Publications (6)
Dark signal correction for a lukecold frame transfer CCD. Application to the SODISM solar telescope on board the PICARD space mission
J. -F. Hochedez, C. Timmermans, A. Hauchecorne +1
When Charge Coupled Devices are used for scientific observations, their dark signal is a hindrance. In their pristine state, most CCD pixels are `cool'; they exhibit low, quasi uni…
Helioseismology with PICARD
T. Corbard, D. Salabert, P. Boumier +10
PICARD is a CNES micro-satellite launched in June 2010 (Thuillier at al. 2006). Its main goal is to measure the solar shape, total and spectral irradiance during the ascending phas…
On the importance of astronomical refraction for modern Solar astrometric measurements
T. Corbard, R. Ikhlef, F. Morand +2
In this work we study in details the influence of pure astronomical refraction on solar metrologic measurements made from ground-based full disk imagery and provide the tools for c…
On-Orbit Degradation of Solar Instruments
A. BenMoussa, S. Gissot, U. Schühle +38
We present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space…
Investigation of faint galactic carbon stars from the first Byurakan spectral survey. III. Infrared characteristics
K. S. Gigoyan, A. Sarkissian, C. Rossi +5
Infra-Red(IR) astronomical databases, namely, IRAS, 2MASS, WISE, and Spitzer, are used to analyze photometric data of 126 carbon stars whose spectra are visible in the First Byurak…
PICARD SODISM, a space telescope to study the Sun from the middle ultraviolet to the near infrared
M. Meftah, J. -F. Hochedez, A. Irbah +25
The Solar Diameter Imager and Surface Mapper (SODISM) on board the PICARD space mission provides wide-field images of the photosphere and chromosphere of the Sun in five narrow pas…