\begin{table}%t1
\caption{Limb darkening corrections $k = \theta_{\rm LD} / \theta_{\rm UD}$ derived from the\protect
linear limb darkening coefficients determined by Claret (\cite{claret00}). 
The $k_R$~coefficients were used for the GI2T~measurements, $k_{R/I}$ for\protect the NPOI, $k_H$ 
for the~PTI, and~$k_K$ for VINCI/VLTI and FLUOR/IOTA}
\label{cepheid_LD_coefs}
%\centering
\par
\begin{tabular}{lcccc}
\hline  \hline
Star & $k_R$ & $k_{R/I}$ & $k_H$ & $k_K$ \\
\hline
$\alpha$~UMi & & 1.046 & & \\
$\delta$~Cep & 1.051 & 1.046 & & \\X Sgr & & & & 1.020 \\$\eta$~Aql & & 1.048 & 1.024 & 1.021 \\W Sgr & & & & 1.021 \\$\beta$~Dor & & & & 1.023 \\$\zeta$~Gem & & 1.051 & 1.027 & 1.023 \\
Y Oph & & & & 1.024 \\$\ell$~Car & & & & 1.026 \\
\hline
\end{tabular}
\end{table}