\begin{table}%t2
  %\centering
\par
    \caption{\label{tab2}VEGA/CHARA $V^2$ measurements performed on 2009.07.27 and 2009.08.26. 
         } 
  %\centering
\par
  \begin{tabular}{lcccc}
    \hline\hline
    \noalign{\smallskip}
    Date & Wavelength & Baseline & $V^2$ & $V^2$ error \\
    &[nm] & [m]&  &  \\
    \hline
2009.07.27 & 654 & 32.97 & 0.421 & 0.019  \\
2009.07.27 & 657& 32.97 &  0.444 & 0.024 \\
2009.07.27 & 630 & 32.97 & 0.376 & 0.016 \\
2009.08.26 & 654 & 33.19 & 0.418 & 0.051 \\
\par
    \hline
\par
 \end{tabular}
 %\vspace*{-8mm}
 \end{table}