Table 2:

Science instrument main characteristics.

Heterodyne spectrometer
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 106
PACS 2-band imaging photometer
Wavelength coverage 60-85 or 85-130, 130-210 $\mu $m
Field-of-view (FOV) 0.5$F\lambda$ sampled $1.75\hbox{$^\prime$ }\times 3.5\hbox{$^\prime$ }$
Detectors $64 \times 32$ & $32 \times 16$ pixel bol. arrays
PACS integral field spectrometer
Wavelength coverage 55-210 $\mu $m
Field-of-view (FOV) ( $5 \times 5$ pixel) $47\hbox{$^{\prime\prime}$ }\times 47\hbox{$^{\prime\prime}$ }$
Detectors two $25 \times 16$ pixel Ge:Ga arrays
Spectral resolving power 1000-4000
SPIRE 3-band imaging photometer
Wavelength bands ($\lambda$/ $\Delta\lambda\sim 3$) 250, 350, 500 $\mu $m
Field-of-view (FOV) 2$F\lambda$ sampled 4$^\prime$x8$^\prime$
Detectors 139, 88 & 43 pixel NTD bol. arrays
SPIRE imaging fourier transf. spectrometer
Wavelength coverage 194-324 & 316-671 $\mu $m
Field-of-view (FOV) 2$F\lambda$ sampled circular 2.6$^\prime$
Detectors 37 & 19 pixel NTD bol. arrays
Spectral resolving power 370-1300 (high) / 20-60 (low)

Notes. Acronyms relating to the detectors: superconductor-insulator-superconductor (SIS), hot electron bolometer (HEB), gallium-doped germanium (Ge:Ga), and neutron transmutation doped (NTD).

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