{"id":1693,"date":"2022-01-21T16:09:40","date_gmt":"2022-01-21T15:09:40","guid":{"rendered":"https:\/\/motsdaubepine.fr\/caussemots\/?p=1693"},"modified":"2024-10-27T09:47:12","modified_gmt":"2024-10-27T08:47:12","slug":"premieres-photographies-de-la-galaxie-andromede","status":"publish","type":"post","link":"https:\/\/motsdaubepine.fr\/caussemots\/index.php\/2022\/01\/21\/premieres-photographies-de-la-galaxie-andromede\/","title":{"rendered":"Galaxie Androm\u00e8de  : retour d&rsquo;exp\u00e9rience"},"content":{"rendered":"<h4><span style=\"color: #0000ff; font-size: 18pt;\"><strong>Galaxie d&rsquo;Androm\u00e8de : histoire de ma premi\u00e8re d\u00e9couverte jusqu&rsquo;\u00e0 la r\u00e9alisation d&rsquo;une premi\u00e8re photographie repr\u00e9sentative\u00a0<\/strong> <\/span><\/h4>\n<p>La vision et la photographie de la galaxie d&rsquo;Androm\u00e8de r\u00e9sume bien mon parcours d&rsquo;apprentissage en observations astronomiques et en astrophotographie.<\/p>\n<h4><strong>Galaxie d&rsquo;Androm\u00e8de : un peu d&rsquo;histoire<br \/>\n<\/strong><\/h4>\n<p><a href=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Pers\u00e9e.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1179 size-full alignleft\" src=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Pers\u00e9e.png\" alt=\"\" width=\"280\" height=\"280\" srcset=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Pers\u00e9e.png 280w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Pers\u00e9e-150x150.png 150w\" sizes=\"auto, (max-width: 280px) 100vw, 280px\" \/><\/a><\/p>\n<p>C&rsquo;est le 31 \u00e8me objet identifi\u00e9 par Charles Messier, dans son catalogue. Elle est nomm\u00e9e M31.<\/p>\n<p>Situ\u00e9e \u00e0 pr\u00e8s de 2,5 millions d\u2019ann\u00e9es-lumi\u00e8re de nous,\u00a0 la galaxie d\u2019Androm\u00e8de est la plus grande voisine de la Voie lact\u00e9e.<\/p>\n<p>La galaxie spirale Androm\u00e8de s&rsquo;est structur\u00e9e il y a moins de 3 milliards d&rsquo;ann\u00e9es, \u00e0 la suite d&rsquo;une collision majeure survenue entre deux galaxies.<\/p>\n<p>La galaxie d&rsquo;Androm\u00e8de fonce dans la direction de notre galaxie, la Voie lact\u00e9e, \u00e0 la vitesse stup\u00e9fiante de 111 km par seconde, soit 3,5 milliards km\/an. Les deux galaxies finiront par fusionner et par n&rsquo;en faire plus qu&rsquo;une dans 4 milliards d&rsquo;ann\u00e9es.<\/p>\n<p>&nbsp;<\/p>\n<h4><strong>Premi\u00e8re vision en 2014 de la Galaxie d&rsquo;Androm\u00e8de, avec mon petit t\u00e9lescope Maksutov<\/strong><\/h4>\n<p>A cette \u00e9poque, je d\u00e9couvrais l&rsquo;astronomie, et les constellations. C&rsquo;est en cheminant pas \u00e0 pas d&rsquo;\u00e9toiles en \u00e9toiles que je l&rsquo;ai trouv\u00e9e\u00a0 \u00e0 l&rsquo;est du ciel nocturne en partant du carr\u00e9 de P\u00e9gase. Puis j&rsquo;ai suivi la constellation d&rsquo;Androm\u00e8de, tout en gardant un \u0153il sur la constellation de Cassiop\u00e9e.\u00a0 Elle est dans ce secteur, et je l&rsquo;ai d\u00e9couverte, simple halo blanch\u00e2tre \u00e0 travers l&rsquo;oculaire de mon petit t\u00e9lescope ! A gauche sur la photo, \u00e0 c\u00f4t\u00e9 maintenant de son grand fr\u00e8re : un Newton 250&#215;1200 sur une monture motoris\u00e9e NEQ6.