{"id":7193,"date":"2018-06-10T12:38:05","date_gmt":"2018-06-10T11:38:05","guid":{"rendered":"http:\/\/outters.fr\/?p=7193"},"modified":"2025-07-15T17:04:09","modified_gmt":"2025-07-15T16:04:09","slug":"m8-hsiioo-rgb","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=7193","title":{"rendered":"M8-HSIIOO-rgb (Ciel Austral)"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-background-position:left top;--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:20px;--awb-padding-bottom:20px;--awb-border-sizes-top:0px;--awb-border-sizes-bottom:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1800px + 0px );margin-left: calc(-0px \/ 2 );margin-right: calc(-0px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column fusion-flex-align-self-flex-start fusion-column-no-min-height\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:0px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:0px;--awb-width-medium:100%;--awb-spacing-right-medium:0px;--awb-spacing-left-medium:0px;--awb-width-small:100%;--awb-spacing-right-small:0px;--awb-spacing-left-small:0px;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-title-center fusion-title-text fusion-title-size-two\" style=\"--awb-sep-color:#dd9933;\"><div class=\"title-sep-container title-sep-container-left\"><div class=\"title-sep sep- sep-solid\" style=\"border-color:#dd9933;\"><\/div><\/div><span class=\"awb-title-spacer\"><\/span><h2 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:24;line-height:;\"><p style=\"text-align: left;\"><span style=\"color: #ff9900;\">M8-HSIIOO-rgb (Ciel Austral)<br \/>\n<\/span><\/p><\/h2><span class=\"awb-title-spacer\"><\/span><div class=\"title-sep-container title-sep-container-right\"><div class=\"title-sep sep- sep-solid\" style=\"border-color:#dd9933;\"><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container hundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-overflow:visible;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-position:center center;--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"text-align:center;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><a class=\"fusion-no-lightbox\" href=\"http:\/\/outters.fr\/wp-content\/uploads\/2018\/06\/M8-HSII-OOv7.jpg\" target=\"_blank\" aria-label=\"M8-HSII-OOv7\" rel=\"noopener noreferrer\"><img decoding=\"async\" width=\"900\" height=\"887\" src=\"http:\/\/outters.fr\/wp-content\/uploads\/2018\/06\/M8-HSII-OOv7-900x887.jpg\" alt class=\"img-responsive wp-image-7123\" 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style=\"border-color:#dd9933;\"><\/div><\/div><span class=\"awb-title-spacer\"><\/span><h2 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:24;line-height:;\"><p style=\"text-align: left;\"><span style=\"color: #ff9900;\">Donn\u00e9es techniques<br \/>\n<\/span><\/p><\/h2><span class=\"awb-title-spacer\"><\/span><div class=\"title-sep-container title-sep-container-right\"><div class=\"title-sep sep- sep-solid\" style=\"border-color:#dd9933;\"><\/div><\/div><\/div><div class=\"fusion-content-boxes content-boxes columns row fusion-columns-1 fusion-columns-total-1 fusion-content-boxes-1 content-boxes-clean-horizontal content-left content-boxes-icon-on-side\" style=\"--awb-title-color:#dd9933;--awb-hover-accent-color:var(--awb-custom_color_4);--awb-circle-hover-accent-color:var(--awb-custom_color_4);--awb-item-margin-bottom:40px;\" data-animationOffset=\"top-into-view\"><div style=\"--awb-backgroundcolor:transparent;--awb-content-padding-left:46px;border-color:rgba(255,255,255,0);\" class=\"fusion-column content-box-column content-box-column content-box-column-1 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><div class=\"heading heading-with-icon icon-left\"><div class=\"icon\"><i style=\"border-color:#3e3e3e;border-width:1px;background-color:#3e3e3e;box-sizing:content-box;height:24px;width:24px;line-height:24px;border-radius:50%;font-size:12px;\" aria-hidden=\"true\" class=\"fontawesome-icon fa fa-joomla circle-yes\"><\/i><\/div><h2 class=\"content-box-heading