{"id":97398,"date":"2025-04-21T19:10:54","date_gmt":"2025-04-21T17:10:54","guid":{"rendered":"https:\/\/www.astb.se\/cassiopeiabloggen\/?p=97398"},"modified":"2025-04-28T12:38:31","modified_gmt":"2025-04-28T10:38:31","slug":"nr-17-2025-2","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2025\/04\/21\/nr-17-2025-2\/","title":{"rendered":"Nr 17 2025"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Hubble-teleskopet firar 35 \u00e5r<\/h2>\n\n\n\n<p>TBO-biblioteket p\u00e5 v\u00e5rt observatorium i Oxie har en hel del superintressanta b\u00f6cker. T ex <strong>Freeman Dysons <\/strong>bok <em>Infinite in all directions<\/em> (Penguin, 1988), en bok i vilken denne sp\u00e4nnande och m\u00e5ngvetande forskare &#8211; knuten till Institute of Advanced Study, Princeton, mottagare av det relig\u00f6sa Templetonpriset 2000 etc &#8211; diskuterar diverse djupa saker. Bl a ifr\u00e5gas\u00e4tter han storsatsningar som det dyra Hubble-teleskopet, en i Dysons \u00f6gon  &#8220;one shot mission&#8221; som han ville ers\u00e4tta med en rad billigare 1-meters rymdteleskop. F\u00f6rst med Webb-teleskopet fick Hubble efter trettio \u00e5r en v\u00e4rdig eftertr\u00e4dare som kunde g\u00e5 vidare p\u00e5 Hubbles uppt\u00e4ckter. Dyson kunde i st\u00e4llet t\u00e4nka sig skicka upp 1-metersteleskop med n\u00e5gra \u00e5rs mellanrum, med ny uppgraderad teknik och optik som hade gett successivt mer kunskap. &#8220;&#8230;the Hubble telescope is a basket with too many eggs in it&#8221;.<\/p>\n\n\n\n<p>Small is beautiful &#8211; och billigt &#8211; varf\u00f6r Dyson var en stor anh\u00e4ngare av den astrometriska Hipparchos-sonden. Den g\u00e5ngen. Hur han hade sett p\u00e5 utecklingen i dag vet vi inte. Boken bygger p\u00e5 en rad  tidigare f\u00f6rel\u00e4sningar. Dyson levde \u00e5ren 1923-2020.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2025\/04\/hubble-35-anniversary-graphic-blue-rgb.png\"><img decoding=\"async\" width=\"380\" height=\"400\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2025\/04\/hubble-35-anniversary-graphic-blue-rgb.png\" alt=\"\" class=\"wp-image-97418\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2025\/04\/hubble-35-anniversary-graphic-blue-rgb.png 380w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2025\/04\/hubble-35-anniversary-graphic-blue-rgb-285x300.png 285w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/><\/a><\/figure><\/div>\n\n\n<p>Nu i april firar i vilket fall Hubble-teleskopet sina f\u00f6rsta 35 \u00e5r och NASA och ESA firar jubileet med att ge oss ny bilddokumentation av ikoniska  rymdobjekt. 1,6 miljoner observationer har presterat en Hubble ST-katalog p\u00e5 \u00f6ver 53 000 himlaobjekt och tv\u00e5 av dem uppm\u00e4rksammas s\u00e4rskilt i reliserna: \u00d6rnnebulosan i Vintergatan och Sombrerohatten, M 104-galaxen 30 miljoner ljus\u00e5r bort.<\/p>\n\n\n\n<p>YouTube-filmerna talar f\u00f6r sig sj\u00e4lva!<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"nv-iframe-embed\"><iframe title=\"Pan of the Eagle Nebula\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/nWrlGQQicNk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"nv-iframe-embed\"><iframe title=\"Pan video: Sombrero Galaxy\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/z2FBsAWoFYM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>M\u00e4ngder av info och bilder<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/overview\/hubbles-35th-anniversary\/\" title=\"\"> p\u00e5 NASA:s 35-\u00e5rssida.<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hubble-teleskopet firar 35 \u00e5r TBO-biblioteket p\u00e5 v\u00e5rt observatorium i Oxie har en hel del superintressanta b\u00f6cker. T ex Freeman Dysons bok Infinite in all directions (Penguin, 1988), en bok i vilken denne sp\u00e4nnande och m\u00e5ngvetande forskare &#8211; knuten till Institute of Advanced Study, Princeton, mottagare av det relig\u00f6sa Templetonpriset 2000 etc &#8211; diskuterar diverse djupa&hellip;&nbsp;<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/2025\/04\/21\/nr-17-2025-2\/\" rel=\"bookmark\">L\u00e4s mer &raquo;<span class=\"screen-reader-text\">Nr 17 2025<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/97398"}],"collection":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/comments?post=97398"}],"version-history":[{"count":18,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/97398\/revisions"}],"predecessor-version":[{"id":97420,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/97398\/revisions\/97420"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=97398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=97398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=97398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}