{"id":12502,"date":"2026-05-14T08:00:00","date_gmt":"2026-05-14T06:00:00","guid":{"rendered":"https:\/\/www.blog.neoprog.eu\/?p=12502"},"modified":"2026-05-03T09:47:20","modified_gmt":"2026-05-03T07:47:20","slug":"photographier-les-etoiles-la-monture-equatoriale","status":"publish","type":"post","link":"https:\/\/www.blog.neoprog.eu\/index.php\/2026\/05\/14\/photographier-les-etoiles-la-monture-equatoriale\/","title":{"rendered":"Photographier les \u00e9toiles &#8211; la monture \u00e9quatoriale"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27.jpg\" alt=\"\" class=\"wp-image-12550\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27.jpg 1024w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-300x200.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-768x512.jpg 768w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-450x300.jpg 450w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Nous avons vu dans <a href=\"https:\/\/www.blog.neoprog.eu\/index.php\/2026\/04\/16\/photographier-les-etoiles-la-photo-au-trepied\/\" type=\"post\" id=\"12479\">un pr\u00e9c\u00e9dent billet<\/a> qu&rsquo;avec un simple tr\u00e9pied et un appareil photo, il \u00e9tait d\u00e9j\u00e0 possible de r\u00e9aliser des images du ciel. Mais nous avons vu \u00e9galement que le temps de pose \u00e9tait fortement contraint par la focale de l&rsquo;objectif utilis\u00e9 et la rotation de la terre.<\/p>\n\n\n\n<p>Il existe une solution pour s&rsquo;affranchir du mouvement de rotation de la terre, la monture \u00e9quatoriale. Il s&rsquo;agit d&rsquo;un \u00e9quipement, souvent motoris\u00e9, qui va compenser le d\u00e9placement apparent de la voute c\u00e9leste. La monture se fixe sur un tr\u00e9pied et appareil photo ou tout autre instrument, comme un t\u00e9lescope, sur la monture.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"624\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-schema.jpg\" alt=\"\" class=\"wp-image-12547\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-schema.jpg 700w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-schema-300x267.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-schema-337x300.jpg 337w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p>Il existe de nombreuses montures \u00e9quatoriales pr\u00e9vues pour supporter des \u00e9quipements plus ou moins lourds. Les montures sont g\u00e9n\u00e9ralement lourdes et relativement encombrantes, il est donc important de bien la choisir avant de se lancer dans un achat.<\/p>\n\n\n\n<p>Le crit\u00e8re le plus important \u00e0 prendre en compte est la charge support\u00e9e par la monture. Si le constructeur annonce X kilos, appliquez un facteur 2\/3 pour l&rsquo;astro photographie. Donc si notre monture supporte 9 kg, votre mat\u00e9riel ne devra pas d\u00e9passer 6 kg. Ne comptez pas le poids des contre-poids dans ce calcul. Car oui, il faut souvent ajouter des contre poids pour \u00e9quilibrer une monture \u00e9quatoriale.<\/p>\n\n\n\n<p>Un appareil photo p\u00e8se 0,5 \u00e0 1 kg avec un objectif qui peut aller jusqu&rsquo;\u00e0 3 kg. Donc pour une monture \u00e9quatoriale supportant juste un appareil photo, tablez sur un poids de 3 kg, soit une monture qui supporte une charge th\u00e9orique de 5 kg comme une monture Skywatcher Star Adventurer par exemple.<\/p>\n\n\n\n<p>Comprenez bien que cette &lsquo;petite&rsquo; monture p\u00e8se d\u00e9j\u00e0 ses 7.5 Kg avec le tr\u00e9pied et le contrepoids. Ne comptez pas partir en randonn\u00e9e avec un tel mat\u00e9riel ou alors musclez-vous avant.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/Monture-Skywatcher-Star-Adventurer-GTi-Wi-Fi-GoTo.jpg\" alt=\"\" class=\"wp-image-12505\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/Monture-Skywatcher-Star-Adventurer-GTi-Wi-Fi-GoTo.jpg 800w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/Monture-Skywatcher-Star-Adventurer-GTi-Wi-Fi-GoTo-300x300.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/Monture-Skywatcher-Star-Adventurer-GTi-Wi-Fi-GoTo-150x150.jpg 150w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/Monture-Skywatcher-Star-Adventurer-GTi-Wi-Fi-GoTo-768x768.