\begin{table}%t1
\caption{\label{tab:visir_observations}Summary of the VLT/VISIR observations.}
\par
%%\centering

\par
\begin{tabular}{lcccc}
\hline \hline \noalign{\smallskip}
Target  & Observing epoch   & Airmass & $T_{\rm int}$ & $F_{\nu}$(12.8~\mum)   \\
        &  (Universal time) &         &     [s]      &   N/S  [Jy]  \\
\hline
T Tau     &  2008 Feb. 04 \ \ 02:09  &  1.73  & 143.5 &   7.8/12.1\\
HD 41047  &  2008 Feb. 04 \ \ 02:42  &  1.04  &  54.3 & 5.60        \\
T Tau     &  2008 Feb. 08 \ \ 00:40  &  1.45  & 137.8 &   8.5/16.7\\
HD 75691  &  2008 Feb. 08 \ \ 01:17  &  1.33  &  52.0 & 9.72        \\
\hline
\end{tabular}
\tablefoot {All images were taken through the [NeII]~filter. The last column lists the source brightness at 12.8~\mum. For~the T~Tau observations, fluxes for the north and south components are individually given. The adopted fluxes of the calibrators HD~41047 and HD~75691 are taken from \cite{1999AJ....117.1864C}. The absolute flux calibration is good to~$\approx$10\%.}
\vspace*{5mm}
\end{table}