{"id":1295,"date":"2025-04-03T11:08:00","date_gmt":"2025-04-03T09:08:00","guid":{"rendered":"https:\/\/voyage-astrophoto.fr\/?p=1295"},"modified":"2026-04-02T15:36:01","modified_gmt":"2026-04-02T13:36:01","slug":"m101-avec-camera-monochrome-lrgb","status":"publish","type":"post","link":"https:\/\/voyage-astrophoto.fr\/index.php\/2025\/04\/03\/m101-avec-camera-monochrome-lrgb\/","title":{"rendered":"M101 avec cam\u00e9ra monochrome LRGB"},"content":{"rendered":"\n<p>La <a href=\"https:\/\/voyage-astrophoto.fr\/index.php\/2025\/03\/31\/changement-dere\/\" data-type=\"post\" data-id=\"1229\">veille<\/a> j&rsquo;ai pu installer, configurer et faire quelques images avec mon nouveau setup incluant la cam\u00e9ra monochrome + la roue \u00e0 filtres. Je peux donc faire une session compl\u00e8te sur la galaxie M101, avec les filtres de luminance (L), rouge (R), vert (V) et bleu (B), pour obtenir une image en couleur.<\/p>\n\n\n\n<p>Je configure une s\u00e9quence dans N.I.N.A qui alterne les prises de vues avec les filtres L,R,V et B. <\/p>\n\n\n\n<p>Je fais deux fois plus d&rsquo;image avec le filtre L, qui va donner les d\u00e9tails, qu&rsquo;avec les filtres de couleur.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"315\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/nina-1024x315.png\" alt=\"\" class=\"wp-image-1303\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/nina-1024x315.png 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/nina-300x92.png 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/nina-768x236.png 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/nina.png 1396w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">S\u00e9quence N.I.N.A avec les 4 filtres<\/figcaption><\/figure>\n<\/div>\n\n\n<p>La s\u00e9quence va se d\u00e9rouler correctement, et je vais me retrouver, pour la premi\u00e8re fois, avec 4 images monochromes \u00e0 combiner.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"580\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_L_92i-1024x580.png\" alt=\"\" class=\"wp-image-1306\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_L_92i-1024x580.png 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_L_92i-300x170.png 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_L_92i-768x435.png 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_L_92i.png 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Filtre L, 92 images empil\u00e9es<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"580\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_R_43i-1024x580.png\" alt=\"\" class=\"wp-image-1307\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_R_43i-1024x580.png 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_R_43i-300x170.png 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_R_43i-768x435.png 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_R_43i.png 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Filtre R, 43 images empil\u00e9es<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"580\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_G_44i-1024x580.png\" alt=\"\" class=\"wp-image-1308\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_G_44i-1024x580.png 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_G_44i-300x170.png 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_G_44i-768x435.png 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_G_44i.png 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Filtre V, 44 images empil\u00e9es<\/figcaption><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"580\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_B_45i-1024x580.png\" alt=\"\" class=\"wp-image-1309\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_B_45i-1024x580.png 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_B_45i-300x170.png 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_B_45i-768x435.png 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/M101_B_45i.png 1110w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Filtre B, 45 images empil\u00e9es<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Il me faut maintenant combiner ces 4 images, avec SIRIL. Je teste en faisant d&rsquo;abord l&rsquo;\u00e9tirement de chacun des 4 images avant la combinaison, puis l&rsquo;inverse : combinaison des 4 images, puis \u00e9tirement de l&rsquo;image finale.