{"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\/da\/super-sensitive_space_camera_takes_shape\/","title":{"rendered":"Superf\u00f8lsomt rumkamera tager form"},"content":{"rendered":"
\n

Det st\u00f8rste digitalkamera, der nogensinde er bygget til en rummission, er for nylig blevet f\u00e6rdiggjort efter mange ugers h\u00e5rdt arbejde. Det best\u00e5r af 106 separate elektroniske detektorer, og det f\u00e6rdige \u201cmilliardpixel-array\u201d skal fungere som det superf\u00f8lsomme \u201c\u00f8je\u201d i ESA\u2019s Gaia-mission, der har til form\u00e5l at kortl\u00e6gge galakserne.<\/p>\n<\/div>\n

Mens det blotte \u00f8je kan se flere tusinde stjerner p\u00e5 en klar nat, vil Gaia unders\u00f8ge en milliard stjerner i vores egen galakse, M\u00e6lkevejen. I l\u00f8bet af en fem\u00e5rig mission, der starter i 2013, vil den sende de hidtil bedste data tilbage om disse stjerners positioner og bev\u00e6gelser samt deres lysstyrke.<\/p>\n

\"Gaia
Gaia-kameraanl\u00e6gget<\/figcaption><\/figure>\n

For at kunne opdage stjerner, der er op til en million gange svagere, end det menneskelige \u00f8je kan se, vil Gaia v\u00e6re udstyret med en r\u00e6kke ladningskoblede sensorer (CCD\u2019er), som er avancerede versioner af de chips, der bruges i almindelige digitalkameraer. Disse rektangul\u00e6re detektorer, der er udviklet i Storbritannien, er lidt mindre end et kreditkort \u2013 hver m\u00e5ler 4,7 x 6 cm \u2013 men tyndere end et menneskeh\u00e5r!<\/p>\n

Mosaikken p\u00e5 0,5 x 1,0 meter blev samlet p\u00e5 anl\u00e6gget i Toulouse hos Gaias hovedentrepren\u00f8r, Astrium France. Teknikerne satte omhyggeligt hver enkelt CCD sammen, s\u00e5 der kun var en afstand p\u00e5 1 mm mellem dem. De arbejdede i dobbeltskift under strenge renrumsbetingelser og monterede i gennemsnit fire CCD'er om dagen, indtil de endelig afsluttede opgaven den 1. juni.<\/p>\n

Det f\u00e6rdige array ligner et lille flisebelagt omr\u00e5de, der er opstillet i syv r\u00e6kker. N\u00e5r de befinder sig i kredsl\u00f8b, vil detektorerne blive holdt ved en temperatur p\u00e5 \u2013110 \u00b0C for at \u00f8ge deres f\u00f8lsomhed. Gaia vil operere 1,5 millioner km v\u00e6k, p\u00e5 Jordens natside. Mens den roterer, vil Gaias to teleskoper feje hen over himlen og studere hver enkelt stjerne i detaljer, n\u00e5r den bev\u00e6ger sig ind i deres synsfelt.<\/p>","protected":false},"excerpt":{"rendered":"

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 […]<\/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\/da\/wp-json\/wp\/v2\/posts\/791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=791"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/791\/revisions"}],"predecessor-version":[{"id":4686,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/791\/revisions\/4686"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=791"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=791"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=791"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=791"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=791"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=791"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=791"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}