\begin{table}%t3
\caption{Optical spectroscopy observations.}\label{spectra}
%\centering
\par
\begin{tabular}{llllccc}
\hline
\hline
Run & Telescope    & Instrument & CCD & Grism & Pixel size & Wavelength range    \\
    &              &            &     &       & (nm)       & (nm)                \\
\hline
S1  & ESO 3.6 m     & EFOSC~1   & \#08 & B~300  & 0.48       & 350--700          \\
S2  & ESO 3.6 m     & EFOSC~1   & \#08 & R~300  & 0.52       & 500--900          \\
S3  & ESO 3.6 m     & EFOSC~1   & \#08 & B~1000 & 1.3        & 350--1050         \\ 
S4  & ESO 3.6 m     & EFOSC~1   & \#26 & B~300  & 0.96       & 350--700          \\ 
S5  & ESO 3.6 m     & EFOSC~1   & \#26 & R~300  & 1.04       & 500--900          \\ 
S6  & NTT 3.5 m     & EMMI       & \#18 & \#2     & 0.44       & 400--700          \\ 
S7  & ESO/MPI 2.2 m & EFOSC~2   & \#19 & \#1     & 1.0        & 400--920          \\ 
\hline
\end{tabular}
\end{table}