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(IAAC) Obj: Abell 31 = PK 219+31.1 - Inst: 24" f/4.1 Ultralight Dobson
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To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
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Subject: (IAAC) Obj: Abell 31 = PK 219+31.1 - Inst: 24" f/4.1 Ultralight Dobson
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From: anonymous@sedna.atmob.org
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Date: 19 Jun 2004 12:31:05 -0000
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Observation Poster: Stathis Kafalis <skorpion40@freenet.de>
Observer: Stathis Kafalis
Your skills: Advanced (many years)
Date/time of observation: 2003 Feb. 25
Location of site: German Alps (Lat 48, Elev 1100)
Site classification: Rural
Sky darkness: 2-3 <Bortle Scale (9 worst)>
Seeing: 3 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 24" f/4.1 Ultralight Dobson
Magnification: 105
Filter(s): OIII
Object(s): Abell 31 = PK 219+31.1
Category: Planetary nebula.
Class: very Irregular disk
Constellation: Cancer
Data: mag 12 size >980
Position: RA 08:54 DEC +08:54
Description:
In the 24 mm Wide Field + OIII a huge Planetary! (I would guess 11'
diameter). Round or slightly oval elongated E-W. One dominating 10m5
star in the nebular at SE-edge of a parallelogram, which is not the
central star but is 1-2' eatwads out of the center. The CS itself is
by far fainter, quite difficult to see at this bad seeing.
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Everywhere within the nebula I see faint irregular patches of glow.
One dark patch in the East and another less obvious in the NW. The
W-edge seems crescent shaped (not sure). More details pop up for short
moments, but can't hold them.
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A remarcable Abell! In the POSS plates it is even bigger than I saw it.
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The next night at better seeing I saw 3 small faint background galaxies at 360x.
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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