\begin{table}%t1
%\centering
\par
\caption{Observed  colors of the 7 stars stars visible in NIR images.}  \label{tab1}
\begin{tabular}{cccc}
\hline\hline
Star Nb. &   $J_{\rm mag}$   & ($J-H$)     &  ($H-K_{\rm s}$)   \\
\hline
Star 1(A) &   13.63	   &   0.12	 & 0.24     \\
Star 2    &   14.16	   &   0.32      & 0.97	     \\  
Star 3(B) &   14.34	   &   0.07      & 0.12	     \\
Star 4    &   14.50	   &   1.01	 & 1.26     \\
Star 5    &   16.25	   &   0.93	 & 0.67      \\
Star 6    &   16.26	   &   1.01	 & 0.71     \\ 
Star 7    &   16.35	   &   1.04	 & 1.60      \\
 \hline
\end{tabular}
\end{table}