(IAAC) Obj: Abell 43 (PK 55+16.1) - Inst: 24" f/4.1 Ultralight Dobson


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

Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 2001 June 10
Location of site: 60 km south of Munich / Germany (Lat 48, Elev 750)
Site classification: Exurban
Sky darkness: 4-5 ( foggy horizon) <Bortle Scale (9 worst)>
Seeing: 5 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Ultralight Dobson
Magnification: 168 and 280
Filter(s): OIII
Object(s): Abell 43 (PK 55+16.1)
Category: Planetary nebula.
Class: Smooth disk w. traces of ring structure
Constellation: Ophiuchus
Data: mag 14.6 (vis)  size 80x74"
Position: RA 17:53  DEC +10:37
At this bad transparency at 79x(32 mm WF) 3 stars in a small triangle embedded
in delicate faint diffuse glow. 
At 168x (15 mm Panoptic) with OIII filter a lelatively bright planetary of
~1-1.5' diameter. Round and mostly homogeneous, edge slighly brigther than center.
At 280x (9 mm Nagler) with OIII-filter patchy structure, wow! A dark wedge at 
the east edge penetrating into the center and may be another one from 
the south. Reminds me to the Trifid. 
Good contrast gain with OIII filter. 

Optional related URLs: http://www.geocities.com/dobsonstathis
** This observing log automatically submitted via the Web from:
To stop receiving all 'netastrocatalog' lists, use the Web forms at: