\begin{table}%T2
  \caption{\label{calparam}Star  and  calibrator properties.    } 
\small%\centering
\par
  \begin{tabular}{c c c c c c}
    \hline
    \hline\noalign{\smallskip}
    Star & $V$ &$K$ & $H$ & Spectral type & Diameter [mas] \\
    \hline 
    HD~163296 & 6.9& 4.8 & 5.5 & A1Ve & / \\
    HD~156897 & 4.4 & 3.1 & 3.1 & F2 & 0.8 $\pm$ 0.2\\ 
    HD~160915 & 4.9 & 3.8 & 3.9 & F5V & 0.7 $\pm$ 0.1\\ 
    HD~163955 & 4.7 & 4.5 & 4.6 & B9V & 0.3 $\pm$ 0.2\\ 
    \hline    
  \end{tabular}
  \tablefoot{The  latter have  been
    chosen                        with                       SearchCal
    (\protect\url{http://www.jmmc.fr/searchcal_page.htm}) and getCal (\protect\url{http://mscweb.ipac.caltech.edu/gcWeb/gcWeb.jsp}).}
\end{table}