\begin{table}%t5
	\caption{Contrast degradation factors and allocations derived in the \mbox{$K$-band} with a 35 spectral resolution. $l_{\rm c}$ is the coherence length and $Airy$ the Airy disk size.}
\small%\centering
		%\centering
\par
\begin{tabular}{c c c c} \hline\hline
   {Allocations}	&   {$\rho$}  & 	 {Contrast} &   {Requirement}\\
& &   {noise} &   {rms}	\\	\hline
 OPD equality & 	0.995	 & 	&  $l_{\rm c}$/19 (4 $\mu$m)\\
 OPD vibration (rms)	& & 	10$^{-3}$	&   $\lambda$/140 (16~nm)\\
 Image overlapping	&  0.99 & 	& 	$Airy$/10 (3$''$)\\
 Overlapping jitters &  &  10$^{-3}$	&  $Airy$/12 (3$''$)\\
 Wavefront quality & 	0.95	 &  & 	  $\lambda$/16 (140~nm)\\
 Defocus	&  0.99	& &  	$\approx$10 mm\\
 Phase delay	&  0.99& & 		17$^\circ$\\
 Differential rotation of& & & \\
 polarization frames&  	0.99	& & 	16$^\circ$\\
 Unequal intensity	&  0.999	& & 	$I_{1}$/$I_{2}$ $\approx$ 0.9\\
 \hline\noalign{\smallskip}
 \textbf{Total}	&   $\approx$0.89&  	$\approx$$10^{-3}$ & 	\\\hline
		\end{tabular}
	\label{contrast}
	\end{table}