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(IAAC) Obj: NGC 4138 - Inst: 10" f/4.5 Dobsonian

To: Internet Amateur Astronomers Catalog <netastrocatalog@atmob.org>
Subject: (IAAC) Obj: NGC 4138 - Inst: 10" f/4.5 Dobsonian
From: apache@galaxy.atmob.org (Apache User)
Date: Fri, 4 Apr 2003 16:02:15 -0500 (EST)
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Observation Poster: Brent Reary <gmbreary@rollanet.org>

Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 04/02/03  02:15 UT
Location of site: Rolla, MO  USA (Lat 37 57N, Elev )
Site classification: Rural
Sky darkness:  <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/4.5 Dobsonian
Magnification: 36x, 68x, 72x, 136x
Filter(s): None
Object(s): NGC 4138
Category: External galaxy.
Class: 
Constellation: CVn
Data: mag 11.3  size 2.6' X 1.7'
Position: RA 12:09.5  DEC +43:41
Description:
An elongated oval halo of uniform brightness.  Aligned NW-SE.  Brightens toward
the core.  There is a faint field star off the N. edge.  In the same low power
field with NGC 4143.  Located with averted vision at 36x.  Bears magnification
well.  Best seen at 136x.


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