(IAAC) Obj: Abell 46 (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 11
Location of site: German Albs (Lat 48, Elev 1450 m)
Site classification: Exurban
Sky darkness: 5 (hazy clouds, foggy horizon) <Bortle Scale (9 worst)>
Seeing: 4 <10-1 Seeing Scale (1 best)>
Moon presence: Minor - crescent or far from object
Instrument: 24" f/4.1 Ultralight Dobson
Magnification: 280
Filter(s): OIII
Object(s): Abell 46= PK 55+16.1
Category: Planetary nebula.
Class: Irregular w. traces of ring structure
Constellation: Lyra
Data: mag 14.3 (vis)  size 63x60"
Position: RA 18:31  DEC +26:55
At this bad transparency at 168x (15 mm Panoptic)with OIII filter only 
faintly seen with averted vision. Round blob of ~1' diameter with quite good defined edge. Still visible without Filter, but more diffuse with ill
defined edge and central star of ~15mag.
Only little contrast gain with UHC and OIII filter and thus much harder
than Abell 43.

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