(IAAC) Obj: Sigma Cap - Inst: 9x63 binoculars

[anonymous at sedna.atmob.org]

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Observation Poster: Stéphane Meloche <stephanemeloche at videotron.ca>

Observer: Stéphane Meloche
Your skills: Intermediate (some years)
Date/time of observation: 2004/10/07 21h12 EDT
Location of site: Ste-Catherine-de-Hatley, Qc, Canada (Lat 45.2083° N, Elev 343 m)
Site classification: Exurban
Sky darkness: 5.9 <Limiting magnitude>
Seeing:  <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 9x63 binoculars
Magnification: 
Filter(s): 
Object(s): Sigma Cap
Category: Multiple star.
Class: 
Constellation: Cap
Data: mag 5.5  size 
Position: RA 20:20  DEC -19:07
Description:
Double star in Capricornus, often used by the past to locate Neptune when the planet was in the surroundings (2000-2001). In the first minutes of observation, the secondary did not appeared. I saw only the primary star, which is of colour white-green. Thereafter, it appeared after a few moments, at the exact PA. Oddly, it disappeared several seconds and is reappeared then. Difficult double star with the 9x63 binoculars.
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