(IAAC) Obj: Abell 6 - Inst: 18" f/4.5 dobsonian

[anonymous at sedna.atmob.org]

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Observation Poster: John Tatarchuk <tatarjj at auburn.edu>

Observer: John Tatarchuk
Your skills: Advanced (many years)
Date/time of observation: 11/18/06, 11/21/06, 11/23/06
Location of site: Conecuh National Forest, South Alabama (Lat , Elev )
Site classification: Rural
Sky darkness: 6.8+, Gegenschein visible <Limiting magnitude>
Seeing: N/A <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 18" f/4.5 dobsonian
Magnification: 75X, 110X
Filter(s): OIII
Object(s): Abell 6
Category: Planetary nebula.
Class: 
Constellation: Cassiopeia
Data: mag 14.3v  size 188"x174"
Position: RA 3:58.9  DEC +64:30
Description:
I had been attempting this object for several years now, as it is one of the 
more difficult Abell planetaries.  At last, success came to me under the 
Conecuh National Forest's dark skies, and I observed it on three nights
there.  After matching the field to the Aladin Previewer finder chart, I was at
last able to repeatedly acquire a VERY faint, circular glow of medium size at
the correct position using 75X (27mm Panoptic) and OIII filtration.  I was 
able to hold this glow in adverted vision for short periods of time(!) before
it would pop out of visibility.  A few faint stars were superimposed across
the face of the object, but their interference was fairly minimal with the 
OIII filter in the system.  Increasing the power to 110X (19mm Panoptic)
seemed to diminish the visibility of the object somewhat.  
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