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"829\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/siril-composition-1024x829.jpg\" alt=\"\" class=\"wp-image-1312\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/siril-composition-1024x829.jpg 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/siril-composition-300x243.jpg 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/siril-composition-768x622.jpg 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/siril-composition.jpg 1122w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Fonctionnalit\u00e9 de composition multi-canaux de SIRIL<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Mais je trouve le r\u00e9sultat d\u00e9cevant, quelque soit la mani\u00e8re de faire \ud83d\ude41<\/p>\n\n\n\n<p>Trop bruit\u00e9, pas assez de d\u00e9tails, peu de piqu\u00e9&#8230;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"570\" src=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample-web-1024x570.jpg\" alt=\"\" class=\"wp-image-1315\" srcset=\"https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample-web-1024x570.jpg 1024w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample-web-300x167.jpg 300w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample-web-768x427.jpg 768w, https:\/\/voyage-astrophoto.fr\/wp-content\/uploads\/2025\/04\/r_d_M101_LRGB_GHS_CC-8.0-0.5-0.6-0.55-full_PS2-resample-web.jpg 1364w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">Galaxie M101<br>92 images de 2 min en L, soit 3h de pose<br>43 images de 2 min en R, soit 1.4h de pose<br>44 images de 2 min en V, soit 1.5h de pose<br>45 images de 2 min en B, soit 1.5h de pose<br>Soit 7.4h de temps total d\u2019int\u00e9gration<\/figcaption><\/figure>\n<\/div>\n\n\n<p>En <a href=\"https:\/\/voyage-astrophoto.fr\/index.php\/comparaison-m101-camera-monochrome-vs-apn\/\">comparant <\/a>avec la photo de cette m\u00eame galaxie, que j&rsquo;avais prise avec mon APN Canon le 19\/04\/2024, je me rends bien compte des lacunes de ma premi\u00e8re utilisation de la cam\u00e9ra monochrome.<\/p>\n\n\n<div class=\"align wp-block-icb-image-compare\" id='icbImageCompare-1' data-attributes='{&quot;beforeImg&quot;:{&quot;id&quot;:1327,&quot;url&quot;:&quot;https:\\\/\\\/voyage-astrophoto.fr\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/M101_comp_00002-web.jpg&quot;,&quot;alt&quot;:&quot;&quot;,&quot;title&quot;:&quot;M101_comp_00002-web&quot;},&quot;afterImg&quot;:{&quot;id&quot;:1326,&quot;url&quot;:&quot;https:\\\/\\\/voyage-astrophoto.fr\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/M101_comp_00001-web.jpg&quot;,&quot;alt&quot;:&quot;&quot;,&quot;title&quot;:&quot;M101_comp_00001-web&quot;},&quot;beforeLabel&quot;:&quot;M101 avec cam\\u00e9ra monochrome&lt;br&gt;7.4h d&#039;int\\u00e9gration&quot;,&quot;afterLabel&quot;:&quot;M101 avec APN&lt;br&gt;5.7h de temps de pose&quot;,&quot;cap&quot;:&quot;Comparaison de M101&quot;,&quot;align&quot;:&quot;&quot;,&quot;alignment&quot;:&quot;center&quot;,&quot;theme&quot;:&quot;default&quot;,&quot;width&quot;:&quot;80%&quot;,&quot;border&quot;:[],&quot;orientation&quot;:&quot;horizontal&quot;,&quot;isSwap&quot;:false,&quot;isLabel&quot;:true,&quot;label&quot;:{&quot;hAlign&quot;:&quot;bottom&quot;,&quot;vAlign&quot;:&quot;center&quot;,&quot;isShowHover&quot;:false},&quot;labelTypo&quot;:{&quot;fontSize&quot;:{&quot;desktop&quot;:15,&quot;tablet&quot;:15,&quot;mobile&quot;:15}},&quot;labelColors&quot;:{&quot;color&quot;:&quot;#fff&quot;,&quot;bg&quot;:&quot;#00000080&quot;},&quot;labelPadding&quot;:{&quot;vertical&quot;:&quot;10px&quot;,&quot;horizontal&quot;:&quot;15px&quot;},&quot;isCap&quot;:true,&quot;capAlign&quot;:&quot;center&quot;,&quot;capTypo&quot;:{&quot;fontSize&quot;:{&quot;desktop&quot;:14,&quot;tablet&quot;:14,&quot;mobile&quot;:14}},&quot;capColors&quot;:{&quot;color&quot;:&quot;#333&quot;,&quot;bg&quot;:&quot;#f4f4f4&quot;},&quot;capPadding&quot;:{&quot;vertical&quot;:&quot;10px&quot;,&quot;horizontal&quot;:&quot;15px&quot;},&quot;dragg&quot;:{&quot;handleType&quot;:&quot;default&quot;,&quot;shapeType&quot;:&quot;default&quot;},&quot;styles&quot;:{&quot;container&quot;:{&quot;height&quot;:{&quot;desktop&quot;:&quot;&quot;,&quot;tablet&quot;:&quot;&quot;,&quot;mobile&quot;:&quot;&quot;}},&quot;dragg&quot;:{&quot;line&quot;:{&quot;bg&quot;:{&quot;color&quot;:&quot;#fff&quot;},&quot;size&quot;:2},&quot;icon&quot;:{&quot