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(IAAC) Obj: NGC 3766 - Inst: 250mm f5.6 Dobsonian
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To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
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Subject: (IAAC) Obj: NGC 3766 - Inst: 250mm f5.6 Dobsonian
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From: anonymous@sedna.atmob.org
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Date: 6 Dec 2005 05:35:45 -0500
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Observation Poster: Andrew Wood <bandawood@bigpond.com>
Observer: Andrew Wood
Your skills: Advanced (many years)
Date/time of observation: 27 June 1998; 0940UT
Location of site: mt Keira (Lat -34, Elev 150E)
Site classification: Exurban
Sky darkness: 5.5 <Limiting magnitude>
Seeing: 3 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 250mm f5.6 Dobsonian
Magnification: 55
Filter(s):
Object(s): NGC 3766
Category: Open cluster.
Class:
Constellation: Cen
Data: mag 5.3 size 12 min
Position: RA 11:36 DEC -61:37
Description:
Rich and bright. Can be seen with the naked eye. About 30 min across, Orange star just outside the cluster border.
I have also observed this cluster on several other occasions:
May 4 1991; Lake Heights (SUBURBAN)
60mm f15 refractor
Notes: About double the size of the Gem Cluster (NGC 3293) and similar in appearance. A few bright unnassociated stars make it a nice field
22 Feb, 1998 00:45 am
IAS Site, Mt Keira, under good conditions
Orion 10" and 26mm Plossl
About 20' across; a concentrated group of similarly bright stars surrounded by an extremely starry field. Three bright (non-cluster) stars form an extended right-angled triangle which stretches across most of the field.
Feb 28, 1997, Farmborough Heights (SUBURBAN)
Somewhat head (bust) shaped
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