{"id":1747,"date":"2019-04-08T22:15:26","date_gmt":"2019-04-08T20:15:26","guid":{"rendered":"https:\/\/www-new.ias.u-psud.fr\/?p=1747"},"modified":"2026-09-11T14:26:10","modified_gmt":"2026-09-11T12:26:10","slug":"livraison-du-modele-de-vol-de-la-calibration-unit-de-linstrument-vis-de-la-mission-euclid","status":"publish","type":"post","link":"https:\/\/www.ias.u-psud.fr\/index.php\/2019\/04\/08\/livraison-du-modele-de-vol-de-la-calibration-unit-de-linstrument-vis-de-la-mission-euclid\/","title":{"rendered":"Livraison du mod\u00e8le de vol de la Calibration Unit de l\u2019instrument VIS de la mission Euclid"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1747\" class=\"elementor elementor-1747\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-365d0f3 e-flex e-con-boxed e-con e-parent\" data-id=\"365d0f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-84ab3f5 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"84ab3f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2-1024x1024.png\" class=\"attachment-large size-large wp-image-2727\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2-1024x1024.png 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2-300x300.png 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2-150x150.png 150w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2-768x768.png 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2019\/04\/Design-sans-titre2.png 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\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<div class=\"elementor-element elementor-element-08830fa e-con e-atomic-element e-flexbox-base e-1a7adf1 \" data-id=\"08830fa\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"08830fa\">\n    \t\t<div class=\"elementor-element elementor-element-857aec9 elementor-widget elementor-widget-text-editor\" data-id=\"857aec9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.ias.u-psud.fr\/sites\/default\/files\/news\/fig1_news_euclid.jpg\">Mod\u00e8le de vol du syst\u00e8me de calibration en vol (CU), apr\u00e8s l&rsquo;int\u00e9gration (\u00a9IAS)<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-f4f600f e-flex e-con-boxed e-con e-parent\" data-id=\"f4f600f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63f7b05 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"63f7b05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Livraison du mod\u00e8le de vol de la Calibration Unit de l\u2019instrument VIS de la mission Euclid<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-be0ca52 e-con e-atomic-element e-flexbox-base e-be0ca52-e96f1a7 \" data-id=\"be0ca52\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"be0ca52\">\n    \t\t\t<p class=\"e-98cf072-e5bab83 e-paragraph-base\" data-interaction-id=\"98cf072\">Lundi 12 mars 2019, l\u2019IAS a livr\u00e9 le mod\u00e8le de vol du syst\u00e8me de calibration en vol (calibration Unit, CU) de l\u2019instrument VIS de la mission Euclid. Euclid est la&nbsp; mission M2 du programme Cosmic Vision de l'ESA, dont l\u2019objectif scientifique est de cartographier l'Univers pour \u00e9lucider la cause de l'acc\u00e9l\u00e9ration de l'expansion.&nbsp; Elle y parviendra en regardant jusqu'\u00e0 10 milliards d'ann\u00e9es dans le pass\u00e9 et en mesurant tr\u00e8s pr\u00e9cis\u00e9ment la forme et la distribution des galaxies que contient l\u2019Univers.<br><br>Le t\u00e9lescope Euclid alimentera les deux instruments de la charge utile&nbsp;: le NISP (Near InfraRed SPectrometer, responsabilit\u00e9 LAM, France) et le VIS (VISible instrument, responsabilit\u00e9 MSSL, Royaume Uni). L\u2019IAS a con\u00e7u, r\u00e9alis\u00e9 et test\u00e9 le syst\u00e8me de calibration en vol (CU) de l\u2019instrument VIS. L\u2019objectif de la CU est de fournir un faisceau lumineux tr\u00e8s uniforme couvrant le plan focal afin de permettre la r\u00e9alisation de champs plats pendant toute la dur\u00e9e de la mission.&nbsp; La complexit\u00e9 technique majeure est l\u2019obtention du faisceau d\u2019une uniformit\u00e9 meilleure que 83 % sur l\u2019ensemble du grand plan focal qui fait 300 mm par 360 mm, et meilleure que 98% sur toutes les zones locales de 6mm x 6 mm. De plus, l\u2019extinction du faisceau doit se faire sur une zone de transition inf\u00e9rieure \u00e0 13mm afin de limiter la lumi\u00e8re parasite dans l\u2019instrument.&nbsp;<br><br>La CU est compos\u00e9e d\u2019une sph\u00e8re int\u00e9grante \u00e9clair\u00e9e par 6 LEDs dont les longueurs d\u2019ondes couvrent une gamme spectrale de 590 \u00e0 885 nm (VIS et proche infrarouge) produisant un faisceau qui est mis en forme en sortie de la sph\u00e8re par un masque, une lentille et un baffle. Suite \u00e0 la livraison par l'IAS du mod\u00e8le de vol de la CU, le mod\u00e8le de vol de l\u2019ensemble de l\u2019instrument VIS sera livr\u00e9 par le MSSL en novembre 2019 pour \u00eatre int\u00e9gr\u00e9 dans la charge utile Euclid. Le lancement de la mission est pr\u00e9vu en juillet 2022 \u00e0 bord d\u2019une fus\u00e9e Soyouz depuis Kourou. La r\u00e9alisation de la CU \u00e0 l\u2019IAS est financ\u00e9e par le CNES, le CNRS et l\u2019Universit\u00e9 Paris Sud.L<\/p>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-85693da e-flex e-con-boxed e-con e-parent\" data-id=\"85693da\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9b1e7af elementor-widget elementor-widget-image\" data-id=\"9b1e7af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-1024x602.jpg\" class=\"attachment-large size-large wp-image-1730\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-1024x602.