Sep 21 – 23, 2015
Royal Observatory of Belgium
Europe/Brussels timezone

The SOLSPEC Spectrometers onboard the International Space Station

Sep 23, 2015, 11:45 AM
Meridian Room (Royal Observatory of Belgium)

Meridian Room

Royal Observatory of Belgium

Avenue Circulaire - 3 - Ringlaan 1180 Brussels
5-Future solar missions and degradation in space of solar instruments


Dr Gerard Thuillier (LATMOS-CNRS)


The SOLSPEC spectrometer placed onboard the SOLAR payload of the International Space Station (ISS) measures the solar spectral irradiance (SSI) from 170 to 2900 nm. Data at first light in April 2008 appears consistent with the WHI spectrum as well as ATLAS 3. However, a degradation appeared especially in UV in relation with the deuterium lamps operations. When they were no more activated, the degradation significantly decreased. Another anomaly is shown in the raw data consisting in signal change at constant wavelength. We report the study of these two anomalies in view of possible corrections. We also show that despite a strong degradation and non-solar signatures in the data, SOLSPEC can clearly detect the variability of the solar irradiance on the timescale of the solar rotation.

Primary author

Dr Gerard Thuillier (LATMOS-CNRS)


Dr Alexander Shapiro (Max-Planck-Institut für Sonnensystemforschung) Mr Timofei Sukhodolov (Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center, 7260 Davos Dorf, Switzerland) Prof. Werner Schmutz (Physikalisch-Meteorologisches Observatorium Davos, World Radiation Center, 7260 Davos Dorf, Switzerland)

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