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Monture \u00e9quatoriale Star Adenturer<\/figcaption><\/figure>\n\n\n\n<p>L&rsquo;installation d&rsquo;une monture \u00e9quatoriale va demander plus d&rsquo;efforts qu&rsquo;un simple tr\u00e9pied photo. Vous allez tout d&rsquo;abord devoir orienter le tr\u00e9pied vers le nord (pour l&rsquo;h\u00e9misph\u00e8re nord) et le mettre \u00e0 niveau. Ensuite vous allez installer la monture dessus et r\u00e9aliser un alignement polaire. Cette proc\u00e9dure consiste \u00e0 aligner finement la monture sur le nord g\u00e9ographique. L&rsquo;\u00e9toile polaire se trouve tr\u00e8s proche du nord, donc un centrage de la monture sur celle-ci est suffisant pour de l&rsquo;observation visuelle, pour la photographie, il faudra prendre en compte le petit d\u00e9calage entre l&rsquo;\u00e9toile polaire et le NCP, le p\u00f4le c\u00e9leste nord. G\u00e9n\u00e9ralement cette op\u00e9ration se fait avec un viseur polaire fix\u00e9 dans l&rsquo;axe de la monture mais il existe d&rsquo;autres mani\u00e8res de le faire.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"526\" height=\"473\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale.jpg\" alt=\"\" class=\"wp-image-12546\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale.jpg 526w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-300x270.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/monture-equatoriale-334x300.jpg 334w\" sizes=\"auto, (max-width: 526px) 100vw, 526px\" \/><figcaption class=\"wp-element-caption\">T\u00e9lescope sur une monture \u00e9quatoriale<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Une fois la monture mise en station, l&rsquo;appareil photo fix\u00e9 dessus, pensez \u00e0 \u00e9quilibrer votre setup en positionnant l&rsquo;appareil photo correctement et en pla\u00e7ant les contrepoids sur la monture. Un mauvais \u00e9quilibrage peut-\u00eatre la cause d&rsquo;un mauvais suivi.<\/p>\n\n\n\n<p>Lorsque vous aurez r\u00e9alis\u00e9 la mise au point sur une \u00e9toile, il ne restera plus qu&rsquo;\u00e0 orienter votre appareil vers la zone du ciel que vous d\u00e9sirez photographier et mettre en route la monture (il vous faudra une batterie ou des piles selon le mod\u00e8le).<\/p>\n\n\n\n<p>L\u00e0, comme pr\u00e9c\u00e9demment avec la photo sur un simple tr\u00e9pied, vous aller pouvoir lancer des poses longues, mais cette fois sans \u00eatre limit\u00e9 par la focale de votre objectif. Votre limite de temps sera fonction de la bonne mise en station de votre monture et de la qualit\u00e9 de celle-ci. Selon le mat\u00e9riel et votre savoir faire, vous pourrez r\u00e9aliser des poses unitaires de 30 secondes \u00e0 2 minutes.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-82.jpg\" alt=\"\" class=\"wp-image-12549\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-82.jpg 1024w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-82-300x200.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-82-768x512.jpg 768w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-82-450x300.jpg 450w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">M 82, Galaxie du Cigare, focale 400 mm, f\/d 9.5, 67 secondes de pose<\/figcaption><\/figure>\n\n\n\n<p>Mais tant qu&rsquo;\u00e0 faire, pourquoi ne pas r\u00e9aliser plusieurs photographies que vous allez pouvoir cumuler ? L\u2019int\u00e9r\u00eat d&rsquo;accumuler des images est d&rsquo;augmenter les d\u00e9tails et de r\u00e9duire le bruit pr\u00e9sent sur l&rsquo;image. Pour ce faire vous pouvez utiliser un intervallom\u00e8tre au lieu d&rsquo;appuyer sur le d\u00e9clencheur photo apr\u00e8s photo. Certains bo\u00eetiers photo sont dot\u00e9s d&rsquo;un intervallom\u00e8tre int\u00e9gr\u00e9.