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-300x177.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-768x452.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae76365 elementor-widget elementor-widget-text-editor\" data-id=\"ae76365\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.ias.u-psud.fr\/sites\/default\/files\/news\/fig2_news_euclid.jpg\">Vues et coupes annot\u00e9es de la CU<\/a>\u00a0<\/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<div class=\"elementor-element elementor-element-1f44f0c e-flex e-con-boxed e-con e-parent\" data-id=\"1f44f0c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9f2082 elementor-widget elementor-widget-image\" data-id=\"d9f2082\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-1024x602.jpg\" class=\"attachment-large size-large wp-image-1730\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-1024x602.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-300x177.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid-768x452.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig2_news_euclid.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-242a6ea elementor-widget elementor-widget-text-editor\" data-id=\"242a6ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.ias.u-psud.fr\/sites\/default\/files\/news\/fig3_news_euclid.jpg\">CU (entour\u00e9e en rouge) du mod\u00e8le structurel et thermique (STM), recouverte de MLI et int\u00e9gr\u00e9e dans la charge utile EUCLID STM. Le faisceau illuminant VIS est sch\u00e9matis\u00e9 en rose (\u00a9 Airbus defense system)<\/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<div class=\"elementor-element elementor-element-6be48e7 e-flex e-con-boxed e-con e-parent\" data-id=\"6be48e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8628cdd elementor-widget elementor-widget-image\" data-id=\"8628cdd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig4_news_euclid-1024x682.jpg\" class=\"attachment-large size-large wp-image-1732\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig4_news_euclid-1024x682.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig4_news_euclid-300x200.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig4_news_euclid-768x511.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/fig4_news_euclid.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e59959c elementor-widget elementor-widget-text-editor\" data-id=\"e59959c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.ias.u-psud.fr\/sites\/default\/files\/news\/fig4_news_euclid.jpg\">Une partie des \u00e9quipes de l&rsquo;IAS, du MSSL et du CEA lors des tests d&rsquo;acceptation de la CU (et du PMCU).<\/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<div class=\"elementor-element elementor-element-eefbba9 e-con-full e-flex e-con e-parent\" data-id=\"eefbba9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-2ba5a95 e-con-full e-flex e-con e-child\" data-id=\"2ba5a95\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4bbce6a elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"4bbce6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contacts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be34854 elementor-widget elementor-widget-text-editor\" data-id=\"be34854\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n<li><a href=\"https:\/\/www.ias.u-psud.fr\/pperso\/naghanim\/\">Nabila Aghanim<\/a>, Directrice de recherche, \u00c9quipe Cosmologie<\/li>\n<li><a href=\"https:\/\/www.ias.u-psud.fr\/annuaire?nom=philippon\">Anne Philippon<\/a>, Directrice technique de l&rsquo;IAS, \u00c9quipe Optique<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-16e26fb e-con-full e-flex e-con e-child\" data-id=\"16e26fb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2079001 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"2079001\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rence<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a1548d elementor-widget elementor-widget-text-editor\" data-id=\"9a1548d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/euclid.cnes.fr\/fr\/EUCLID\/Fr\/GP_mission.htm\" target=\"_blank\" rel=\"nofollow noopener noreferrer external\">CNES Euclid<\/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":"<p>Lundi 12 mars 2019, l\u2019IAS a livr\u00e9 le mod\u00e8le de vol du syst\u00e8me de calibration en vol (calibration Unit, CU) de l\u2019instrument VIS de la mission Euclid. <\/p>\n","protected":false},"author":3,"featured_media":2727,"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 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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-1747","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\/1747","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=1747"}],"version-history":[{"count":15,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1747\/revisions"}],"predecessor-version":[{"id":1807,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/posts\/1747\/revisions\/1807"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media\/2727"}],"wp:attachment":[{"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ias.u-psud.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}