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<H2><A NAME="SECTION002253000000000000000">
Association of Calibration Exposures</A>
</H2>
The association process creates an output table that contains the following columns:
<UL><LI>A character column labeled :SCI containing the names of the scientific
frames. These names are extracted from the column :FILENAME of the OST
<LI>A character column labeled `exptype' (i.e DARK, FF, etc) containing the
names of the associated exposures
<LI>An integer column QUAL_`exptype' (i.e QUAL_DARK, QUAL_FF, etc) containing
for each associated frame its quality flag. The calibration matching the
``first choice" set of criteria get a quality of 1 while the exposures
matching only the ``second choice" set of criteria get a quality of 2.
</UL>The commands :<BLOCKQUOTE>
<TT>ASSOCIATE/IMA susi_ost bias bias_rule susi_asso C 2
<BR>
ASSOCIATE/IMA susi_ost ff ff_rule susi_asso A 2</TT></BLOCKQUOTE>associates with each scientific frame two dark exposures by applying the rules
stored in the table bias_rule, two flat field by applying the rules stored in the table
ff_rule and stores the result in the table susi_asso
(Table <A HREF="node386.html#fig:result">15.10</A>).
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<DIV ALIGN="CENTER"><A NAME="fig:result"> </A><A NAME="17504"> </A>
<TABLE>
<CAPTION><STRONG>Table 15.10:</STRONG>
Table of Associated Exposures</CAPTION>
<TR><TD><IMG
WIDTH="900" HEIGHT="221"
SRC="img909.gif"
ALT="\begin{table}
\vspace{-3cm}
\centerline{\vbox{\psfig{figure=fig_do_9.ps,bbllx=3.9cm,bblly=11.3cm,bburx=17.6cm,bbury=16.8cm,width=13.8cm,height=5.6cm}}}
\end{table}"></TD></TR>
</TABLE>
</DIV>
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<DIV ALIGN="CENTER"><A NAME="fig:plot"> </A><A NAME="17510"> </A>
<TABLE WIDTH="50%">
<CAPTION><STRONG>Figure 15.2:</STRONG>
Association of DARK exposures with scientific frames</CAPTION>
<TR><TD><IMG
WIDTH="907" HEIGHT="617"
SRC="img910.gif"
ALT="\begin{figure}
\vspace{1cm}
\centerline{\vbox{\psfig{figure=fig_do_5.ps,bbllx=3.8cm,bblly=11.3cm,bburx=18cm,bbury=19cm,width=14cm,height=8.2cm}}}
\end{figure}"></TD></TR>
</TABLE>
</DIV>
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<DIV ALIGN="CENTER"><A NAME="fig:plotff"> </A><A NAME="17516"> </A>
<TABLE WIDTH="50%">
<CAPTION><STRONG>Figure 15.3:</STRONG>
Association of FF exposures with scientific frames</CAPTION>
<TR><TD><IMG
WIDTH="892" HEIGHT="593"
SRC="img911.gif"
ALT="\begin{figure}
\vspace{0.5cm}
\centerline{\vbox{\psfig{figure=fig_do_10.ps,bbllx...
...bblly=11.3cm,bburx=18.0cm,bbury=19.0cm,width=14.2cm,height=7.9cm}}}
\end{figure}"></TD></TR>
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<ADDRESS>
<I>Petra Nass</I>
<BR><I>1999-06-15</I>
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