Premium
Monitoring the scale factor of the PICARD SODISM instrument
Author(s) -
Assus P.,
Irbah A.,
Bourget P.,
Corbard T.
Publication year - 2008
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200710987
Subject(s) - calibration , orbit (dynamics) , scale (ratio) , scale factor (cosmology) , physics , remote sensing , telescope , astronomy , optics , aerospace engineering , geology , engineering , cosmology , quantum mechanics , metric expansion of space , dark energy
The SODISM Telescope of the PICARD Space mission will perform diameter measurements by directly imaging the Sun on a CCD camera. An internal calibration system allows us to follow scale factor variations induced by instrument deformations resulting from temperature fluctuations on orbit or from others causes. We present this calibration system in this paper as well as some simulations on how to correct observations. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)