{"id":1770,"date":"2020-01-21T10:45:39","date_gmt":"2020-01-21T09:45:39","guid":{"rendered":"https:\/\/www-new.ias.u-psud.fr\/?p=1770"},"modified":"2026-08-07T12:03:14","modified_gmt":"2026-08-07T10:03:14","slug":"euclid-la-collaboration-francaise-se-reunit-a-orsay-3-ans-avant-le-lancement","status":"publish","type":"post","link":"https:\/\/www.ias.u-psud.fr\/index.php\/2020\/01\/21\/euclid-la-collaboration-francaise-se-reunit-a-orsay-3-ans-avant-le-lancement\/","title":{"rendered":"Euclid : la collaboration fran\u00e7aise se r\u00e9unit \u00e0 Orsay, 3 ans avant le lancement"},"content":{"rendered":"\t\t
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Euclid : la collaboration fran\u00e7aise se r\u00e9unit \u00e0 Orsay, 3 ans avant le lancement<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Euclid est une mission spatiale de l\u2019Agence Spatiale Europ\u00e9enne (ESA) dont le d\u00e9collage est pr\u00e9vu pour 2022. Cette mission de cosmologie vise \u00e0 mieux comprendre la source de l\u2019acc\u00e9l\u00e9ration de l\u2019expansion de l\u2019univers ainsi que la nature de l\u2019\u00e9nergie sombre et de la gravitation, et \u00e0 mieux cartographier la pr\u00e9sence de mati\u00e8re noire par l\u2019observation de plusieurs milliards de galaxies, retra\u00e7ant l\u2019histoire de l\u2019univers sur plus de 10 milliards d\u2019ann\u00e9es. 

De r\u00e9f\u00e9rence internationale, cette mission majeure du programme europ\u00e9en \u00ab Cosmic Vision \u00bb de l\u2019ESA regroupe plus de 1500 chercheurs, ing\u00e9nieurs et techniciens impliqu\u00e9s dans de nombreux pays europ\u00e9ens, avec une participation des USA et du Canada. 

Participant important de ce projet, la France via le CNES a dot\u00e9 les laboratoires de moyens pour contribuer \u00e0 cette mission. Avec environ 500 membres Euclid en France, le CNES, le CNRS, le CEA et les universit\u00e9s partenaires apportent d\u2019importantes ressources humaines et infrastructures techniques. 

\u00c0 Orsay, l\u2019Institut d\u2019Astrophysique Spatiale (IAS, une unit\u00e9 mixte de recherche CNRS et universit\u00e9 Paris-Sud \/ universit\u00e9 Paris-Saclay) a con\u00e7u, fabriqu\u00e9 et test\u00e9 l\u2019unit\u00e9 de calibration (CU, Calibration Unit) de l\u2019instrument VIS et contribue au d\u00e9veloppement du segment sol scientifique (SGS) \u2013 notamment l\u2019unit\u00e9 de fusion des donn\u00e9es des diff\u00e9rents instruments, appel\u00e9e OU-MER \u2013 ainsi qu\u2019aux Science Working Group (SWG). La CU (mod\u00e8le de vol) a d\u00e9j\u00e0 \u00e9t\u00e9 r\u00e9alis\u00e9e, test\u00e9e, livr\u00e9e et est en cours d'int\u00e9gration dans l'instrument VIS. 

Du 27 au 29 novembre 2019, la communaut\u00e9 fran\u00e7aise de la collaboration Euclid s\u2019est r\u00e9unie pour \u00e9changer et faire le point sur la mission. Cet \u00e9v\u00e9nement, organis\u00e9 par l\u2019IAS et qui a eu lieu dans les nouveaux locaux de l\u2019Institut de Math\u00e9matique d\u2019Orsay (IMO), a \u00e9t\u00e9 une excellente opportunit\u00e9 de d\u00e9couvrir l\u2019ensemble des nombreuses contributions fran\u00e7aises \u00e0 la mission Euclid, d\u2019en apprendre plus sur l\u2019avancement de la mission et de faciliter les \u00e9changes entre les participants. 

En outre, des \u00e9v\u00e8nements annexes ont \u00e9t\u00e9 organis\u00e9s \u00e0 l\u2019universit\u00e9 par les \u00e9quipes de l\u2019IAS, comme une d\u00e9monstration du fonctionnement du mod\u00e8le de qualification de la Calibration Unit de l\u2019instrument VIS d\u2019Euclid par l\u2019\u00e9quipe instrumentale de l\u2019IAS. Un concert de jazz a \u00e9t\u00e9 propos\u00e9 par des musiciens du conservatoire Paris-Saclay. Les coll\u00e8gues du CPPM et du LAM ont permis, en apportant leurs casques 3D, de pr\u00e9senter des films en r\u00e9alit\u00e9 virtuelle. Enfin, une d\u00e9gustation d\u2019un \u00ab p\u00e2t\u00e9 en cro\u00fbte de l\u2019univers \u00bb (qui reproduit les proportions du contenu de l\u2019univers en \u00e9nergie sombre, mati\u00e8re noire, mati\u00e8re baryonique et esp\u00e8ces relativistes, telles que mesur\u00e9es par le satellite Planck, dans lequel l\u2019IAS a jou\u00e9 un r\u00f4le majeur) r\u00e9alis\u00e9 sp\u00e9cialement pour l\u2019occasion a \u00e9t\u00e9 propos\u00e9e par le traiteur Sylvain Gasdon. Une photo de groupe a \u00e9t\u00e9 r\u00e9alis\u00e9e en imagerie visible et infrarouge, en clin d\u2019\u0153il aux futures donn\u00e9es Euclid qui couvriront justement le domaine visible et proche-infrarouge. Ces \u00e0 cot\u00e9s illustrent que astronomie, gastronomie et musique peuvent se croiser harmonieusement.<\/p>\n\t\t\n<\/div>\n

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De haut en bas et de gauche \u00e0 droite : D\u00e9monstration du fonctionnement de la Calibration Unit ; Casque de r\u00e9alit\u00e9 virtuelle ; concert de jazz du conservatoire Paris-Saclay ; photo de groupe infrarouge ; \u00ab p\u00e2t\u00e9 en cro\u00fbte de l\u2019univers \u00bb<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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R\u00e9f\u00e9rence<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Le site web de la conf\u00e9rence est : https:\/\/euclid-fr2019.sciencesconf.org\/<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Euclid est une mission spatiale de l\u2019Agence Spatiale Europ\u00e9enne (ESA) dont le d\u00e9collage est pr\u00e9vu pour 2022.<\/p>\n","protected":false},"author":3,"featured_media":1898,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-scientifiques-home"],"_links":{"self":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1770"}],"version-history":[{"count":11,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1770\/revisions"}],"predecessor-version":[{"id":1782,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1770\/revisions\/1782"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media\/1898"}],"wp:attachment":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}