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1279 size-full\" src=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/06\/Observatoire-1-1.jpg\" alt=\"Galaxie Androm\u00e8de d\u00e9couverte avec un petit Maksutov\" width=\"1200\" height=\"801\" srcset=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/06\/Observatoire-1-1.jpg 1200w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/06\/Observatoire-1-1-300x200.jpg 300w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/06\/Observatoire-1-1-768x513.jpg 768w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/06\/Observatoire-1-1-1024x684.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h6><\/h6>\n<h4><strong>08 Septembre 2018, je me lance dans l&rsquo;astrophotographiede la Galaxie d&rsquo;Androm\u00e8de<br \/>\n<\/strong><\/h4>\n<p><strong>7 photos prises en mode Raw avec un <\/strong><strong>Nikon D7100 mont\u00e9 sur le Newton 250&#215;1200. Temps de pose 60 secondes par photo avec un r\u00e9glage ISO \u00e0 800. Alignement polaire soign\u00e9, prise de darks, Flats, offset.<br \/>\n<\/strong><\/p>\n<p><a href=\"https:\/\/motsdaubepine.fr\/caussemots\/index.php\/reglage-nikon\/\">Voir les pr\u00e9cisions techniques sous ce lien<\/a><\/p>\n<p>Mais quelle d\u00e9ception lors de l&rsquo;assemblage des photos avec les logiciels IRIS et Deepskystacker ! Impossible d&rsquo;avoir un rendu correct ! En effet, les couleurs viraient au vert. Mon appareil Nikon n&rsquo;\u00e9tait pas bien reconnu par ces logiciels ou je ne les ma\u00eetrisais pas assez. Le r\u00e9sultat \u00e9tait moins bon que la\u00a0 prise de vue unique en mode JPEG Fine ci-dessous avec le mode r\u00e9duction de bruit activ\u00e9 sur le Nikon.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1126 size-full\" src=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Androm\u00e8de_5561.WEB_.jpg\" alt=\"Galaxie Androm\u00e8de , premi\u00e8res photographies \" width=\"2604\" height=\"1736\" srcset=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Androm\u00e8de_5561.WEB_.jpg 2604w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Androm\u00e8de_5561.WEB_-300x200.jpg 300w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Androm\u00e8de_5561.WEB_-768x512.jpg 768w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2020\/01\/Androm\u00e8de_5561.WEB_-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 2604px) 100vw, 2604px\" \/><\/p>\n<h4><strong>Janvier 2022\u00a0 : Compositage des photos de la Galaxie d&rsquo;Androm\u00e8de avec logiciel Siril r\u00e9alis\u00e9 en Janvier 2022<br \/>\n<\/strong><\/h4>\n<p>J&rsquo;ai d\u00e9couvert ce logiciel en Janvier 2022. Je cherchais un logiciel \u00e9quivalent \u00e0 IRIS et Deepskystacker qui fonctionne sous Linux et Siril a r\u00e9pondu \u00e0 mes attentes. J&rsquo;ai repris mes photographies en mode Raw de 2018 et voici le r\u00e9sultat !<\/p>\n<div id=\"attachment_1613\" style=\"width: 6046px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1613\" class=\"wp-image-1613 size-full\" src=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2022\/01\/M31.WEB-Qualit\u00e9-75.jpg\" alt=\"Galaxie Androm\u00e8de : M31 . Nikon D7100 sur Newton 250x1200\" width=\"6036\" height=\"4020\" srcset=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2022\/01\/M31.WEB-Qualit\u00e9-75.jpg 6036w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2022\/01\/M31.WEB-Qualit\u00e9-75-300x200.jpg 300w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2022\/01\/M31.WEB-Qualit\u00e9-75-768x511.jpg 