[vsnet-campaign 360] Re: QW Ser light curve: interesting humps

[Gianluca Masi <gianmasi@fr.flashnet.it>]

Dear Coplleagues,


>     I suspect this feature may be artifical, i.e. caused by some systematic
> effect (change in atmospheric condition, CCD condition, flat-fielding problem
> etc.), since C2-C1 looks unsteady during this "hump" feature.

This could be the case, even if the CCD was very stable (as the atmopheric conditions),
and was running from 1.5 hours. I also inspected the flat-fielding frame, finding it
regular. 

I hope futher observations will be taken, as the weather turned to bad here.

Regards,
Gianluca

-- 
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* Gianluca Masi                           "Two things fill the soul   *
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* web:  http://vsnet.eurolink.it/comets/                  I. Kant       *
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* Center for Backyard Astrophysics - Italy                            *
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