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OATS-DAUT SEMINAR
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Speaker: Marco Frailis (INAF/OATS)

Title: The Planck LFI telemetry handling system: software, interfaces and procedures for launch preparation
Date: Wednesday, April 30th, 2008
Time: 12:00
Venue: Villa Bazzoni
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Abstract:
Planck is a mission of the European Space Agency designed to map the microwave sky with an unprecedented combination of sky coverage, frequency range, calibration accuracy, independence from systematic errors, stability and sensitivity. The Planck satellite-based telescope feeds microwave radiation to two instruments: LFI (Low frequency Instrument), a radio receiver array covering the frequency range 27-77 GHz and operated at 20 K, and HFI (High Frequency Instrument), a bolometer array covering the frequency range 83 GHz - 1 THz and operated at 0.1 K. Planck is currently planned to be launched on an Arianne-5 on end of 2008; after the launch, it will be injected into a Lissajous orbit around the L2 point at a distance of around 1.5 million km from Earth. The LFI Data Processing Centre (DPC) is responsible for the in-flight operations, the data reduction and scientific processing of LFI in order to extract the maximum amount of scientific information and provide the data quality necessary to achieve the objectives of the Planck mission. This presentation will focus on the Level 1 of the LFI DPC, which includes all softwares and procedures necessary to daily retrieve the telemetry data from the ESA Mission Operation Centre (MOC) and produce scientific Time Ordered Information (TOIs) which will then be used by the subsequent levels of the DPC in order to produce sky maps in different spectral bands. After an introduction to the LFI instrument, the presentation will describe the architecture of the Level 1, its main tasks, the interfaces to the MOC, and the testing procedures performed according to the ESA software engineering standards.
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contact: Marco Frailis (OATS)