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The PICARD Mission

The PICARD Mission. Gérard Thuillier, Service d’Aéronomie du CNRS Jean-Yves Prado, CNES. PICARD MISSION MAIN SCIENTIFIC OBJECTIVES

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The PICARD Mission

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  1. The PICARD Mission Gérard Thuillier, Service d’Aéronomie du CNRS Jean-Yves Prado, CNES

  2. PICARD MISSION MAIN SCIENTIFIC OBJECTIVES • (1) Determine the variability of several global solar properties. In particular, wether the solar diameter varies or not with solar activity by a non ambiguous measurement. • (2) Modelling of the solar machine • Role of the magnetic field, on surface or deeper in the convective zone. • (3) Contribution to solar luminosity reconstruction • (4) Long term trend ESWW#4 Brussels 5-9 November, 2007

  3. PICARD SCIENTIFIC PRODUCTS in orbit: - Diameter, limb shape and asphericity in the continuum - TSI (x2) - 5 spectral channels (215,393, 535, 607, 782 nm) - Activity (images at 215 nm and Ca II)=> space weather - Solar oscillations from the ground : - diameter, limb shape and asphericity, - local atmosphere turbulence ESWW#4 Brussels 5-9 November, 2007

  4. SOVAP (IRM) ESWW#4 Brussels 5-9 November, 2007

  5. PREMOS 2 (PMOD) •2 absolute radiometers •3 filter radiometers Spectral solar irradiance at 215, 268, 535 and 782 nm Total Irradiance with 2 Radiometers PMO6-V (type „SOHO/VIRGO“) ESWW#4 Brussels 5-9 November, 2007

  6. SODISM (SA/CNRS) • Images of the Sun • by a 2kx2k CCD • 5 channels • 3 for diameter • 2 for activity • Reference stars images • Thermal behaviour critical ESWW#4 Brussels 5-9 November, 2007

  7. PICARD - SOL ESWW#4 Brussels 5-9 November, 2007

  8. PICARD MISSION MAIN FEATURES • Sun synchronous orbit 6h/18h altitude 710 km • No propulsion • Launch by a DNEPR, autumn 2008 • S- Band telemetry • ~2 Gbit/day • Science Operation Center inBelgium • Minimum mission duration 2 years • Possible extension to 3 years • Deorbitation <60 years • Authorization to proceed into phases C/D expected soon ESWW#4 Brussels 5-9 November, 2007

  9. DATA POLICY Co’Is OCA Nice University IAS LMD Yale university HAO, GSFC JPL, NRL Barcelona U PI teams SA (F) IRMB (B) PMOD (Ch) Guest Investigators AO to be released after launch Space weather products immediately available ILWS All data available 2 years after the mission end, at the latest ESWW#4 Brussels 5-9 November, 2007

  10. THE PICARD SPACECRAFT SOVAP PREMOS2 SODISM ESWW#4 Brussels 5-9 November, 2007

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