{"id":9540,"date":"2014-01-25T13:52:39","date_gmt":"2014-01-25T13:52:39","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/la-supernova-sn-2014j-dans-m-82\/"},"modified":"2025-06-08T22:46:30","modified_gmt":"2025-06-08T20:46:30","slug":"la-supernova-sn-2014j-dans-m-82","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/la-supernova-sn-2014j-dans-m-82\/","title":{"rendered":"La supernova SN 2014J dans M 82"},"content":{"rendered":"<p>Bonjour,<br \/>\nune \u00e9claircie providentielle dans la grisaille de ces derniers temps m&rsquo;a permis d&rsquo;aller ce vendredi \u00e0 La Fosse pour tenter d&rsquo;imager la supernova qui vient d&rsquo;exploser dans M82. Il a fallu faire vite car, entre la disparition des champs de stratocumulus et l&rsquo;arriv\u00e9e des cirrus, le r\u00e9pit a \u00e9t\u00e9 de courte dur\u00e9e, \u00e0 tel point que je n&rsquo;ai pas pris le temps de faire une bonne mise au point, ce qui explique les \u00e9toiles bizarres dans l&rsquo;image. Mais bon, la supernova est dans la bo\u00eete. Je n&rsquo;ai au final retenu que 17 poses de 3 minutes \u00e0 400 iso, le reste \u00e9tant parti \u00e0 la poubelle car trop affect\u00e9 par les passages de cirrus.<\/p>\n<p>Donc, voici le r\u00e9sultat de 17 x 3 minutes de poses avec le 350d d\u00e9filtr\u00e9 Baader \u00e0 400 ISO en mode RAW. Lunette Televue NP101IS avec r\u00e9ducteur de focale 0.8x (focale r\u00e9sultante de 430mm) sur monture Takahashi NJP sans guidage ce 24 janvier 2014 depuis La Fosse. Les captures ont \u00e9t\u00e9 r\u00e9alis\u00e9es entre 22hr22 TU (d\u00e9but de la premi\u00e8re pose) et 23hr18 TU (fin de la derni\u00e8re pose).<\/p>\n<p>Le champ entier, taille r\u00e9duite \u00e0 50% de l&rsquo;originale:<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-reduit.jpg\" data-lbwps-width=\"1729\" data-lbwps-height=\"1149\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-reduit-300x199.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-reduit-300x199.jpg\" alt=\"\" width=\"300\" height=\"199\" \/><\/a><\/p>\n<p>On peut aussi voir sur cette image les galaxies NGC 2976 en haut \u00e0 droite et NGC 3077 dans le bas, en dessous et un peu \u00e0 droite de M81.<\/p>\n<p>Un crop de l&rsquo;image originale \u00e0 la taille r\u00e9elle recentr\u00e9 sur M81 et M82:<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-crop.jpg\" data-lbwps-width=\"1170\" data-lbwps-height=\"868\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-crop-300x223.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-crop-300x223.jpg\" alt=\"\" width=\"300\" height=\"223\" \/><\/a><\/p>\n<p>Et enfin, M82 avec la position de la supernova: <\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-annotee.jpg\" data-lbwps-width=\"279\" data-lbwps-height=\"254\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-annotee.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20140125-M82-supernova-annotee.jpg\" alt=\"\" width=\"279\" height=\"254\" \/><\/a><\/p>\n<p>Pour toutes les images, le nord est \u00e0 gauche.<br \/>\nJ-Luc<\/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;9540&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;La supernova SN 2014J dans M 82&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>Bonjour, une \u00e9claircie providentielle dans la grisaille de ces derniers temps m&rsquo;a permis d&rsquo;aller ce vendredi \u00e0 La Fosse pour tenter d&rsquo;imager la supernova qui vient d&rsquo;exploser dans M82. Il a fallu faire vite car, entre la disparition des champs de stratocumulus et l&rsquo;arriv\u00e9e des cirrus, le r\u00e9pit a \u00e9t\u00e9 de courte dur\u00e9e, \u00e0 tel [&hellip;]<\/p>\n","protected":false},"author":14,"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-9540","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9540","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\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=9540"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9540\/revisions"}],"predecessor-version":[{"id":12146,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9540\/revisions\/12146"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}