{"id":791,"date":"2011-07-12T07:46:00","date_gmt":"2011-07-12T05:46:00","guid":{"rendered":"https:\/\/kids.esa.int\/super-sensitive_space_camera_takes_shape\/"},"modified":"2026-10-08T00:32:18","modified_gmt":"2026-10-07T22:32:18","slug":"super-sensitive_space_camera_takes_shape","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/super-sensitive_space_camera_takes_shape\/","title":{"rendered":"L'appareil-photo spatial ultra-sensible prend forme"},"content":{"rendered":"<div class=\"lede\">\n<p>Le plus gros appareil-photo jamais con\u00e7u pour une mission spatiale vient d'\u00eatre achev\u00e9 apr\u00e8s plusieurs semaines de travail intense. Dot\u00e9 de 106 d\u00e9tecteurs \u00e9lectroniques individuels, le panneau d'un \u00ab milliard de pixels \u00bb sera un \u00ab \u0153il \u00bb ultra-sensible, charg\u00e9 de dresser la carte de la Galaxie dans le cadre de la mission Gaia de l'ESA.<\/p>\n<\/div>\n<p>Si l'homme parvient \u00e0 observer plusieurs milliers d'\u00e9toiles \u00e0 l'\u0153il nu par nuit claire, Gaia observera un milliard d'\u00e9toiles au sein de notre galaxie, la Voie Lact\u00e9e. Au cours de la mission d'une dur\u00e9e de 5 ans qui d\u00e9butera en 2013, Gaia transmettra les meilleures donn\u00e9es jamais obtenues sur les positions et les mouvements de ces \u00e9toiles, ainsi que sur leur luminosit\u00e9.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1024\" data-credit=\"Astrium\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/07\/Gaia_camera_array2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2011\/07\/gaia_camera_array2\/17901013-2-eng-GB\/Gaia_camera_array.jpg\" alt=\"Gaia camera array\"><figcaption>Gaia camera array<\/figcaption><\/figure>\n<p>Pour d\u00e9tecter des \u00e9toiles un million de fois plus petites que celles visibles \u00e0 l'\u0153il nu, Gaia sera \u00e9quip\u00e9 d'un panneau de dispositifs \u00e0 couplage de charge (DCC), une version sophistiqu\u00e9e des puces \u00e9quipant nos appareils-photos num\u00e9riques. Con\u00e7us au Royaume-Uni, ces d\u00e9tecteurs rectangulaires de 4,7 x 6 cm sont un peu plus petits qu'une carte bancaire et surtout plus fins qu'un cheveu humain !<\/p>\n<p>La mosa\u00efque de 0,5 x 1,0 m\u00e8tre a \u00e9t\u00e9 assembl\u00e9e \u00e0 Toulouse dans les locaux d'Astrium France, le ma\u00eetre d\u2019\u0153uvre du projet Gaia. Les techniciens ont d\u00e9licatement install\u00e9 chaque DCC, laissant un espace d'un millim\u00e8tre seulement entre chacun d'entre eux. Deux \u00e9quipes se sont relay\u00e9es pour installer en salle blanche 4 DCC par jour en moyenne, achevant leur mission le 1er juin.<\/p>\n<p>Le panneau achev\u00e9 ressemble \u00e0 une petite surface carrel\u00e9e de sept rang\u00e9es. Une fois en orbite, les d\u00e9tecteurs seront maintenus \u00e0 une temp\u00e9rature de \u2013110\u00baC pour accro\u00eetre leur sensibilit\u00e9. Gaia se trouvera \u00e0 1,5 million de km de la Terre sur sa face nocturne. Pendant que Gaia tournera sur lui-m\u00eame, les deux t\u00e9lescopes balaieront le ciel pour \u00e9tudier en d\u00e9tail chaque \u00e9toile qui traversera leur champ de vision.<\/p>","protected":false},"excerpt":{"rendered":"<p>The largest digital camera ever built for a space mission has recently been completed after many weeks of hard work. Made up of 106 separate electronic detectors, the resulting \u201cbillion-pixel [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2010\/12\/gaia2\/17901642-2-eng-GB\/Gaia.jpg","esa_banner_description":"Gaia","esa_banner_credit":"ESA, image by C.Carreau","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/12\/Gaia2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,21],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-791","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=791"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/791\/revisions"}],"predecessor-version":[{"id":4686,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/791\/revisions\/4686"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=791"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=791"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=791"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=791"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=791"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=791"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=791"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}