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HIFI | Heterodyne spectrometer |
Wavelength coverage | 157-212 & 240-625 ![]() |
Field-of-view (FOV) | single pixel on sky |
Detectors |
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Spectrometers | auto-correlator & acousto-optical |
Spectral resolving power | typically 106 |
PACS | 2-band imaging photometer |
Wavelength coverage | 60-85 or 85-130, 130-210 ![]() |
Field-of-view (FOV) | 0.5![]() ![]() |
Detectors |
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PACS | integral field spectrometer |
Wavelength coverage | 55-210 ![]() |
Field-of-view (FOV) | (
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Detectors | two
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Spectral resolving power | 1000-4000 |
SPIRE | 3-band imaging photometer |
Wavelength bands (![]() ![]() |
250, 350, 500 ![]() |
Field-of-view (FOV) | 2![]() ![]() ![]() |
Detectors | 139, 88 & 43 pixel NTD bol. arrays |
SPIRE | imaging fourier transf. spectrometer |
Wavelength coverage | 194-324 & 316-671 ![]() |
Field-of-view (FOV) | 2![]() ![]() |
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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