the picard mission
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The PICARD Mission. Gérard Thuillier, Service d’Aéronomie du CNRS Jean-Yves Prado, CNES. PICARD MISSION MAIN SCIENTIFIC OBJECTIVES - PowerPoint PPT PresentationTRANSCRIPT
The PICARD Mission
Gérard Thuillier, Service d’Aéronomie du CNRS
Jean-Yves Prado, CNES
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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 machineRole of the magnetic field, on surface or deeper in the convective zone.
(3) Contribution to solar luminosity reconstruction
(4) Long term trend
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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
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SOVAP (IRM)
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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“)
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SODISM (SA/CNRS)
• Images of the Sunby a 2kx2k CCD• 5 channels
-3 for diameter-2 for activity
•Reference stars images
• Thermal behaviour critical
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PICARD - SOL
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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
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PI teams
SA (F)IRMB (B)PMOD (Ch)
Co’Is
OCANice UniversityIASLMD
Yale universityHAO, GSFCJPL, NRL
Barcelona U
ILWSAll data available
2 years after the mission end,at the latest
DATA POLICY
Guest Investigators
AO to be released after launch
Space weather productsimmediately available
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THE PICARD SPACECRAFT
PREMOS2
SOVAP
SODISM