\begin{table}%t1
    \caption{Calibrators with spectral type, uniform disk angular
      diameter in $K$ band (in milliarcsecond) and baseline
      \citep{Merand2005}. }
    \label{calib1}
%\centering
\par
      \begin{tabular}{lccc}
        \hline \hline
          & S. type & UD diam. (mas) & Baseline\\  
	\hline
	\object{HD 2952}    & K0III    & $0.938\pm 0.013$ & W1-E1\\ 
	\object{HD 138852}  & K0III-IV & $0.952\pm 0.012$ & W1-E1\\ 
	\object{HD 139778}  & K1III:   & $1.072\pm 0.014$ & W1-E2\\
	\object{HD 186815}  & K2III    & $0.713\pm 0.009$ & W1-E2 \\
	\object{HD 206349}  & K1II-III & $0.869\pm 0.011$ & W1-E1, W1-E2\\ 
	\object{HD 206842}  & K1III    & $1.214\pm 0.016$ & W1-E2 \\
	\object{HD 214995}  & K0III:   & $0.947\pm 0.013$ & W1-E1 \\
	\object{HD 216646}  & K0III    & $1.051\pm 0.015$ & W1-E1, W1-E2 \\
	\object{HD 217673}  & K1.5II   & $1.411\pm 0.020$ & W1-E2 \\
	\hline
      \end{tabular}
\end{table}