[Aavso-photometry] 10 star tutorial

[Jeff Hopkins]

Both eta and zeta should be used as comparison stars. While zeta is a 
long period eclipsing binary, it will be out-of-eclipse in a few days 
and will not eclipse again until July of 2011.

Also, from my photometric observations the V magnitudes are:
eta = 3.23
zeta (out-of-eclipse, which is egressing right about now) i= 3.74.

Jeff

At 02:07 -0700 04/10/2009, keith robinson wrote:
>Hi All
>I've just had a very quick look at the Epsilon Aur 10 star tutorial 
>but noticed straight away that  on page 5 a chart of Auriga has an 
>arrow pointing to Zeta Aur as one of the comparison stars (mag given 
>as 38) rather than Eta.
>
>Clear skies
>
>Keith Robinson
>_______________________________________________

-- 
Jeff Hopkins
HPO SOFT
Counting Photons
http://www.hposoft.com/Astro/astro.html
Hopkins Phoenix Observatory
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