\begin{table}%t1
      \caption{\label{obs}Journal of the observations.}
        \small%\centerline
{
\begin{tabular}{lllll}
  \hline         
\hline \noalign{\smallskip}
       &       & Total exp. time$^{a}$ \\ 
Filter &     Date (UT) &   (No of frames$^{b}$) \\ 
\hline\noalign{\smallskip}
\hnii   &     31/07/03 & 2400 NE (1)\\
\hnii   &     31/07/03 & 4800 SE (2)\\ 
\hnii   &     01/08/03 & 4800 SW (2)\\ 
\hnii   &     01/08/03 & 4800 NW (2)\\ 
\hnii   &     02/08/03 & 4800 NE (2)\\
\hline
\sii    &     31/07/03 & 4800 NE (2)  \\
\sii    &     31/07/03 & 4800 SE (2)  \\
\sii    &     01/08/03 & 4800 SW (2)  \\
\sii    &     01/08/03 & 4800 NW (2)  \\
\sii    &     02/08/03 & 4800 SE (2)  \\
\sii    &     02/08/03 & 2400 NE (1)  \\
\hline
Cont red &31/07-02/08/03  & 4320 (18)\\
\hline
\end{tabular}}
\smallskip
${^a}$ Total exposure times in s.
${^b}$ Number of individual frames.
\end{table}