\begin{table}%T1
   \caption{\label{Tab:Obs} Summary of observations with VISIR and
      NACO at the ESO VLT used in this work.}
   %\centerline
 {
%\renewcommand{\footnoterule}{}
         \begin{tabular}{llllllllll}
            \hline\hline\\[-3.2mm]
            %\noalign{\smallskip}
            Date   &  $t_{\rm start}$ [UTC] &  $t_{\rm stop}$ [UTC] &
            $\lambda_{\rm c}$$^a$
            [$\mu$m] & $\Delta\lambda$$^{b}$ [$\mu$m] &
            $DIT$$^{c}$ [s] & $NDIT$$^{d}$ & $N$$^{e}$ & Seeing$^{f}$ [$''$] \\[-3.2mm]\\
            %\noalign{\smallskip}
            \hline
            %\noalign{\smallskip}
            29 May 2006 &  04:55 &  08:01 & 3.80 & 0.62 & 0.2 & 150 & 108 & $0.6''$ \\
            05 June 2006 &  04:55 &  08:01 & 8.59 & 0.42 & 0.02 & 98 & 1104 & $0.6''$ \\
            06 June 2006 &  04:33 &  07:37 & 8.59 & 0.42 & 0.02 & 98 & 1104 & $1.5''$ \\
            05 June 2006 &  04:55 &  08:01 & 2.18 & 0.35 & 30 & 1 & 62 & $0.6''$ \\
            06 June 2006 &  04:33 &  07:37 &  3.80 & 0.62 & 0.2 & 150 & 1104 & $1.5''$ \\
            %\noalign{\smallskip}
            \hline
         \end{tabular}}
\par
         \medskip
$^a$ Central wavelength of the filter;
$^b$ FWHM of the filter;
$^c$ detector integration time;
$^d$ number of detector readouts averaged online;
$^e$ total number of images of the target that were acquired;
$^f$ average optical seeing conditions during the observations.
\end{table}