\begin{table}%t1
\caption {Summary of observations. The rows designate the observation
date (UT), the time since the explosion of SN~1987A on 23 February 1987A, the
spaxel size of the observation, the wavelength range of the
spectrograph setting, the spectral resolution, the total exposure time
and the image quality as measured from the combined data cube on Star~2 and Star~3. We
further list the standard star used for the flux calibration, and the
uncertainty in the flux as determined from a comparison of Star~2 from
the corresponding black body curve, the uncertainty in the wavelength
calibration as measured from night sky lines and the corresponding
uncertainty in velocity.
\label{obsval}}
%\centering
\par
\begin{tabular}{l|ccc|c}
\hline\hline
& $J$ & $H$  & $K$ & J100\\
\hline
Date & 2004/11/28& 2004/11/29& 2004/11/29& 2004/11/28\\
Day  & 6488 & 6489  & 6489 & 6488 \\
Spatial Res. & 250mas &250mas &250mas & 100mas\\
Wavelength & 1.11--1.35 $\mu$m & 1.487--1.792 $\mu$m& 1.985--2.375 $\mu$m& 1.11--1.35 $\mu$m \\
$\lambda/\Delta\lambda$&  2000 & 2000 & 4500 &  2000\\
Exptime & 600s & 1200s & 1800s & 1200s\\
Image quality & 0.62$''$ & 0.46$''$ & 0.48$''$ & 0.32$''$ \\
\hline
Std. Star&HD~36531 &HD~29303 &HD~29303& HD~36531\\
$\epsilon_{\rm Flux}$ & 1 \% & 13 \%  & 4 \% & 4 \% \\
$\delta(\lambda)$ & $8 \times 10^{-5}$ $\mu$m &  $7 \times 10^{-5}$ $\mu$m &  $7.5 \times 10^{-5}$ $\mu$m &$8 \times 10^{-5}$ $\mu$m \\
$\delta(v)$ & 19 km~s$^{-1}$& 12 km~s$^{-1}$ & 11 km~s$^{-1}$&19 km~s$^{-1}$ \\
\hline
\end{tabular}
\end{table}