\begin{table}%t2
%\centering
\par
\caption{Observing parameters.\label{table2}}
\small{
\begin{tabular}{lll}
\hline\hline
\multicolumn{1}{c}{}
& \multicolumn{1}{l}{Run 1}
& \multicolumn{1}{l}{Run 2}
 \\
% & &  \\
\hline
% & & \\
Date of Observations & March 98 & September 98 \\
Observer  & Zeilinger W.& Zeilinger W. \\
Spectrograph & B \& C grating \#25& B \& C grating \#25 \\
Detector & Loral 2K UV flooded & Loral 2K UV flooded \\
Pixel size ($\mu$m) & 15  & 15 \\
Scale along the slit (\arcsec/px$^{-1}$) & 0.82  & 0.82  \\
Slit length (\arcmin) & 4.5 & 4.5 \\
Slit width (\arcsec) & 2 & 2 \\
Dispersion (\AA\ mm$^{-1}$) & 187 & 187 \\
Spectral Resolution ({\it FWHM} at 5200 \AA) (\AA ) & 7.6 & 7.6  \\
Spectral Range (\AA ) & 3550--9100 & 3550--9100 \\
Seeing Range ({\it FWHM}) (\arcsec) & 1.2--2 & 1.0--2.0 \\
Standard stars & Feige 56 & ltt 1788, ltt 377 \\
% & & \\
\hline
\end{tabular}}
\end{table}