\begin{table}%ta.1
%\centering
\par
\caption{\label{table:observation_a}Overview of additional observations with NAOS-CONICA. Coordinates, $L$~band magnitude, $FWHM$, date, observing
time ({\@}$UT${\@}), and the mean airmass ({\@}$AM${\@}) during
the  observations are listed.}
\par
\begin{tabular}{lrrrrrccr} 
\hline\hline \noalign{\smallskip}
Object & $\alpha({\rm J2000})$ & $\delta({\rm J2000})$ & $L$ [mag] & $FWHM$ [''] & date & $UT$ & $AM$ & $T_{\rm tot}$\\
\hline
\object{HR~6070} & $16~18~18$ & ${-}28~36~46$ & 4.807 & -- & April
2nd, 2006 & $7:02{-}7:04$ & $1.0$ & 2.0~s\\ 
\object{Elia~2-23} (p) & $16~26~24$ & ${-}24~24~50$ & 5.9 & 2 & Apr.  2nd, 2006 & $7:45{-}9:34$ & 1.0 & $72 \times 6 \times 2.0$~s\\ 
HR~6070 & $16~18~18$ & ${-}28~36~46$ & $4.807$ & -- & April
2nd, 2006 & $7:02{-}7:04$ & $1.0$ & $2.0~{\rm s}$ \\ 
\object{Elia~2-21} & $16~26~24$ & ${-}24~24~50$ & $8.0$ & $1$ & April  2nd, 2006 & $7:45{-}9:34$ & $1.0$ & $72 \times 6 \times 2.0~{\rm s}$\\
 Elia~2{-}23 (o) & $16~26~24$ & ${-}24~24~50$ & 5.9 & 2 & June
22nd, 2006 & $0:00{-}0:30$ & 1.0 & $76 \times 6 \times 2.0~{\rm s}$ \\ 
HR~6070 & $16~18~18$ & ${-}28~36~46$ & $4.807$ & -- & June
22nd, 2006 & $0:45{-}0:47$ & 1.0 & $2.0~{\rm s}$\\ 
\object{GY92~244} (p) & $16~27~17$ & ${-}24~28~58$ & $8.8$ & 2 & May  27th, 2006& $2:48{-}4:00$ & 1.1 & $54 \times 18 \times 2.0~{\rm s}$ \\
HR~6070 & $16~18~18$ & ${-}28~36~46$ & 4.807 & -- & May
27th, 2006 & $4:24{-}4:26$ & 1.0 & $2.0~{\rm s}$\\ 
GY92~244 (o) & $16~27~17$ & ${-}24~28~58$ & $8.8$ & $2$ & May
27{th}, 2006  &$5:25{-}6:02$ & $1.0$ &   $36 \times 18 \times 2.0~{\rm s}$ \\
HR~6070 & $16~18~18$ & ${-}28~36~46$ & $4.807$ & -- & May
27th, 2006 & $6:22{-}6:24$ & $1.1$ & $2.0~{\rm s}$\\ 
\object{CRBR~2422.8-3423} (p) & $16~27~05$ & ${-}24~36~31$ & $9.7$ & 1 & August 12th, 2006 & $2:01{-}2:57$ & $1.3$ & 
$18 \times 40 \times 4.0~{\rm s}$ \\
HR~6070 & $16~18~18$ & ${-}28~36~46$ & $4.807$ & -- & Aug.
12th, 2006 & $3:15{-}3:17$ & 1.5 & 2.5~s\\ 
CRBR~2422.8-3423 (o) & $16~27~05$ & ${-}24~36~31$ & $9.7$ & $1$ &     August 19th, 2006 & $0:14{-}0:45$ & $1.0$ &  $12 \times 60 \times 3.0~{\rm s}$ \\
HR~6070 & $16~18~18$ & ${-}28~36~46$ & $4.807$ & -- & August
19th, 2006 & $1:11{-}1:13$ & $1.1$ & 
$2.5~{\rm s}$\\ 
\object{VV~CrA~A} (p) & $19~03~07$ & ${-}37~12~50$ & $3.7$ & $1$ & July 27th, 2006 & $5:23{-}6:01$ & $1.2$ &   $60 \times 8 \times 1.5~{\rm s}$ + \\
& & & & & & & & $+ 16 \times 5 \times 5.0~{\rm s}$ \\
\object{BS~7330} & $19~21~29$ & ${-}34~58~57$ & 4.9 & -- & July       27th, 2006 & $6:28{-}6:30$ & $1.3$ &$2.0~{\rm s}$ \\ 
VV~CrA~A (o) & $19~03~07$ & $-37~12~50$ & 3.7 & $1$ & July 4{th}, 2006 & $5:17{-}6:03$ & $1.0$ &  
$60 \times 12 \times 1.0~{\rm s}$ \\
BS~7330 & $19~21~29$ & ${-}34~58~57$ & $4.9$ & -- & July 4th,
          2006 & $6:20{-}6:22$ & $1.1$ & $2.0~{\rm s}$\bigskip\\ 
          \object{VV~CrA~B} & $19~03~07$ & $-37~12~50$ & $6.2$ & $1$ & July
          27th, 2006 & $5:23{-}6:01$ & 1.2 & $60 \times 8 \times 1.5~{\rm s} + $ \\
          & & & & & & & & $+ 16 \times 5 \times 5.0~{\rm s}$ \\
          BS~7330 & $19~21~29$ & ${-}34~58~57$ & $4.9$ & -- & July
          $27^{th}, 2006$ & $6:28 - 6:30$ & $1.3$ &$2.0~{\rm s}$ \\ 
          \hline
        \end{tabular}
  \end{table}