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(IAAC) Obj: NGC 2139 - Inst: 10" f/4.5 Dobsonian



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Observation Poster: Brent Reary <gmbreary@rollanet.org>
Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 02/16/04  02:05 UT
Location of site: Rolla, MO  USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 6.0 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/4.5 Dobsonian
Magnification: 77x, 128x, 154x, 257x
Filter(s): None
Object(s): NGC 2139
Category: External galaxy.
Class: 
Constellation: Lep
Data: mag 11.7p  size 2.2' X 1.9'
Position: RA 06:01  DEC -23:40
Description:
A faint, uniform, oval halo.  There is no detectable brightening toward
the core.  Visible with averted vision at 77x.  At 257x it begins to fade
into the background.  Best seen at 128x-154x.
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