\begin{table}%t2
%\centering
\par
\caption{\label{tab:instr} Science instrument main characteristics.}
\par
 \begin{tabular}{lr}
	 \hline\hline \noalign{\smallskip}
	HIFI &  Heterodyne spectrometer  \\
	\hline
	Wavelength coverage & 157$-$212 \& 240$-$625~$\mu$m \\
	Field-of-view (FOV) & single pixel on sky \\
	Detectors & $5 \times 2$ SIS \& $2 \times 2$ HEB mixers \\
	Spectrometers & auto-correlator \& acousto-optical \\
	Spectral resolving power &  typically 10$^6$ \\
	\hline 
	PACS & 2-band imaging photometer  \\
	\hline
	Wavelength coverage & 60$-$85 or 85$-$130, 130$-$210~$\mu$m \\
	Field-of-view (FOV) & 0.5$F\lambda$ sampled $1.75\arcmin \times 3.5\arcmin$ \\
	Detectors & $64 \times 32$ \& $32 \times 16$ pixel bol. arrays  \\
	\hline
	PACS &  integral field spectrometer \\
	\hline
	Wavelength coverage & 55--210~$\mu$m \\
	Field-of-view (FOV) & ($5 \times 5$ pixel) $47\arcsec \times 47\arcsec$ \\
	Detectors & two $25  \times 16$ pixel Ge:Ga arrays \\
	Spectral resolving power  &  1000$-$4000  \\
	\hline
	SPIRE & 3-band imaging photometer  \\
	\hline
	Wavelength bands ($\lambda$/$\Delta\lambda\sim 3$) & 250, 350, 500~$\mu$m \\
	Field-of-view (FOV) & 2$F\lambda$ sampled 4\arcmin x8\arcmin \\
	Detectors & 139, 88 \& 43 pixel NTD bol. arrays  \\
	\hline
	SPIRE &  imaging fourier transf. spectrometer  \\
	\hline
	Wavelength coverage & 194$-$324 \& 316$-$671~$\mu$m \\
	Field-of-view (FOV) & 2$F\lambda$ sampled circular 2.6\arcmin \\
	Detectors & 37 \& 19 pixel NTD bol. arrays  \\
	Spectral resolving power  &  370$-$1300 (high) / 20$-$60 (low)  \\
	\hline
	\end{tabular}
\tablefoot{Acronyms relating to the detectors: superconductor-insulator-superconductor (SIS), hot electron bolometer (HEB), gallium-doped germanium (Ge:Ga), and neutron transmutation doped (NTD).}
\end{table}