;color&quot;:&quot;&quot;},&quot;handler&quot;:{&quot;color&quot;:&quot;&quot;}}},&quot;options&quot;:{&quot;defaultOffset&quot;:0.5,&quot;moveMouseOver&quot;:false,&quot;isMoveClick&quot;:false,&quot;autoSlide&quot;:{&quot;isAutoSlide&quot;:false,&quot;speed&quot;:5,&quot;isHoverStop&quot;:true}},&quot;sliderOptions&quot;:{&quot;arrowType&quot;:&quot;style1&quot;,&quot;height&quot;:{&quot;desktop&quot;:&quot;400px&quot;,&quot;tablet&quot;:&quot;400px&quot;,&quot;mobile&quot;:&quot;400px&quot;},&quot;autoplay&quot;:true,&quot;dots&quot;:false,&quot;speed&quot;:500,&quot;autoplaySpeed&quot;:2500,&quot;pauseOnHover&quot;:true,&quot;infinite&quot;:true,&quot;arrows&quot;:true,&quot;slidesView&quot;:{&quot;desktop&quot;:1,&quot;tablet&quot;:1,&quot;mobile&quot;:1}},&quot;sliderStyle&quot;:{&quot;pagination&quot;:{&quot;active&quot;:&quot;#4527a4&quot;},&quot;navigation&quot;:{&quot;icon&quot;:{&quot;normal&quot;:{&quot;color&quot;:&quot;#000&quot;,&quot;size&quot;:&quot;22px&quot;},&quot;hover&quot;:{&quot;color&quot;:&quot;&quot;,&quot;size&quot;:&quot;22px&quot;}},&quot;container&quot;:{&quot;height&quot;:&quot;&quot;,&quot;width&quot;:&quot;&quot;,&quot;normal&quot;:{&quot;bg&quot;:{&quot;color&quot;:&quot;#fff&quot;},&quot;border&quot;:[],&quot;radius&quot;:{&quot;left&quot;:&quot;30px&quot;,&quot;right&quot;:&quot;30px&quot;,&quot;top&quot;:&quot;30px&quot;,&quot;bottom&quot;:&quot;30px&quot;}},&quot;hover&quot;:{&quot;bg&quot;:{&quot;color&quot;:&quot;#fff&quot;},&quot;border&quot;:[],&quot;radius&quot;:[]}}}},&quot;slider&quot;:[{&quot;beforeImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg.jpg&quot;},&quot;beforeLabel&quot;:&quot;Before Label&quot;},&quot;afterImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg2.jpg&quot;},&quot;afterLabel&quot;:&quot;After Label&quot;},&quot;caption&quot;:&quot;Before After Image Caption&quot;},{&quot;beforeImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg.jpg&quot;},&quot;beforeLabel&quot;:&quot;Before Label&quot;},&quot;afterImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg2.jpg&quot;},&quot;afterLabel&quot;:&quot;After Label&quot;},&quot;caption&quot;:&quot;Before After Image Caption&quot;},{&quot;beforeImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg.jpg&quot;},&quot;beforeLabel&quot;:&quot;Before Label&quot;},&quot;afterImg&quot;:{&quot;img&quot;:{&quot;url&quot;:&quot;https:\\\/\\\/templates.bplugins.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/beafImg2.jpg&quot;},&quot;afterLabel&quot;:&quot;After Label&quot;},&quot;caption&quot;:&quot;Before After Image Caption&quot;}]}' data-icbchecker='false'><\/div>\n\n\n<p>La comparaison n&rsquo;est pas facile puisque j&rsquo;ai finalement deux fois moins de temps de pose globale sur mon image LRVB que sur celle avec l&rsquo;APN (3h avec le filtre L en monochrome, contre 5.7h avec l&rsquo;APN), mais je ne m&rsquo;attendais pas \u00e0 autant de diff\u00e9rences&#8230;<\/p>\n\n\n\n<p>Je reste sur un sentiment mitig\u00e9, il va falloir que je comprenne ce qui ne va pas dans ma fa\u00e7on de traiter les images monochrome. Ou dans ma fa\u00e7on de configurer les prises de vue ? \ud83e\udd14<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La veille j&rsquo;ai pu installer, configurer et faire quelques images avec mon nouveau setup incluant la cam\u00e9ra monochrome + la roue \u00e0 filtres. Je peux donc faire une session compl\u00e8te sur la galaxie M101, avec les filtres de luminance (L), rouge (R), vert (V) et bleu (B), pour obtenir une image en couleur. Je configure [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1315,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[57,25],"class_list":["post-1295","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-session-dobservation","tag-lrgb","tag-m101"],"_links":{"self":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/posts\/1295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1295"}],"version-history":[{"count":18,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/posts\/1295\/revisions"}],"predecessor-version":[{"id":1347,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/posts\/1295\/revisions\/1347"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/media\/1315"}],"wp:attachment":[{"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/voyage-astrophoto.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}