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(IAAC) Obj: M23 - Inst: 4.5" Homemade Dobson reflector, f/8
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To: IAAC <logs@visualdeepsky.org>
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Subject: (IAAC) Obj: M23 - Inst: 4.5" Homemade Dobson reflector, f/8
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From: Ante Perkovic <albireo@vip.hr>
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Date: Mon, 09 Aug 2004 16:37:47 +0200
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User-Agent: Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.0.1) Gecko/20020920 Netscape/7.0
Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: July 18th, 2004. 0:20h
Location of site: Konjevrate, near Sibenik, Croatia (Lat. 43.6 N, Elev.
450m)
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 9.5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 28x, 53x
Filter(s): None
Object(s): M23
Category: Open cluster
Class:
Constellation: Sgr
Data: mag 5.5 size 27'
Position:
Description:
28x: 45 to 50 stars inside 25'x15' ellipse. The stars are moderately
bright,
and almost all are of the same brightness.
53X: 50 to 55 stars inside the same 25'x15' area.
This is a very nice cluster, a real gem compared to some other open
clusters in this area!