(IAAC) Obj: Abell 2 (PK 122-4.1) - Inst: 17.5" f/4.5 Dobson


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

Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 1997 Jan 26
Location of site: 60 km south of Berlin / Germany (Lat 52, Elev 50 m)
Site classification: Exurban
Sky darkness: 4 <Bortle Scale (9 worst)>
Seeing: 6 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 17.5" f/4.5 Dobson
Magnification: 132 and 230
Filter(s): OIII
Object(s): Abell 2 = PK 122-4.1
Category: Planetary nebula.
Class: Smooth disk w. Traces of ring structure
Constellation: Cas
Data: mag 14.1 (vis)  size 31"
Position: RA 00:46  DEC +57:57
Easy to find location 1/2 degree WNW from Eta Cas. At 132x (15 mm Panoptic)immediately seen, though very dimm. Most detail at 230x (9 mm Nagler) and OIII-filter. Seems not exacly round, but has an sraight edge in SW. Rest is glowing relatively dimmly but easy to see as homogenous disk. Edge relatively good defined. 
Optional related URLs: http://www.geocities.com/dobsonstathis
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