\begin{table}%t1
\caption{Observations of SBS 0909+532 in 2003.\label{tbl-1}}\small
%\centering
\par
\begin{tabular}{c c c}
\hline\hline
Observatory (telescope) & Frames/night (filter) & Observation periods \\
\hline
Calar Alto (1.5 m) & 3 $\times$ 300 s ($V$) + 3 $\times$ 180 s ($R$) & March--June \\
Maidanak (1.5 m) & (3--11) $\times$ 180 s ($R$)  & February, April--May, October--November \\
Wise (1.0 m) & 1 $\times$ 420 s ($R$) & 22 unevenly distributed nights \\
\hline
\end{tabular}
\end{table}