\begin{table}%t2
\caption{Details of the observations.\label{tab2}}
\small
%\centerline
{        \begin{tabular}{lrllll}
        \noalign{\smallskip}
        \hline
	\hline
        \noalign{\smallskip}
 Star & Telescope & Band and  exposure & {\it V/B} Image$^a$ &  Surface Brightness     & Notes\\
      &           &     (min)                   & &  ($V$-mag arcsec$^{-2}$ ) &\\                    \noalign{\smallskip}
\hline
\noalign{\smallskip}
\noalign{\smallskip}
\object{IRC+10011} &  VLT~ 8.00 m & $U$ (4), $B$ (2), $V$ (2)      &
      st + env   & 25.7 (at  5\arcsec)      &  1 \\
\object{YY Tri}    & OHP 1.20 m    & $B$ (240), $V$ (120) & $\ldots$.  & $<$25.1      &  \\
\object{IK Tau}    & OHP 1.20 m    & $U$ (90), $B$(150)           & st  & $<$24.9 (at 10\arcsec)  &  2  \\ 
\object{IRC+70066} & OHP 1.20 m    & $U$ (480), $B$ (420), $V$ (330)& st  & $<$25.8 (at 10\arcsec)  &  \\
\object{AFGL 5254} & VLT~ 8.00 m  & $U$ (4), $B$ (2), $V$ (2)      & st  & $<$25.4 (at 5\arcsec)   &  \\
\object{CIT 6}     & OHP 1.20 m    & $U$ (102), $B$ (120)         & st  & $<$24.9 (at 10\arcsec)  &  2 \\
\object{AFGL 2155} &  OHP 1.20 m   & $V$ (300)          & env & 25.3          &  \\
\object{OH~348.2$-$19.7} &  VLT~ 8.00 m & $U$ (8), $B$ (2), $V$ (2)      &
      env  & 24.9
      (at 5 \arcsec)      &  1, 3 \\
\object{AFGL 2514} &  ESO~ 1.54 m & $V$ (120)                 & env  & 23.6
         &  1 \\ 
\object{AFGL 3068} &  OHP 1.20 m   & $B$ (60), $V$ (60)          & env & 23.9
             & 1 \\
\object{AFGL 3099} &  OHP 1.20 m   & $V$ (240)                 & env & 26.0
         &  \\
\object{AFGL 3116} &  OHP 1.20 m   & $B$ (150), $V$ (60)         & st + env
      & 25.8 &  2, 4 \\
\hline
\end{tabular}}
\par
\smallskip
{\small $^a$ Detections in the $V$ and $B$ images: st~=~star,
  env~=~envelope. The star YY~Tri is seen only in the $I$-band. \\ 
Notes: (1) See Table~\ref{tab3} for HST data. (2) Surface brightness
  from $B$~image, assuming $B-V = 0.5$.
(3) Star near center is field star. (4) Envelope seen only in $B$ image.}
\end{table}