(IAAC) Obj: Abell 53 (PK 50-0.1) - 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 Aug 23
Location of site: Austrian Alps (Lat 47, Elev 2000 m)
Site classification: Rural
Sky darkness: 2-3 <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 53 = PK 50-0.1
Category: Planetary nebula.
Class: Ring structure
Constellation: Aquila
Data: mag 15.5+- (vis)  size 31"
Position: RA 19:06  DEC +06:24
At 79x (32 mm WF) without filter nothing. At 168x (15 mm Panoptic) + 
OIII- filter pops planetary into view as a round homogenous disk of 
approx. 1/2' diameter. Relatively good gefined edge. Easily visible but only with averted vision. An 28x (9 mm Nagler) at first moment more difficoult to see, but after some time more convenient view. No ring seen.
Optional related URLs: http://www.geocities.com/dobsonstathis
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