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(IAAC) Obj: Tr 33 - Inst: 4.5" Homemade Dobson reflector, f/8
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To: IAAC <logs@visualdeepsky.org>
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Subject: (IAAC) Obj: Tr 33 - Inst: 4.5" Homemade Dobson reflector, f/8
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From: Ante Perkovic <albireo@vip.hr>
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Date: Wed, 11 Aug 2004 12:39:15 +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 22nd 2004., 1:45h
Location of site: Kasjuni beach, Split, Croatia (Lat. 43.5 N, Elev. 0m)
Site classification: Suburban
Sky darkness: 5.0 <Limiting magnitude>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 25x, 48x, 79x
Filter(s): None
Object(s): Tr 33
Category: Open cluster
Class:
Constellation: Sgr
Data: mag 6.9 size 9'
Position:
Description:
25x: Although very small, it showed all its stars at this low power.
The cluster is at the end of 20' long chain of three 7-mag stars. The
southernmost star in chain belongs to the cluster. This star is at the S
end of 4'-long slightly curved arch with 3 more stars, with the
northernmost star barely visible. This short arch is the cluster.
48x and 79x: All 4 stars clearly visible, but no new details.
Tr33 is 90' W-NW of M25.