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(IAAC) Obj: NGC6309 (Box Nebula) - Inst: 4.5" Homemade Dobson reflector, f/8
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To: IAAC <logs@visualdeepsky.org>
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Subject: (IAAC) Obj: NGC6309 (Box Nebula) - Inst: 4.5" Homemade Dobson reflector, f/8
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From: Ante Perkovic <albireo@vip.hr>
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Date: Mon, 23 Aug 2004 16:45:33 +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: August 11th 2003, 23.30h
Location of site: Tugare, near Split, Croatia (Lat 43.4 N, Elev 250m)
Site classification: Rural
Sky darkness: 5.0 <Limiting magnitude>
Seeing:
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 25x, 48x, 79x
Filter(s): None, UHC
Object(s): NGC6309 (Box Nebula)
Category: Planetary nebula
Class:
Constellation: Oph
Data: mag 11.6 size 20"x10"
Position:
Description:
25x: Invisible with both direct and averted vision. With UHC, I
couldn't see a thing in the entire FOV.
48x: Small, very faint, undoubtedly fuzzy object popped up for a
moment and went back to darkness.
79x: Visible 1/3 of the time. Averted vision helps a little. This
planetary is very faint, small, but undoubtedly fuzzy. UHC just showed
total darkness.
The nebula was 22 deg above the horizon.