\begin{table}%t1 \caption{\label{obs_table}The summary of the observation details on the RV std, TW Hya, and Gl 86, with all NDIT set to 1.} %\centering \par \begin{tabular}{lcccccc} \hline\hline\noalign{\smallskip} Object & DIT [s] & $\#$ of Nodding pairs & Reference Wavelength [nm] & Slit width [$''$] & Set-up comments \\ \hline RV std & 45 & 2 & 1592.7 & 0.2 & No AO \& No Gas-Cell \\ TW Hya & 180 & 2 & 1592.7 & 0.2 & No AO \& No Gas-Cell \\ Gl 86 & 30 & 3 & 1588.4 & 0.3 & No AO \& No Gas-Cell \\ \hline \end{tabular} \end{table}