(IAAC) Obj: Zeta Lyra - Inst: 102 mm f/9.8 Achromatic refractor

Observer: Luis Arguelles
Your skills: Intermediate (some years)
Date/time of observation: July,21,1998 - 21:30 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
Object(s): Zeta Lyra
Category: Multiple star.
Constellation: Lyr
Data: mag 5.73  size 
Position: RA :  DEC :
Zeta Lyra is really easy to locate from Vega. It forms with Vega and Epsilon
Lyra an easy to recognize triangle. 
The components of this double star are wide open and the split is very easy
using only 25x. At this power both components appear with the same color.
Using 100x, colors appear sligthly blue for the main component and maybe
white-yellow for the secondary. I confirm these details at 200x.
Optional related URLs: http://members.tripod.net/~whuyss
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