Planck-LFILow Frequency Instrument

Mapping the first light in the Universe

Marco Bersanelli, University of MilanoDarmstadt19 March 2009

Planck-LFI: Wavelength range

30 GHz44 GHz 70 GHz

30, 44 GHz: Monitor Galacic emission at low frequency70 GHz: Cleanest window for CMB

30 GHz30 GHz 44 GHz44 GHz70 GHz70 GHz

Document title | Author Name | Place | Data doc | Programme | Pag. 3

Planck-LFI: Differential Radiometers

– Sensitivity (ΔT/T ∼ 3 × 10-6/pix)

– Stability (fK ∼ 10-2 Hz)

Sky signal

Ref signal

Difference

20K

300K

4K

Unprecedented performances:

THANK YOU

Name SurnameAuthor Titlename.surname@esa.int

(animation, 27MB)

Qualification Model (QM)Qualification Model (QM)

Unit Assembly Instrument Satellite In-flight

Flight Model (FM)Flight Model (FM)

CompletedCompleted CompletedCompleted CompletedCompleted

CompletedCompleted ReadyReady

Supported by Data Processing Center

LFI

CompletedCompleted CompletedCompleted

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CompletedCompleted

HFI

CSL Campaign

Planck-LFI: Instrument Calibration