\begin{table}%t1
\caption{Relevant parameters for the calibrator stars. \label{table_calib}}
%\centerline
 {\begin{tabular}{lcccc}
\hline\hline
Identifier & Sp. type & $m_{{\rm K}}$ & \LD~$\pm 1 \sigma$ [mas] & Target \\
\hline
\noalign{\smallskip}
HD 787 & K5III &  1.80 & 2.52 $\pm$ 0.03$^{{a}}$ & \tcet\\
%\noalign{\smallskip}
HD 1522 & K1III & 0.92 & 3.36 $\pm$ 0.04$^{a}$ & \tcet\\
%\noalign{\smallskip}
HD 6805 & K2III & 0.88 & 3.44 $\pm$ 0.04$^{a}$ & \tcet\\
%\noalign{\smallskip}
HD 8815 & K0IIIb & 1.48 & 2.76 $\pm$ 0.03$^{a}$ & \tcet, \eeri\\
%\noalign{\smallskip}
HD 12596 & K2III & 3.12 & 1.233 $\pm$ 0.016$^{{b}}$ & \tcet\\
%\noalign{\smallskip}
HD 12685 & M0/1III & 2.83 & 1.450 $\pm$ 0.019$^{{b}}$ & \tcet\\
%\noalign{\smallskip}
HD 16212 & M0III & 1.28 & 3.11 $\pm$ 0.03$^{{b}}$ & \tcet, \eeri\\
%\noalign{\smallskip}
HD 16526 & K4/5III & 2.92 & 1.389 $\pm$ 0.017$^{{b}}$ & \tcet\\
%\noalign{\smallskip}
HD 18071 & G8/K0III & 3.09 & 1.056 $\pm$ 0.014$^{{b}}$ & \tcets, \eeri\\
%\noalign{\smallskip}
HD 29063 & K2III & 2.80 & 1.38 $\pm$ 0.017$^{{b}}$ & \eeri\\
%\noalign{\smallskip}
HD 39853 & K5III & 1.84 & 2.38 $\pm$ 0.027$^{{a}}$ & \eeri\\
%\noalign{\smallskip}
HD 220935 & K5III & 2.6 &  1.963 $\pm$ 0.098$^{{b}}$ & \tcet\\
%\noalign{\smallskip}
HD 221745 & K4III & 2.88 & 1.426 $\pm$ 0.019$^{{b}}$ & \tcet\\
\hline
\end{tabular}}
\par
\smallskip
$^{{a}}$  From \citet{bor02}.
$^{{b}}$  From \citet{mer05}.
\end{table}