[vsnet-chat 4625] Re: [CCD-astrometry-photometry] Re: Photometry of variables involved with other stars

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

Hi Rudolf,
I agree with you, but in some cases, and that of V446 Her actually is a
good lesson, the star are inside the same seeing disk/pixel scale. And I
am really interested in such a case.

Thank you for your kind input.

Gianluca


Rudolf Novak wrote:
> 
> Dear Gianluca,
> 
> IMHO I'd prefer rather PSF photometry and reporting those PSF magnitudes.
> 
> Have a nice day
> 
> Rudolf
> 
> Gianluca Masi wrote:
> 
> >Dear Colleagues,
> >I've been observing V446 Her, as part of the 2001 campaign presented to
> >the VSNET by Nogami et al. But, you know, that variable is involved with
> >a couple of stars, and while performing photometry with a normal
> >equipment you have to measure those three stars (the variable + two
> >normal objects) as a whole. Indeed, that is the strategy suggested by
> >the campaign coordinators (they take care to remove the effect of the
> >two stars), but I was wondering how one has to do in general, for
> >example if she/he would like to report data to VSNET. Can she/he report
> >the magnitude of the "complex" object (the three star in the case of
> >V446 Her) or there is a better idea?
> >
> >Sincerely,
> >Gianluca
> >
> 
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-- 
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