\begin{table}%t1 \caption{Observational circumstances.} \label{tab:cir} %%\centerline {\begin{tabular}{lclcccl} \hline\hline Instrument & Range (\mm)& Date & Exposure (s) & Airmass & Seeing & Analog Star (Airmass) \\ \hline FORS2$^a$ & 0.554 & 12 Apr. 2008 & 10 & 1.25 & 0.8 & -- \\ FORS2$^a$ & 0.657 & 12 Apr. 2008 & 10 & 1.24 & 0.8 & -- \\ FORS2$^a$ & 0.768 & 12 Apr. 2008 & 20 & 1.24 & 0.8 & -- \\ FORS2$^b$ &0.4--0.9 & 12 Apr. 2008 & 1200 & 1.22 & 0.8 & SA102-1081 (1.10) \\ ISAAC$^b$ &1.15--1.35& 24 Jan. 2007 & 180 & 1.22 & 0.6 & SA102-1081 (1.14) \\ SINFONI$^b$ &1.78--2.35& 12 Apr. 2008 & 7800 & 1.23 & 0.8 & SA102-1081 (1.23) \\ \hline \end{tabular}} \par \tablefoot{\tablefoottext{a}{Photometry}. \tablefoottext{b}{Spectroscopy}.} \end{table}