[Aavso-photometry] HD37605 data request

[Jean-Luc]

Geir,

Many thanks for your clear answer. If I may sill ask something : where 
can I find a book (or online ref) describing Data Analysis for astronomy 
- photometry purpose ? Any recommendation ?

Thanks again,
Jean-Luc


Geir Klingenberg wrote:

>On Sun, 02 Jan 2005 01:14:03 +0100, Jean-Luc <jeanlucla at wanadoo.fr> wrote:
>  
>
>>If I do not stack, and get a stddev for each serie, how is scintillation
>>taken into account  ? and how do I calculate the final error ? 
>>    
>>
>
>Jean-Luc,
>
>That's the nice thing, it is already accounted for. All error sources
>are included in the standard deviation because it is based on the data
>itself, it is just a numerical expression of the variation about a
>mean. If one uses an approach based on SNR and scintillation one tries
>to model the phenomenon causing the scatter and these models are based
>on more or less valid assumptions. Also, SNR and scintillation are
>just two of the error sources although probably two of the most
>important ones.
>
>You should get a lower std from your 17 data points than from your 170
>initial data points. The reason to average your measurements is to
>average, that is reduce, the errors from scintillation and other error
>sources, and this is reflected in a lower std. So you can simply
>report the std of your 17 data points as the final error.
>
>Geir
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