\begin{table}%t2
\caption{\label{table2}Photometric measurements.}
%\centerline
 {\small \begin{tabular}{ccccrrrc}
\hline\hline
Band & $\lambda_{\rm{central}}$ & Date & Instrument & \multicolumn{1}{c}{T~Tau N} & \multicolumn{1}{c}{T~Tau Sa} & \multicolumn{1}{c}{T~Tau Sb} & Reference\\
& [$\mu$m] & & & & & & \\
\hline
$U$  &  0.36 & 21--10--2004 & Phot. / Mt. Maidanak& $11.74\pm0.04$~mag &-- &-- & $^a$\\
$B$  &  0.43 & Oct. 2004  & KING / MPIA  & $11.2\pm0.1$~mag &-- &-- & $^b$\\
$V$  &  0.55 & Oct. 2004  & KING / MPIA &$9.9\pm0.1$~mag &-- &--&$^b$\\
$R$ &0.70 & Oct. 2004  & KING / MPIA & $ 8.9\pm0.1$~mag &--&-- & $^b$\\
$I$ &  0.90 & Oct. 2004  & KING / MPIA &$ 8.3\pm0.1$~mag &--&-- & $^b$\\
$J$ &  1.25 & 14--12--2002 & NACO / VLT& $7.1\pm0.1$~mag & $>$14.5~mag  & $12.9\pm0.1$~mag & $^c$\\
$H$ &  1.65 & 14--12--2002 & NACO / VLT&  $6.2\pm0.1$~mag &$12.3\pm0.1$~mag  & $10.4\pm0.1$~mag & $^c$\\
$K$s  &  2.16 & 14--12--2002 & NACO / VLT &  $5.7\pm0.1$~mag& $9.2\pm0.1$~mag & $ 8.8\pm0.1$~mag & $^c$\\
$L$'  &  3.80 & 13--12--2002 & NIRC-2 / Keck&  $4.32\pm0.05$~mag & $5.64\pm0.03$~mag & $ 6.25\pm0.03$~mag & $^{d,e}$\\
$M$s  &  4.67 & 13--12--2002 & NIRC-2 / Keck& $4.13\pm0.10$~mag & $ 4.96\pm0.06$~mag & $ 5.77\pm0.06$~mag & $^{d,f}$\\
&  8.5 & Oct./Nov. 2004 & MIDI/VLTI & $5.6\pm0.2$~Jy & $2.6\pm0.2$~Jy & $1.0\pm0.1$~Jy & $^b$\\
& 9.0 & Oct./Nov. 2004 & MIDI/VLT& $6.7\pm0.3$~Jy & $1.5\pm0.2$~Jy & $0.6\pm0.1$~Jy & $^b$\\
&  9.5 & Oct./Nov. 2004 & MIDI/VLTI & $7.4\pm0.5$~Jy & $1.0\pm0.2$~Jy & $0.4\pm0.1$~Jy & $^b$\\
& 10.0 & Oct./Nov. 2004 & MIDI/VLTI	 & $8.4\pm0.4$~Jy & $1.1\pm0.2$~Jy & $0.5\pm0.1$~Jy & $^b$\\
& 10.5 & Oct./Nov. 2004 & MIDI/VLTI	 & $8.8\pm0.4$~Jy & $1.6\pm0.3$~Jy & $0.7\pm0.2$~Jy & $^b$\\
& 11.0 & Oct./Nov. 2004 & MIDI/VLTI	 & $8.8\pm0.4$~Jy & $2.3\pm0.3$~Jy & $0.9\pm0.2$~Jy & $^b$\\
& 11.5 & Oct./Nov. 2004 & MIDI/VLTI	 & $8.7\pm0.4$~Jy & $3.2\pm0.4$~Jy & $1.1\pm0.2$~Jy & $^b$\\
& 12.0 & Oct./Nov. 2004 & MIDI/VLTI	 & $8.4\pm0.5$~Jy & $4.4\pm0.5$~Jy & $1.3\pm0.2$~Jy & $^b$\\
& 12.5 & Oct./Nov. 2004 & MIDI/VLTI	 & $7.8\pm0.5$~Jy & $5.3\pm0.6$~Jy & $1.3\pm0.3$~Jy & $^b$\\
%\hline
$Q$  & 19.91 & 27--08--1996 & MAX / UKIRT         &  \multicolumn{1}{r}{$20\pm 5$~Jy} &\multicolumn{2}{r}{------------------ \ \ $28\pm7$~Jy\ \ -----------} & $^g$\\
&25 & 25--09--1997 & ISOPHOT &\multicolumn{3}{r}{-----------------------$\ \ \ \ 40.88\pm \ \ 6.13$~Jy\ \  ---------------------} & $^b$\\
&    60 & 25--09--1997 & ISOPHOT             &  \multicolumn{3}{r}{-----------------------$\ \    117.77\pm	 17.67$~Jy\ \  ---------------------} & $^b$\\
&   100 & 25--09--1997 & ISOPHOT             &  \multicolumn{3}{r}{-----------------------$\ \    105.55\pm	 15.83$~Jy\ \  ---------------------} & $^b$\\
&   150 & 25--09--1997 & ISOPHOT             &  \multicolumn{3}{r}{-----------------------$\ \    113.39\pm	 17.01$~Jy\ \  ---------------------} & $^b$\\
&   170 & 25--09--1997 & ISOPHOT             &  \multicolumn{3}{r}{-----------------------$\ \ \ \ 82.79\pm	 12.42$~Jy\ \  ---------------------} & $^b$\\
&   350 &  2004--2005 & CSO                 & \multicolumn{3}{r}{-----------------------$\ \ \ \ 8.149\pm0.253$~Jy ----------------------} & $^h$\\
&   450 &  1997--2002 & SCUBA / JCMT        & \multicolumn{3}{r}{-----------------------$\ \ \ \ 1.655\pm0.218$~Jy ----------------------} & $^h$\\
&   840 & 28--10--1994 & JCMT \& CSO         & \multicolumn{3}{r}{-----------------------$\ \ \ \ 1.350\pm0.675$~Jy ----------------------} & $^i$\\
&   850 &  1997--2002 & SCUBA / JCMT        & \multicolumn{3}{r}{-----------------------$\ \ \ \ 0.628\pm0.017$~Jy ----------------------} & $^h$\\
&  1100 & 01--12--1994 & OVRO                & $0.397\pm0.035$~Jy & \multicolumn{2}{r}{----------------- \ \ $<$0.100~Jy\ \ ----------}   & $^i$\\
&  1300 & April 1988 & IRAM                & \multicolumn{3}{r}{-----------------------$\ \ \ \ 0.280\pm0.009$~Jy ----------------------} & $^h$\\
&  2800 &  1996--1997 & BIMA                & $0.050\pm0.006$~Jy & \multicolumn{2}{r}{----------------- \ \ $<$0.009~Jy----------}   & $^j$\\
\hline
\end{tabular}}
\medskip
$^a$ Melnikov, S. (private communication); $^b$ this work; $^c$~\cite{herbst07}; $^d$~\cite{duchene05}: flux ratios; $^e$~\cite{beck04}: flux of T~Tau~N; $^f$~\cite{ghez91}: flux of T~Tau~N; $^g$~\cite{herbst97}; $^h$~\cite{andrews05} and references therein; $^i$~\cite{hogerheijde97}; $^j$ \cite{akeson98}.
\end{table}