\begin{table}%T1
\par
\caption{\label{solaratlases}Ultraviolet~spectral atlases of the \object{Sun} and \object{$\alpha$~Cen~A}.}
%\centerline
{
\begin{tabular}{lccccc}
\hline
\hline
Instrument & Spectral    & Spectral   & Solar    & Flux        & Reference \\
Used       & Range (\AA) & Resolution & Location & Calibration &           \\
\hline
HRTS       & 1190--1730  & 0.05~\AA        & quiet \object{Sun}   & $\pm$$30$\%   & (1) \\
           &             &                & active \object{Sun}  &              & (1) \\
UVSP/SMM   & 1150--3600  &$\sim$$100~000$  & disk center &              & (2) \\
SOHO/SUMER & 465--1610   & 17~770--38~300 & disk center & $\pm$20\%    & (3) \\
           &             &                & sunspot, CH & $\pm$20\%    & (3) \\
SOHO/CDS   & 150--800    & 0.3--0.6~\AA    & slit on disk& not given    & (4) \\
           & 307--632    & 0.3--0.6~\AA    & \object{Sun}-as-a-star& 15--45\%    & (5) \\
SOLSTICE/UARS & 1190--4200 & 1--2~\AA     & \object{Sun}-as-a-star & $\pm$5\%   & (6) \\
rocket EGS & 300--1100   & 2~\AA           & \object{Sun}-as-a-star & $\pm$15\%  & (7) \\
STIS E140H & 1140--1670  & 114~000        & \object{$\alpha$~Cen~A}      & $\pm$$5$\%    &
(8) \\
 \hline
 \end{tabular}}
 \smallskip
  (1) \citet{brekke93b},  (2) \citet{uvsp}, \citet{woodgate80},  (3) \citet{curdt}, \\
 (4) {\tt http://solg2.bnsc.rl.ac.uk/atlas/atlas.shtml},   (5) \citet{brekke00},  (6) \citet{rottman93}, \\
 (7) EUV~Grating Spectrograph, \citet{woods90},   (8) \citet{stismanual}, \citet{bohlin01}.
\end{table}