(IAAC) Obj: Abell 18 = PK 216-0.1 - Inst: 24" f/4.1 Ultralight Dobson

Observation Poster: Stathis Kafalis <skorpion41@freenet.de>
Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 2002 Mar. 13
Location of site: German Alps (Lat 48, Elev 1300)
Site classification: Exurban
Sky darkness: 3 <Bortle Scale (9 worst)>
Seeing: 4 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Ultralight Dobson
Magnification: 170x, 280x
Filter(s): OIII
Object(s): Abell 18 = PK 216-0.1
Category: Planetary nebula.
Class: Smooth disk
Constellation: Monoceros
Data: mag 17p5  size 75"
Position: RA 06:56  DEC -02:53
Some nights ago could not find it just with Uranometria.
This time pinned down position with DSSII red print.
With 15 mm Panoptic (168x)+ OIII- filter w. averted vision
from time to time.  I see a oval ghosly shining brighness of
approx. 1' diameter, slighly elongated SE-NW. Only 10% of the
time detected.  3 faint stars involved in the nebula.
With 9 mm Nagler (280x) + OIII also seen, but even more
difficult. With 24 mm WF (105x) no chance at all.
This is a really tough one! 
Optional related URLs: http://www.stathis-firstlight.de/deepsky/abell.htm
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