768w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2022\/01\/M31.WEB-Qualit\u00e9-75-1024x682.jpg 1024w\" sizes=\"auto, (max-width: 6036px) 100vw, 6036px\" \/><p id=\"caption-attachment-1613\" class=\"wp-caption-text\">Galaxie d&rsquo;Androm\u00e8de M31<\/p><\/div>\n<p><strong><a href=\"https:\/\/www.learn.siril.org\/#\">Assemblage des photos avec Siril : suivre ce lien<\/a><\/strong><\/p>\n<h4><strong>Prochaines\u00a0 \u00e9tapes pour une plus belle photo de la Galaxie d&rsquo;Androm\u00e8de : il faut toujours essayer de progresser !<br \/>\n<\/strong><\/h4>\n<ul>\n<li>Augmenter le nombre d&rsquo;images brutes en pilotant le Nikon avec le logiciel APT<\/li>\n<li>Utiliser une cam\u00e9ra CCD \u00e0 la place du Nikon, pour ne pas faire \u00ab\u00a0chauffer\u00a0\u00bb son capteur et \u00e9viter le filtrage des couleurs rouges<\/li>\n<li>Autoguidage avec petite lunette et une cam\u00e9ra vid\u00e9o et PHD Guiding sur PC afin de pouvoir augmenter les temps de pose unitaires<\/li>\n<li>Filtres, lentilles ou correcteurs de Coma pour la partie bord de champ des photos, pour avoir toutes les \u00e9toiles nettes et bien rondes<\/li>\n<\/ul>\n<p><strong>Mon objectif rivaliser avec cette photographie : photographie prise par un\u00a0 t\u00e9lescope 12.5 (300 mm) pouces Ritchey-Chr\u00e9tien : Astronome amateur Robert Gendler.<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-611 size-full\" src=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2018\/09\/Andom\u00e8de-M31.jpg\" alt=\"\" width=\"1280\" height=\"1768\" srcset=\"https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2018\/09\/Andom\u00e8de-M31.jpg 1280w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2018\/09\/Andom\u00e8de-M31-217x300.jpg 217w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2018\/09\/Andom\u00e8de-M31-768x1061.jpg 768w, https:\/\/motsdaubepine.fr\/caussemots\/wp-content\/uploads\/2018\/09\/Andom\u00e8de-M31-741x1024.jpg 741w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Galaxie d&rsquo;Androm\u00e8de : histoire de ma premi\u00e8re d\u00e9couverte jusqu&rsquo;\u00e0 la r\u00e9alisation d&rsquo;une premi\u00e8re photographie repr\u00e9sentative\u00a0 La vision et la photographie de la galaxie d&rsquo;Androm\u00e8de r\u00e9sume bien mon parcours d&rsquo;apprentissage en observations astronomiques et en astrophotographie. Galaxie d&rsquo;Androm\u00e8de : un peu <a class=\"more-link\" href=\"https:\/\/motsdaubepine.fr\/caussemots\/index.php\/2022\/01\/21\/premieres-photographies-de-la-galaxie-andromede\/\">Lire plus &#8230;<\/a><\/p>\n","protected":false},"author":8,"featured_media":1613,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1693","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Galaxie Androm\u00e8de : retour d&#039;exp\u00e9rience - L&#039;observatoire du Causse...mots<\/title>\n<meta name=\"description\" content=\"Galaxie d&#039;Androm\u00e8de , comment la trouver et la photographier quand on est d\u00e9butant en astronomie et astrophographie\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/motsdaubepine.fr\/caussemots\/index.php\/2022\/01\/21\/premieres-photographies-de-la-galaxie-andromede\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Galaxie Androm\u00e8de : retour d&#039;exp\u00e9rience - 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