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(IAAC) Obj: Rho Oph - Inst: 4.5" homemade Dobson reflector, f/8
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To: IAAC <logs@visualdeepsky.org>
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Subject: (IAAC) Obj: Rho Oph - Inst: 4.5" homemade Dobson reflector, f/8
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From: Ante Perkovic <albireo@vip.hr>
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Date: Sat, 28 Aug 2004 14:53:12 +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 20th 2003, 21.47h
Location of site: above Sevid, near Trogir, Croatia (Lat 43.5 N, Elev 200m)
Site classification: Rural
Sky darkness: 6.0 <Limiting magnitude>
Seeing:
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 48x, 79, 140x
Filter(s): None
Object(s): Rho Oph
Category: Multiple star
Class:
Constellation: Sco
Data: mag 4.6, 5.0 size 3"
Position:
Description:
- 48x: From time to time, I can see it isn't just a single point of
light, but I'm still not sure is it due to imperfect optics, atmosphere
or Rho Ophiuchi.
- 79x: I can barely resolve it. It's oriented N-S.
- 140: I clearly see it's a N-S oriented double.
The star was 15 deg above the horizon.