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<H3><A NAME="SECTION003511500000000000000">
<TT>TESTS/CCD</TT></A>
</H3>
The command determines the shutter error distribution. The error
distribution is computed as follows. If <IMG
WIDTH="88" HEIGHT="41" ALIGN="MIDDLE" BORDER="0"
SRC="img1166.gif"
ALT="$in\_frm1$">
has a total
reported exposure time of <I>t</I>1 seconds, and the shutter is
opened and closed <IMG
WIDTH="60" HEIGHT="39" ALIGN="MIDDLE" BORDER="0"
SRC="img1167.gif"
ALT="$n\_exp$">
times (including the beginning and
end of the exposure) and <I>img</I>2 has a total exposure time of
<I>t</I>2 seconds, and the shutter is only opened and closed once,
then the final shutter error frame <IMG
WIDTH="88" HEIGHT="41" ALIGN="MIDDLE" BORDER="0"
SRC="img1168.gif"
ALT="$out\_frm$">
is determined by:
<BR><P></P>
<DIV ALIGN="CENTER">
<!-- MATH: \begin{equation}
out\_frm = (in\_frm2*t1 - in\_frm2*t2)/(in\_frm1 - N*in\_frm2).
\end{equation} -->
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><IMG
WIDTH="660" HEIGHT="40"
SRC="img1169.gif"
ALT="\begin{displaymath}out\_frm = (in\_frm2*t1 - in\_frm2*t2)/(in\_frm1 - N*in\_frm2).
\end{displaymath}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(27.1)</TD></TR>
</TABLE>
</DIV>
<BR CLEAR="ALL"><P></P>
An image and a contour plot of the error frame are produced.
<P>
<BR><HR>
<ADDRESS>
<I>Petra Nass</I>
<BR><I>1999-06-15</I>
</ADDRESS>
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