\begin{table}%t1
\caption{\label{table:1}Summary of the observations.} 
\par
%\centering
\small
\begin{tabular}{c c c}  
\hline\hline  
\multicolumn{ 1}{l}{\textbf{Date}} & \textbf{N Images} & \textbf{Filter} \\  
\hline  
\multicolumn{ 3}{l}{{\textit {\bf Hubble Space Telescope WFPC2}}} \\
\hline
25 March 2007; 26 March 2007 &          6 &      {\it F953N} \\
\hline
&  	&      {\it F336W} \\
                            &             &      {\it F410M} \\
    1 May 2007              &      6      &     {\it  F502N} \\
                            &             &      {\it F673N} \\                                                      
                            &             &     {\it  F953N} \\
\hline
                            &             &     {\it  F336W} \\
                            &             &     {\it  F410M} \\
   1 May 2007               &      6      &     {\it  F502N} \\
                            &             &     {\it  F673N} \\                                                      
                            &             &     {\it  F953N} \\
\hline
5 June 2007                 &      4      &     {\it  F953N} \\
\hline
                 &            &      {\it F390N} \\
													 &						  &      {\it F410M} \\
 8 July 2008 & 6 &      {\it F437N} \\
 & &     {\it F469N} \\
 & &     {\it  F502N} \\
 & &      {\it F673N} \\
\hline
\multicolumn{ 3}{l}{{\it {\bf IOPW (International Outer Planet Watch)}}} \\
\hline
12 April 2007; 17 April 2007 &         17 &     Continuum  \\
\hline  
\end{tabular}
\end{table}