{"id":10197,"date":"2021-07-07T23:59:49","date_gmt":"2021-07-07T23:59:49","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/soleil-en-h-alpha\/"},"modified":"2025-06-23T21:17:45","modified_gmt":"2025-06-23T19:17:45","slug":"soleil-en-h-alpha","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/soleil-en-h-alpha\/","title":{"rendered":"Soleil en H-alpha"},"content":{"rendered":"<p>Auteur: Philippe Lousberg (philippe.lousberg@outlook.fr)<\/p>\n<p>Un peu frustr\u00e9 d&rsquo;astronomie nocturne par la m\u00e9t\u00e9o et mes activit\u00e9s professionnelles, j&rsquo;ai eu l&rsquo;opportunit\u00e9 d&rsquo;acqu\u00e9rir en seconde main un filtre Daystar Quark Chromosph\u00e8re, que j&rsquo;utilise actuellement sur une petite lunette 432\/72 mm. Je suis en train de d\u00e9couvrir un domaine passionnant, aid\u00e9 en cela par les conseils d&rsquo;Alexandre Lhoest et la lecture du livre qu&rsquo;il recommande, Astronomie Solaire.<\/p>\n<p>Le 13 juin dernier, j&rsquo;ai suivi pendant environ 2 heures l&rsquo;\u00e9volution assez rapide d&rsquo;une protub\u00e9rance initialement \u00ab\u00a0suspendue\u00a0\u00bb.<br \/>\nManquant de temps pour tout traiter, je livre ici 2 images pr\u00e9liminaires. Cam\u00e9ra Zwo ASI 174 MM. Fichiers vid\u00e9o SER, assemblage sous AS!3 et traitement sous GIMP (ondelettes + niveaux). Le nord est en haut et l&rsquo;est, \u00e0 gauche.<\/p>\n<p>La premi\u00e8re, r\u00e9sultat de 800 images additionn\u00e9es, temps de pose de 2.5 ms, pour mettre en \u00e9vidence la chromosph\u00e8re sur le disque avec une tache, repr\u00e9sentation de la Terre \u00e0 l&rsquo;\u00e9chelle.<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-12_14_14_terre14951.jpeg\" data-lbwps-width=\"1617\" data-lbwps-height=\"1020\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-12_14_14_terre14951-300x189.jpeg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-12_14_14_terre14951-300x189.jpeg\" alt=\"\" width=\"300\" height=\"189\" \/><\/a><\/p>\n<p>La deuxi\u00e8me, m\u00eame r\u00e9gion un peu moins de 2h plus tard, environ 600 images additionn\u00e9es, temps de pose de 15 ms pour accentuer les protub\u00e9rances au limbe. Masquage au traitement du disque surexpos\u00e9, fa\u00e7on \u00ab\u00a0coronographe\u00a0\u00bb.<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-13_48_46_corono.jpeg\" data-lbwps-width=\"1525\" data-lbwps-height=\"1061\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-13_48_46_corono-300x209.jpeg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/49_20210707-13_48_46_corono-300x209.jpeg\" alt=\"\" width=\"300\" height=\"209\" \/><\/a><\/p>\n<p>A bient\u00f4t,<\/p>\n<p>Philippe<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;10197&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;10&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Veuillez voter&quot;,&quot;legend&quot;:&quot;0\\\/10 - (0 vote)&quot;,&quot;size&quot;:&quot;18&quot;,&quot;title&quot;:&quot;Soleil en H-alpha&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"6\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"7\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"8\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"9\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"10\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 18px; height: 18px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 14.4px;\">\n            <span class=\"kksr-muted\">Veuillez voter<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Auteur: Philippe Lousberg (philippe.lousberg@outlook.fr) Un peu frustr\u00e9 d&rsquo;astronomie nocturne par la m\u00e9t\u00e9o et mes activit\u00e9s professionnelles, j&rsquo;ai eu l&rsquo;opportunit\u00e9 d&rsquo;acqu\u00e9rir en seconde main un filtre Daystar Quark Chromosph\u00e8re, que j&rsquo;utilise actuellement sur une petite lunette 432\/72 mm. Je suis en train de d\u00e9couvrir un domaine passionnant, aid\u00e9 en cela par les conseils d&rsquo;Alexandre Lhoest et [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-10197","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=10197"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10197\/revisions"}],"predecessor-version":[{"id":15660,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10197\/revisions\/15660"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}