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The command determines the shutter error distribution. The error
distribution is computed as follows. If
has a total
reported exposure time of t1 seconds, and the shutter is
opened and closed
times (including the beginning and
end of the exposure) and img2 has a total exposure time of
t2 seconds, and the shutter is only opened and closed once,
then the final shutter error frame
is determined by:
![\begin{displaymath}out\_frm = (in\_frm2*t1 - in\_frm2*t2)/(in\_frm1 - N*in\_frm2).
\end{displaymath}](img1169.gif) |
(27.1) |
An image and a contour plot of the error frame are produced.
http://www.eso.org/midas/midas-support.html
1999-06-15