\begin{table}%ta.1
\caption{\label{tabobs}Detailed list of the observations used. The operation number ({\em 2nd column}) is the number of the observation on that day.}
%\centering
 \small \begin{tabular}{llllll}
\hline \hline
No. & Op. & Wavelength & ddmmyy & Integ. & Size x/y\\
  & no. &~nm &  & time  & in arcsec\\
\hline
1 & 3 & 1565 & 10/08/06 & 30~s & 35/70  \\
2 & 3 & 1565 & 12/08/06 & 10 & 120/70 \\
3 & 1 & 1565 & 14/08/06 & 10 & 200/70 \\
4 & 1 & 1565 & 21/08/06 & 6 & 75/70 \\
5 & 1 & 1565 & 07/09/07 & 5 & 80/70 \\
6 & 7 & 1565 & 07/09/07 & 5 & 80/70 \\
%\hline
7 & 5 & 1083 & 24/07/06 & 6.5 & 75/35 \\
8 & 6 & 1083 & 24/07/06 & 6.5 & 75/35 \\
9 & 7 & 1083 & 24/07/06 & 6.5 & 75/35 \\
%\hline
10 & 6 & 630 & 24/07/06 & 6.5 & 75/87 \\
11 & 7 & 630 & 24/07/06 & 6.5 & 75/87 \\
12 & 8 & 630 & 24/07/06 & 6.5 & 75/87 \\
%\hline
13 & 2 & 396 & 18/07/06 & 6.5 & 40/63 \\
14 & 3 & 396 & 18/07/06 & 6.5 & 40/63 \\
15 & 6 & 396 & 24/07/06 & 6.5 & 75/63 \\
16 & 7 & 396 & 24/07/06 & 6.5 & 75/63 \\
17 & 9 & 396 & 08/12/07 & 3.3 & 100/63 \\
%\hline
18 & -- & 866 & 20/06/07 & 0.25 & 120/177 \\
%\hline
19 & 0 & 854 & 23/09/08 & 100~m~s\tablefootmark{1} & 39/72 \\
20 & -- & 854 & 29/08/09 & 25~s & 60/84 \\
%\hline
21 & 1 & 396 & 24/07/06 & 3.3 & 52\tablefootmark{2}/63 \\
22 & 1 & 630 & 24/07/06 & 3.3 & 52\tablefootmark{2}/63 \\
23 & 1 & 1083 & 24/07/06 & 3 & 52\tablefootmark{2}/35 \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{1}{IBIS data, exposure time per wavelength;}
\tablefoottext{2}{duration in min.}}
\end{table}