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(IAAC) Obj: Albireo (Beta Cygni) - Inst: 102 mm f/9.8 Achromatic refractor



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Observer: Luis Arguelles
Your skills: Intermediate (some years)
Date/time of observation: July,22,1998 - 23:15 UT
Location of site: Santander - Spain (Lat , Elev )
Site classification: Suburban
Sky darkness: 4.5 <Limiting magnitude>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 102 mm f/9.8 Achromatic refractor
Magnification: 25x, 50x, 100x, 200x
Filter(s): 
Object(s): Albireo (Beta Cygni)
Category: Multiple star.
Class: 
Constellation: Cyg
Data: mag 3.08  size 
Position: RA :  DEC :
Description:
It's not strange that everyboy speaks wonderful things about this double star.
The main component appears yellow-orangeish at 25x, while the secondary shows
blue or blue-greenish coloration. This contrast of colors is amazing. Of
course, it's one of my favourite double stars.
Using 200x I can perfectly observe it as orangeish and blueish. My wife sees
the second component as red, not orange. Maybe women had a "shift" towards red
or men have a "shift" towards blue. I'm not sure of this. Probably the
perception of color is something that *always* varies from person to person.
Without doubt the best view is obtained at just 50x. Albireo appears as a King
and a Queen in the middle of the wonderful star clouds of Cygnus.
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Optional related URLs: http://members.tripod.net/~whuyss
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