\begin{table}%t1
%\centering
\par
\caption {\label{tab:obs}Log    of    the   observations.    
$R$    is   the    spectral
  resolution. } 
\begin{tabular}{cccccc}
 \hline\hline
 \noalign{\smallskip}
Date & Baseline & Projected & Position & $R$ & \\ 
& & length (m)& angle ($^\circ$)& & \\
 \hline
 05/12/08 & D0-G1 & 69 & 137 & 1500 & FUOr+HBe \\
 07/12/08 & K0-G1 & 89 & 28 & 12~000 & FUOr+HBe  \\
 09/12/08 & K0-G1 & 88 & 24& 12~000 & FUOr+HBe \\
 15/12/08 & U2-U3 & 44 & 35& 1500 &  \\
 & U3-U4 & 62 & 107 & & \\
 & U2-U4 & 86 & 78 & &  \\
 16/12/08 & U1-U2 & 56& 35& 1500 &  \\
 & U2-U4 & 77& 88& &  \\
 &  U1-U4 &120 & 66& & \\
 10/01/10 & D0-G1 & 71 & 133& 1500 & FUOr+HBe \\
 \hline
\end{tabular}
\tablefoot{``FUOr+HBe'' specifies when the binary is in the field of view.}\vspace*{2mm}
\end{table}