\begin{table}%t4
\caption{\label{tab:grid_fields}The dense stellar fields observed to model the imager non-uniformities (Grid Fields).}
%\centering
\small
\begin{tabular}{lccc}
\hline
\hline
Name & RA & Dec & \\
\hline
 Grid-1 & 06:30:00.00 & 14:20:00.0 & winter field \\
 Grid-2 & 20:00:00.00 & 10:00:00.0 & summer field \\
\hline
\end{tabular}
\end{table}