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"679\" height=\"739\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/intervalometre.jpg\" alt=\"\" class=\"wp-image-12508\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/intervalometre.jpg 679w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/intervalometre-276x300.jpg 276w\" sizes=\"auto, (max-width: 679px) 100vw, 679px\" \/><figcaption class=\"wp-element-caption\">Intervallom\u00e8tre<\/figcaption><\/figure>\n\n\n\n<p>Mais qu&rsquo;allez-vous faire avec toutes ces images ensuite ? Vous allez les empiler \u00e0 l&rsquo;aide d&rsquo;un logiciel comme <a href=\"https:\/\/siril.org\/fr\/\">Siril<\/a>, <a href=\"http:\/\/deepskystacker.free.fr\/french\/index.html\">DeepSkyStaker<\/a> ou <a href=\"https:\/\/sites.google.com\/view\/sequator\/download\">Sequator<\/a> pour ne citer que ceux qui sont gratuits. Pour ma part j&rsquo;utilise PixInsight qui est payant ou Siril, mais c&rsquo;est parce que je fais plus qu&#8217;empiler les images.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27.jpg\" alt=\"\" class=\"wp-image-12550\" srcset=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27.jpg 1024w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-300x200.jpg 300w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-768x512.jpg 768w, https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27-450x300.jpg 450w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">M 27, N\u00e9buleuse Dumbbell, 19 images de 30 secondes empil\u00e9es sous SIRIL, focale 2000 mm<\/figcaption><\/figure>\n\n\n\n<p>Ces deux photographies sont relativement affreuses, car je n&rsquo;ai utilis\u00e9 une monture \u00e9quatoriale avec un appareil photo qu&rsquo;\u00e0 mes touts d\u00e9buts et tr\u00e8s rapidement je suis pass\u00e9 \u00e0 du guidage et une cam\u00e9ra astro au lieu d&rsquo;un APN. Mais cela fera l&rsquo;objet d&rsquo;un prochain article.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous avons vu dans un pr\u00e9c\u00e9dent billet qu&rsquo;avec un simple tr\u00e9pied et un appareil photo, il \u00e9tait d\u00e9j\u00e0 possible de r\u00e9aliser des images du ciel. Mais nous avons vu \u00e9galement que le temps de pose \u00e9tait fortement contraint par la focale de l&rsquo;objectif utilis\u00e9 et la rotation de la terre. <a href=\"https:\/\/www.blog.neoprog.eu\/index.php\/2026\/05\/14\/photographier-les-etoiles-la-monture-equatoriale\/\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":12550,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[2810,7],"tags":[],"class_list":["post-12502","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-astro","category-photo","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Photographier les \u00e9toiles - la monture \u00e9quatoriale - Le Blog du N\u00e9oprog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.blog.neoprog.eu\/index.php\/2026\/05\/14\/photographier-les-etoiles-la-monture-equatoriale\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Photographier les \u00e9toiles - la monture \u00e9quatoriale - Le Blog du N\u00e9oprog\" \/>\n<meta property=\"og:description\" content=\"Nous avons vu dans un pr\u00e9c\u00e9dent billet qu&#039;avec un simple tr\u00e9pied et un appareil photo, il \u00e9tait d\u00e9j\u00e0 possible de r\u00e9aliser des images du ciel. Mais nous avons vu \u00e9galement que le temps de pose \u00e9tait fortement contraint par la focale de l&#039;objectif utilis\u00e9 et la rotation de la terre. Continuer la lecture &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.blog.neoprog.eu\/index.php\/2026\/05\/14\/photographier-les-etoiles-la-monture-equatoriale\/\" \/>\n<meta property=\"og:site_name\" content=\"Le Blog du N\u00e9oprog\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-14T06:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2026\/04\/M-27.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"682\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Neoprog\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Le_Brun_JC\" \/>\n<meta name=\"twitter:site\" content=\"@Le_Brun_JC\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Neoprog\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2026\\\/05\\\/14\\\/photographier-les-etoiles-la-monture-equatoriale\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2026\\\/05\\\/14\\\/photographier-les-etoiles-la-monture-equatoriale\\\/\"},\"author\":{\"name\":\"Neoprog\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#\\\/schema\\\/person\\\/47c594bf12736b172b772f0f02bcf511\"},\"headline\":\"Photographier les \u00e9toiles &#8211; 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