\begin{table}%t2
\caption{OM astrometric correction vectors in arcseconds.}\label{table:astrometry}      
\par
%\centerline
{\begin{tabular}{c r r l} 
\hline\hline       
XEST &  \multicolumn{1}{c}{$\Delta X$} & \multicolumn{1}{c}{$\Delta Y$} & \multicolumn{1}{l}{rms}\\ 
\hline
01 & $ $3.086 & $-$2.462 & $0.90$\\
02 & $ $4.338 & $-$1.016 & $0.62$\\
03 & $ $3.320 & $-$0.970 & $0.52$\\
04 & $-$1.471 & $ $3.632 & $0.83$\\
05 & $-$3.561 & $ $4.579 & $0.52$\\
06 & $ $3.948 & $-$3.227 & $0.57$\\
07 & $-$3.240 & $ $4.412 & $0.99$\\
08 & $ $2.955 & $-$0.800 & $0.81$\\
09 & $-$2.728 & $ $5.588 & $0.62$\\
10 & $-$2.219 & $ $2.623 & $0.61$\\
11 & $ $3.847 & $-$0.137 & $0.61$\\
12 & $-$2.675 & $ $3.093 & $0.61$\\
13 & $ $2.143 & $-$1.162 & $0.86$\\
14 & $-$4.529 & $ $3.239 & $0.68$\\
15 & $-$3.891 & $ $5.163 & $0.71$\\
17 & $-$3.824 & $ $5.114 & $0.58$\\
18 & $ $2.893 & $-$1.391 & $0.92$\\
19 & $ $3.617 & $-$0.044 & $0.62$\\
20 & $ $6.201 & $-$5.232 & $0.48$\\
22 & $ $1.586 & $-$1.008 & $0.06$\\
23 & $ $0.368 & $ $1.105 & $0.00^a$\\
24 & $-$1.363 & $ $0.720 & $0.00^a$\\
25 & $-$3.065 & $ $4.090 & $1.63$\\
28 & $ $5.519 & $-$0.994 & $0.77$\\
\hline                    
\end{tabular}}
\smallskip
$^a$  Only V410 Tau detected in the OM.
\end{table}