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(IAAC) Obj: Abell 73 (PK 95+7.1) - Inst: 24" f/4.1 Dobson



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Observation Poster: Stathis Kafalis <dobsonstathis@planet-interkom.de>

Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 2001 Oct 18
Location of site: German Alps (Lat 48, Elev 1300 m)
Site classification: Exurban
Sky darkness: 3  <Bortle Scale (9 worst)>
Seeing: 5 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Dobson
Magnification: 168
Filter(s): OIII and UHC
Object(s): Abell 73 = PK 95+7.1
Category: Planetary nebula.
Class: Ring structure 
Constellation: Cepheus
Data: mag 16.5+-1 (vis)  size 73"
Position: RA 20:57  DEC +57:27
Description:
Now with a DSS print position fixed.
At 168x (15 mm Panoptic) and OIII- filter with averted vision I see sometimes 
an extremely faint glow, really very difficult! 
Also with an UHC filter sometimes an extremely faint glow, framed by two faint stars. 105x (24 mm WF) and 260x (9 mm Nagler) with OIII does not work.
Finally I have him!!!

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Optional related URLs: http://www.geocities.com/dobsonstathis
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