{"id":3011,"date":"2019-10-18T08:30:55","date_gmt":"2019-10-18T06:30:55","guid":{"rendered":"https:\/\/www-new.ias.u-psud.fr\/?p=3011"},"modified":"2026-09-14T15:06:08","modified_gmt":"2026-09-14T13:06:08","slug":"succes-du-troisieme-vol-de-pilot","status":"publish","type":"post","link":"https:\/\/www.ias.u-psud.fr\/index.php\/2019\/10\/18\/succes-du-troisieme-vol-de-pilot\/","title":{"rendered":"Succ\u00e8s du troisi\u00e8me vol de PILOT"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3011\" class=\"elementor elementor-3011\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2025\/10\/mission-ballons.jpg-1024x576.webp\" class=\"attachment-large size-large wp-image-3005\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2025\/10\/mission-ballons.jpg-1024x576.webp 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2025\/10\/mission-ballons.jpg-300x169.webp 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2025\/10\/mission-ballons.jpg-768x432.webp 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2025\/10\/mission-ballons.jpg.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">\u00a9 CNES\/PRODIGIMA\/GABORIAUD Romain, 2021 <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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-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\">Succ\u00e8s du troisi\u00e8me vol de PILOT<\/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\">L\u2019instrument PILOT a d\u00e9coll\u00e9 le matin du 24 septembre depuis l\u2019a\u00e9roport de Timmins (Ontario, Canada). Ce troisi\u00e8me vol de l\u2019instrument, emport\u00e9 par un ballon stratosph\u00e9rique, a dur\u00e9 25 heures, dont trois heures de mont\u00e9e, une heure d\u00e9di\u00e9e aux r\u00e9glages de l\u2019instrument, et 20 heures d\u2019observations scientifiques \u00e0 l\u2019altitude-plafond (environ 38km de jour et 34km de nuit). Tous les syst\u00e8mes de vol ainsi que l\u2019instrument scientifique se sont comport\u00e9s comme pr\u00e9vu, et les donn\u00e9es obtenues sont de tr\u00e8s bonne qualit\u00e9.<br><br>L\u2019instrument a fini son vol \u00e0 900 km au Nord-Est de Timmins, au Nord de Montr\u00e9al. La nacelle a atterri \u00e0 seulement 200&nbsp;m d\u2019un lac (et heureusement pas dans le lac). Elle a \u00e9t\u00e9 ramen\u00e9e \u00e0 Timmins par l\u2019\u00e9quipe franco-canadienne de r\u00e9cup\u00e9ration, s\u00e9ch\u00e9e et nettoy\u00e9e, et elle est actuellement en route par bateau pour Toulouse. \u00c0 part des \u00e9raflures mineures sur certaines surfaces optiques, il semble que l\u2019instrument n\u2019a pas souffert.<br><br>PILOT est constitu\u00e9 d\u2019un miroir d\u2019environ un m\u00e8tre de diam\u00e8tre et d\u2019un ensemble de plusieurs matrices de bolom\u00e8tres (similaires \u00e0 celles de l'instrument Herschel\/PACS) divis\u00e9 en deux plans focaux apr\u00e8s que le faisceau a \u00e9t\u00e9 divis\u00e9 par un polariseur. L\u2019objectif scientifique est de mesurer l'\u00e9mission polaris\u00e9e des grains poussi\u00e8res du milieu interstellaire. Pour ce troisi\u00e8me vol, le remplacement du r\u00e9frig\u00e9rateur \u00e0 adsorption d\u2019h\u00e9lium 3 par celui d\u00e9velopp\u00e9 il y a plus de 25 ans pour l\u2019exp\u00e9rience PRONAOS a permis de refroidir les d\u00e9tecteurs \u00e0 des temp\u00e9ratures plus basses que lors deux vols pr\u00e9c\u00e9dents (entre 295 et 300&nbsp;mK), sans n\u00e9cessiter de recyclage en vol.<br><br>Ce vol a permis d\u2019observer l\u2019ensemble des sources astrophysiques pr\u00e9vues, en particulier la n\u00e9buleuse du Crabe, la galaxie d\u2019Androm\u00e8de, et plusieurs r\u00e9gions galactiques et r\u00e9gions de formation d\u2019\u00e9toiles. L\u2019ensemble de l\u2019\u00e9quipe scientifique est enthousiaste \u00e0 l\u2019id\u00e9e d\u2019analyser ces nouvelles donn\u00e9es, en particulier en les combinant aux donn\u00e9es obtenues lors du premier vol de l\u2019instrument, qui n\u2019\u00e9taient pas utilisables de fa\u00e7on isol\u00e9e.<br><br>PILOT est le r\u00e9sultat d'une collaboration entre le CNES, l\u2019IRAP, l\u2019IAS, le CEA, l\u2019Universit\u00e9 de Cardiff et l\u2019Universit\u00e9 de Rome. L\u2019IAS assure la ma\u00eetrise d'\u0153uvre du photom\u00e8tre de PILOT.&nbsp;Contact \u00e0 l\u2019IAS&nbsp;: <a target=\"_blank\" href=\"https:\/\/www.ias.u-psud.fr\/annuaire?nom=maffei\">Bruno Maffei<\/a>&nbsp;<\/p>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-7fd5f6d e-con-full e-flex e-con e-parent\" data-id=\"7fd5f6d\" 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-014e725 e-con-full e-flex e-con e-child\" data-id=\"014e725\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9d2f09b elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"9d2f09b\" 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\">Liens<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cd242d elementor-widget elementor-widget-text-editor\" data-id=\"2cd242d\" 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>Photos et films du lancement\u00a0: <a href=\"https:\/\/twitter.com\/louvelstephane\">https:\/\/twitter.com\/louvelstephane<\/a><\/p><p>Site web du projet PILOT\u00a0: <a href=\"http:\/\/pilot.irap.omp.eu\/\">http:\/\/pilot.irap.omp.eu\/<\/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>L\u2019instrument PILOT a d\u00e9coll\u00e9 le matin du 24 septembre depuis l\u2019a\u00e9roport de Timmins (Ontario, Canada).<\/p>\n","protected":false},"author":3,"featured_media":3005,"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":"disabled","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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