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(IAAC) Obj: Abell 12 (PK 198-6.1) - 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 (good transparency) <Bortle Scale (9 worst)>
Seeing: 3 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Dobson
Magnification: 168 and 360
Filter(s): OIII
Object(s): Abell 12 = PK 198-6.1
Category: Planetary nebula.
Class: 
Constellation: Orion
Data: mag 12 +-  size 37"
Position: RA 06:02  DEC +09:39
Description:
Directly "riding" 30' west of my Ori. At 168x (15 mm Panoptic) and OIII- filter
immediately and easy to see. Best vieved at 280x (9 mm Nagler)and OIII.
relatively bright disk of approx. 1/2' diameter with a hole in the cernter. 
Sometimes dark patches in the disk? (unsecure). Very sharply defined edge.
Without filter not seen due to the overhelming glare of my Ori.
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Optional related URLs: http://www.geocities.com/dobsonstathis
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