(IAAC) Obj: Abell 3 (PK 131+2.1) - Inst: 24" f/4.1 Dobson


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
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.

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