fusion-responsive-typography-calculated\" style=\"--h2_typography-font-size:18px;--fontSize:18;line-height:;padding-left:46px;\">Donn\u00e9es scientifiques<\/h2><\/div><div class=\"fusion-clearfix\"><\/div><div class=\"content-container\">\n<h1 lang=\"fr\">Source WIKIPEDIA<\/h1>\n<h1 id=\"firstHeading\" class=\"firstHeading\" lang=\"fr\">N\u00e9buleuse de la Lagune<\/h1>\n<div id=\"bodyContent\" class=\"mw-body-content\">\n<div id=\"contentSub\"><\/div>\n<\/div>\n<p><a class=\"mw-jump-link\" href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#mw-head\">Sauter \u00e0 la navigation<\/a> <a class=\"mw-jump-link\" href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#p-search\">Sauter \u00e0 la recherche<\/a><\/p>\n<div id=\"mw-content-text\" class=\"mw-content-ltr\" dir=\"ltr\" lang=\"fr\">\n<div class=\"mw-parser-output\">\n<div class=\"homonymie\"><a title=\"Aide:Homonymie\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Aide:Homonymie\"><img decoding=\"async\" class=\"noviewer\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/3e\/Disambig_colour.svg\/20px-Disambig_colour.svg.png\" srcset=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/3e\/Disambig_colour.svg\/30px-Disambig_colour.svg.png 1.5x, \/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/3e\/Disambig_colour.svg\/40px-Disambig_colour.svg.png 2x\" alt=\"Page d'aide sur l'homonymie\" width=\"20\" height=\"15\" data-file-width=\"272\" data-file-height=\"200\" \/><\/a> Pour les articles homonymes, voir <a class=\"mw-disambig\" title=\"M8\" href=\"https:\/\/fr.wikipedia.org\/wiki\/M8\">M8<\/a>.<\/div>\n<table class=\"infobox_v2\">\n<tbody>\n<tr>\n<td class=\"entete defaut\" colspan=\"2\">N\u00e9buleuse de la Lagune<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><a class=\"image\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Lagoon_Nebula_%28ESO%29.jpg?uselang=fr\"><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/16\/Lagoon_Nebula_%28ESO%29.jpg\/280px-Lagoon_Nebula_%28ESO%29.jpg\" srcset=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/16\/Lagoon_Nebula_%28ESO%29.jpg\/420px-Lagoon_Nebula_%28ESO%29.jpg 1.5x, \/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/16\/Lagoon_Nebula_%28ESO%29.jpg\/560px-Lagoon_Nebula_%28ESO%29.jpg 2x\" alt=\"image illustrative de l\u2019article N\u00e9buleuse de la Lagune\" width=\"280\" height=\"188\" data-file-width=\"7856\" data-file-height=\"5261\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Donn\u00e9es d\u2019observation<br \/>\n<small>(<a title=\"\u00c9poque (astronomie)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/%C3%89poque_%28astronomie%29\">\u00c9poque<\/a> <a title=\"J2000.0\" href=\"https:\/\/fr.wikipedia.org\/wiki\/J2000.0\">J2000.0<\/a>)<\/small><\/th>\n<\/tr>\n<tr>\n<th scope=\"row\"><a title=\"Constellation\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Constellation\">Constellation<\/a><\/th>\n<td><a title=\"Sagittaire (constellation)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Sagittaire_%28constellation%29\">Sagittaire<\/a><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><a title=\"Ascension droite\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Ascension_droite\">Ascension droite<\/a> (\u03b1)<\/th>\n<td>18<sup>h<\/sup>\u00a003<sup>m<\/sup>\u00a041,26<sup>s<\/sup><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><a title=\"D\u00e9clinaison (astronomie)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/D%C3%A9clinaison_%28astronomie%29\">D\u00e9clinaison<\/a> (\u03b4)<\/th>\n<td>\u221224\u00b0\u00a022\u2032\u00a048,6\u2033<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Distance<\/th>\n<td>\u223c5\u00a0200\u00a0<abbr class=\"abbr\" title=\"ann\u00e9e-lumi\u00e8re\"><a title=\"Ann\u00e9e-lumi\u00e8re\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Ann%C3%A9e-lumi%C3%A8re\">a.l.