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(IAAC) Obj: A4712 (Galaxy Cluster) - Inst: 13" f/5.6 Newt

To: Internet Amateur Astronomers Catalog <netastrocatalog@atmob.org>
Subject: (IAAC) Obj: A4712 (Galaxy Cluster) - Inst: 13" f/5.6 Newt
From: Steve Coe <scoeandlross@sprintmail.com> (via Lew Gramer)
Date: Wed, 21 Jul 1999 01:09:25 -0400
Cc: Steve Coe <scoeandlross@sprintmail.com>
Reply-To: netastrocatalog-announce@atmob.org
Sender: owner-netastrocatalog@atmob.org


Observer: Steve Coe
Your skills: Advanced (many years)
Date/time of observation: 16 April 1999 
Location of site: Sentinel Star Gaze, AZ (Lat n, Elev m)
Site classification: Rural
Sky darkness: 8 (1-10, 10 best)
Seeing: 7 (1-10, 10 best)
Moon presence: None - moon not in sky
Instrument: 13" f/5.6 Newt
Magnification: 150x
Filter(s): None.
Object(s): A4712 (Galaxy Cluster)
Category: Galaxy cluster.
Class: ?
Constellation: Ant
Data: mag 12.5 (egs)  size 90'?
Position: 10:30? -35:20?
Description:
Sentinel Star Gaze 99 - Big Success
--
I move on to a galaxy group in Antlia, Abell 4712. Even this
group of distant galaxies that is only 10 degrees above the
horizon shows six galaxies that are pretty easy seen at 150X.
--
[I was unable to find a catalog entry for A4712 (presumably
from the expanded Southern catalog published in the 1970s?),
so I have only taken a stab at its position and data. Steve,
can you confirm or correct this data for me? -Lew Gramer]

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