\begin{table}%tA.1
\caption{\label{TabTelDef}\textit{Planck} telescope parameters.}  
\par
%\centering
\par
\begin{tabular}{lcc}
\hline \hline \noalign{\smallskip}
Parameter\tablefootmark{a}  & Design value & Nominal in-flight value  \\
\hline
Angle between $Z_{\rm M1}$ and $Z_{\rm M2}$ axis (deg) & 10.1 & 10.0497 \\
Distance between ${\rm O}_{\rm M1}$ and I (mm) & 481.737 & 480.207 \\
Distance between I and ${\rm O}_{\rm M2}$ (mm) & 706.027 & 707.631 \\
Decentre of focal plane with respect to $X_{\rm M2}$ (mm) & --108.42 &
--108.889 \\
Decentre of focal plane with respect to $Z_{\rm M2}$ (mm) & --1026.83 &
--1024.184 \\
Angle of focal plane ($X_{\rm RDP}$) with respect to normal (deg) &
--21.27 & --21.358 \\
  \hline
\end{tabular}
\tablefoot {\tablefoottext{a}{See also Fig.~\ref{FigRelCoordSystem}.}}
\end{table}