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(IAAC) Obj: Abell 3 (PK 131+2.1) - 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 12
Location of site: German Alps  (Lat 48, Elev 1300 m)
Site classification: Exurban
Sky darkness: 3 <Bortle Scale (9 worst)>
Seeing: 6 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Dobson
Magnification: 105 and 280
Filter(s): OIII
Object(s): Abell 3 = PK 131+2.1
Category: Planetary nebula.
Class: Irregular disk w. traces of ring structure
Constellation: Cas
Data: mag 14.9 (vis)  size 60"
Position: RA 02:12  DEC +64:09
Description:
At 105x (24 mm WF) at this position a triangle with a double star at the SW corner. At 280x (9 mm Nagler) and OIII- filter west of this double planetary seen as a faint diffuse considerably large blob, approx. 3x as big as double separation. No oher details visible. Difficult to see at all and only with averted vision, but sure.

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