6720 = M57 - Inst: 8" f/6 Newtonian alt-az. mount



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Observer: Michael Geldorp
Your skills: Beginner (< one year)
Date/time of observation: 7/21/1998  22.00 UT
Location of site: Alphen ad Rijn, Holland (Lat 52.09 N, Elev )
Site classification: Suburban
Sky darkness: 5.5 <Limiting magnitude>
Seeing: II <I-V Seeing Scale (I best)>
Moon presence: None - moon not in sky
Instrument: 8" f/6  Newtonian alt-az. mount
Magnification: 49X, 98X, 203X, 244X
Filter(s): none
Object(s): NGC 6720 = M57
Category: Planetary nebula.
Class: 
Constellation: Lyr
Data: mag 8.8  size 70" X 150"
Position: RA 18:53  DEC +33:02
Description:
After a rainy day with strong winds the sky cleared up wonderfully with one of
the darkest skies I have seen this year.
M57 was easily found and at low power was a nice smooth disc with a 
somewhat darker center. 
At 244X M57 appeared as a large oval donut-shaped nebula with a darker center,
but not completely dark. The ring itself was very bright and not the same
'thickness' everywhere. The central star was not seen in my 8".
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