(IAAC) Obj: M57 the "Ring Nebula" - Inst: Orion 6" Dob
Observer: William L. Schart
Your skills: Intermediate (some years)
Date/time of observation: 6/8/99 10:35 pm CDT
Location of site: Killeen, TX (Lat 31 N, Elev 600 ft)
Site classification: Suburban
Sky darkness: 4 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: Orion 6" Dob
Magnification: 32x, 72x, 120x, 144x, 240x
Filter(s): Orion Ultrablock
Object(s): M57 the "Ring Nebula"
Category: Planetary nebula.
Data: mag size
Position: RA : DEC :
I experimented with various cobinations of EPs, barlow and filter. This nebula
was visible even at 32x, and at 48x, without the filter, the "hole" was visible.
The best combination seemed to be the 144x (17mm EP, 2x barlow) with the filter.
Although the filter did not make the nebula any easier to see, it did increase
the amount of detail visible. The "hole" was much more appearant.
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