\begin{table}%t3
\caption{Chromatism effects synthesis.}
\label{spectralR}
%\centering
\small
\begin{tabular}{ccccc}
\hline
\hline
\textbf{$\Delta \lambda \slash \lambda$ (\%)} &  $FPM (\lambda/D)$ & $FPM_{\lambda_{\rm max}}$ ($\lambda/D$) & $F_1$ & $F_2$ \\
\hline
0.3 & 4.70 & 4.70 &  1.0 & 1.0 \\
1.4 & 4.70  & 4.73 & 1.1 & 1.1 \\
2  & 4.70 & 4.75 & 1.1 &  1.1 \\
5  & 4.80  & 4.82 & 1.6 & 1.6 \\
10 & 5.00 & 4.94 & 2.6 & 3.7 \\
20 & 5.30 & 5.20 & 3.7 & 14.6 \\
50  & 5.90  & 5.87 & 26.3 & 180.9 \\
\hline
\end{tabular}
\end{table}