\begin{table}%t1
\caption{\label{calibrators}The flux calibrators used during the data reduction.}
\smallskip
%\centering
\par
\begin{tabular}{cccc}
\hline
\hline
Wavelength & Name                 & Flux & $\alpha$\\
           &                      & (Jy)&          \\  
\hline 
25~cm &             CTD93         & 5.2 &  --0.5   \\  
85~cm &             3C~295         & 63   &   --0.6 \\  
2~m   &             3C~295         & 95   &   --0.6 \\ 
\hline
\end{tabular} 
\end{table}