\begin{table}%T3
\caption{Triple and dual-etalon and prefilter characteristics.}
\label{table:3}      
%\centering
\par
\begin{tabular}{lllll }  
\hline\hline             
  & Scanning & Scanning & Static & Prefilter\\   
  & HRI      & HRI      & LRI    & 4-mirrors \\
\hline                        
 Refractive Index   & 1.0    & 1.0     & 1.0     &        \\
 Aperture (mm)      & 35     & 35      & 35      & 35     \\
 Reflectance        & 0.790  & 0.790   & 0.947   & 0.950  \\
 Order              & 9001   & 2571    & 44      &        \\
 Gap distance ($\mu$m)       & 697    & 200     & 3.42     &        \\
 Coating finesse    & 13     & 13      & 59      &        \\
 ${\it FSR}$ (nm)           & 0.017  & 0.60    & 3.43     &        \\
 {\it FWHM} (pm)          & 2      & 10      & 60      & 3500   \\
 Contrast ratio     & 73     & 73      & 1350    &        \\
\hline                                   
\end{tabular}
\end{table}