\begin{table}%t2

\caption{\label{tab:instr}Imaging instruments. Spatial resolution is given in arcseconds per pixel, temporal cadence in minutes. Note that the Hida and NoRH data are available at much higher cadences, and that the cadence for SXT applies to each specific combination of filters and exposure times.}         
%\centering
\par
\begin{tabular}{lccccc}
	\hline
	\hline
            \noalign{\smallskip}
{Instrument/} & {Wavelength} & {Spatial} & {Temporal}& {Reference}& {Events}\\
{Observatory} & {} & {resolution} & {cadence} & {}& {}\\
	\noalign{\smallskip}
            \hline
            \noalign{\smallskip}
DHC/KSO & H$\alpha$ & 2.3 & $\approx$1 &Messerotti et~al. (\cite{Messerotti1999})&E3, 5, 10\\
Singer/BBSO & H$\alpha$ & 1.1 & 0.5--1 & Denker et~al. (\cite{Denker1999})&E7--9, 12\\
FMT/Hida & H$\alpha$, H$\alpha\pm0.8$ \AA & 4.2 & 1 & Kurokawa et~al. (\cite{Kurokawa1995})&E2, 4, 6, 11\\
CHIP/MLSO & He~{\scriptsize I} 10~830 \AA  & 2.3 & 3 &MacQueen et~al. (\cite{MacQueen1998})&E8, 9, 12\\
EIT/\emph{SOHO} & Fe~{XII} 195 \AA & 2.6 & $\approx$15 &Delaboudini\`  ere et~al. (\cite{Delaboudini1995})&E1--5, 10--12\\
SXT/\emph{Yohkoh} & 3--45 \AA & 4.9/9.8 & 0.5--2 &Tsuneta et~al. (\cite{Tsuneta1991})&E2--4, 11\\
NoRH/Nobeyama & 17 GHz &10 & 0.5 & Nakajima et~al. (\cite{Nakajima1994})&E1, 2, 6, 8\\
\hline
\end{tabular}
\end{table}