\begin{table}%t1
\caption{\label{table:bright_ring_separations}Angular separations of the intensity peak and first five bright rings of the Airy diffraction pattern.}             
%\centering
\par
\begin{tabular}{c c c c c c c}        
\hline \hline& Intensity & 1st bright & 2nd bright & 3rd bright & 4th bright & 5th bright \\ 
& peak & ring & ring & ring & ring & ring \\ 
\hline
 Angular separation & \multirow{2}{*}{$0.00$} & \multirow{2}{*}{$1.64$} & \multirow{2}{*}{$2.68$} & \multirow{2}{*}{$3.70$} & \multirow{2}{*}{$4.71$} & \multirow{2}{*}{$5.71$} \\ 
 in $\lambda/D$ & & & & & & \\ 
 \hline
\end{tabular}
\end{table}