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(IAAC) Obj: Abell 36 = PK 318+41.1 - Inst: 24" f/4.1 Ultralight Dobson



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Observation Poster: Stathis Kafalis <skorpion41@freenet.de>
Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 2002 Mar. 10
Location of site: German Alps (Lat 48, Elev 950)
Site classification: Exurban
Sky darkness: 3- <Bortle Scale (9 worst)>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Ultralight Dobson
Magnification: 168x
Filter(s): OIII
Object(s): Abell 36 = PK 318+41.1
Category: Planetary nebula.
Class: Irr. w. traces of ring structure
Constellation: Virgo
Data: mag 11v8  size 400"
Position: RA 13:41  DEC -19:53
Description:
With the 15 mm Panoptic (168) there is at this position a 11-12 mag
star, which must be the central star.
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With OIII-filter around this star a very large disk (approx. 4'
diameter) becomes visible. The 1/3-rd inner part is dimmer, so all in
all it shows a slight ring structure.
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But it is not just a ring! I can see irregular dark structures all
over the disk!  These patches are obvious to detect, but quite
difficult to localize, as they a visible with averted vision only.
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Again, a remarkable Abell!
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Optional related URLs: http://www.stathis-firstlight.de/deepsky/abell.htm
** This observing log automatically submitted via the Web from:
  http://www.visualdeepsky.org/enter-log.html