\begin{table}%t2
\caption{List of AMBER spectrograph modules with acronym definition and functions.}
\small%\centering
\par
		\begin{tabular}{l l } \hline\hline
 \textbf{Optical elements} &	\textbf{Functions}	\\	\hline
 SPG-INW & Input slit.\\
 Input Wheel & Image cold stop.\\ \hline
 SPG-CSY & Spectrograph optics cooling.\\
 Cooling System & Vacuum, temperature, and nitrogen\\
& level control.\\ 
& Thermal flux reduction.\\ \hline
 SPG-ISD & Cold stop for the spatial \\
 Imaging and Stopping  & filter mode (thermal flux reduction).\\
 Device& Technical operations (wide diaphragm).\\ 
& Calibration (dark).\\ 
& Beam collimation.\\ \hline
 SPG-PMW & Thermal flux reduction.\\
 Pupils Masks Wheel & Beam size definition.\\ \hline
 SPG-IPS & Thermal flux reduction.\\
 Interferometric Photometric & Beam splitting.\\ 
 Splitter & Beams deviation.\\ 
& Photometric images deflection on DET.\\ \hline
 SPG-DIU & Spectral dispersion.\\
 Dispersion Unit & Spectral wavelength selection.\\
& Spectral resolution selection.\\ 
& Spectral modulation.\\ \hline
 SPG-CHA & Beam combination.\\
 Camera& Beam focalization.\\
& Sampling.\\ \hline
\end{tabular}
		\label{SPG}
\end{table}