\begin{table}%t1
\caption{The parameters of two telescopes used in the observations
of 134340~Pluto between 1995 and 2004.}\label{tab1}
%\centering
\small
\begin{tabular}{lll}
\hline\hline
\bf Primary mirror diameter\rm & ~\bf 1.60 m \rm  & ~~\bf 0.60 m \rm \\
Scale in focal plane           & 13$''$/mm          &  32$''$/mm      \\
Focal length                   & 15,6   m        &  8,2  m       \\
Cassegrain focal ratio         & f/10            &  f/13,5       \\
\hline
\end{tabular}
\end{table}