\begin{table}%t2
%\centering
\par
\caption{$J$-band observations with ISAAC at the VLT/UT1.}
\label{tbl-1}
\begin{tabular}{lccccc}
	\hline\hline
	\noalign{\smallskip}
	${\rm Object}$ & ${\rm Observation\ date} $  
	& ${\rm Observation\ time}$   &$ {\rm Detector\ integration\ time}$ &
	${\rm Number\ of\ exposures} $ & ${\rm Air\ mass}$ \\
	\noalign{\smallskip}
	\hline
	\noalign{\smallskip}
	${\rm I\ Zw\ 1}$ & 2001-08-19 & 08:05:06$-$08:13:17 
	&$ 6.00\ {\rm s}$ & 4 & 1.26 \\
	${\rm Standard\ star}$ & 2001-08-19 & 06:14:20$-$06:16:57 
	& $3.55\ {\rm s}$ & 5 & 1.33$-$1.34\\
	\noalign{\smallskip}
	\hline
	\multicolumn{6}{l}{Characteristics of the ISAAC $J$-band filter: central wavelength $1.25\ \mu{\rm m} $, width $0.29\ \mu{\rm m} $.}
\end{tabular}
\end{table}