<\/a><\/abbr> (\u223c1\u00a0590\u00a0<abbr class=\"abbr\" title=\"parsec\"><a title=\"Parsec\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Parsec\">pc<\/a><\/abbr>)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\"><a title=\"Magnitude apparente\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Magnitude_apparente\">Magnitude apparente<\/a> <small>(V)<\/small><\/th>\n<td>+6,0<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Dimensions apparentes <small>(V)<\/small><\/th>\n<td>90\u00a0\u00d7\u00a040\u00a0<abbr class=\"abbr\" title=\"minutes d'arc\"><a class=\"mw-redirect\" title=\"Minute d'arc\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Minute_d%27arc\">minutes d&rsquo;arc<\/a><\/abbr><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">\n<div id=\"img_toogle_0\" class=\"img_toogle\">\n<div id=\"geobox_0_0\" class=\"geobox\">\n<p><small>Localisation dans la constellation\u00a0: <a title=\"Sagittaire (constellation)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Sagittaire_%28constellation%29\">Sagittaire<\/a><\/small><\/p>\n<div>\n<div><a class=\"image\" title=\"(Voir situation dans la constellation\u00a0: Sagittaire)\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Cercle_rouge_100%25.svg?uselang=fr\"><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/4a\/Cercle_rouge_100%25.svg\/15px-Cercle_rouge_100%25.svg.png\" srcset=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/4a\/Cercle_rouge_100%25.svg\/23px-Cercle_rouge_100%25.svg.png 1.5x, \/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/4a\/Cercle_rouge_100%25.svg\/30px-Cercle_rouge_100%25.svg.png 2x\" alt=\"(Voir situation dans la constellation\u00a0: Sagittaire)\" width=\"15\" height=\"15\" data-file-width=\"200\" data-file-height=\"200\" \/><\/a><\/div>\n<p><a class=\"image\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Sagittarius_IAU.svg?uselang=fr\"><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/5\/54\/Sagittarius_IAU.svg\/280px-Sagittarius_IAU.svg.png\" srcset=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/5\/54\/Sagittarius_IAU.svg\/420px-Sagittarius_IAU.svg.png 1.5x, \/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/5\/54\/Sagittarius_IAU.svg\/560px-Sagittarius_IAU.svg.png 2x\" alt=\"Sagittarius IAU.svg\" width=\"280\" height=\"345\" data-file-width=\"605\" data-file-height=\"745\" \/><\/a><\/p>\n<\/div>\n<\/div>\n<ul id=\"geoboxToggleLinks_0\"><\/ul>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">Type d&rsquo;objet<\/th>\n<td><a title=\"N\u00e9buleuse en \u00e9mission\" href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_en_%C3%A9mission\">N\u00e9buleuse en \u00e9mission<\/a><\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\">D\u00e9couverte<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">D\u00e9couvreur(s)<\/th>\n<td><a title=\"Guillaume Le Gentil\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Guillaume_Le_Gentil\">Guillaume Le Gentil<\/a><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Date<\/th>\n<td><a title=\"1747\" href=\"https:\/\/fr.wikipedia.org\/wiki\/1747\">1747<\/a><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">D\u00e9signation(s)<\/th>\n<td>M8, NGC 6523<\/td>\n<\/tr>\n<tr>\n<th colspan=\"2\"><a title=\"Cat\u00e9gorie:N\u00e9buleuse en \u00e9mission\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Cat%C3%A9gorie:N%C3%A9buleuse_en_%C3%A9mission\">Liste des n\u00e9buleuses en \u00e9mission<\/a><\/th>\n<\/tr>\n<tr>\n<td class=\"navigation-only\" colspan=\"2\"><span class=\"plainlinks\"><a class=\"external text\" href=\"https:\/\/fr.wikipedia.org\/w\/index.php?title=N%C3%A9buleuse_de_la_Lagune&amp;action=edit&amp;section=0\">modifier<\/a><\/span>\u00a0<a title=\"Consultez la documentation du mod\u00e8le\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Mod%C3%A8le:Infobox_Objet_astronomique\"><img decoding=\"async\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/38\/Info_Simple.svg\/12px-Info_Simple.svg.png\" srcset=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/38\/Info_Simple.svg\/18px-Info_Simple.svg.png 1.5x, \/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/38\/Info_Simple.svg\/24px-Info_Simple.svg.png 2x\" alt=\"Consultez la documentation du mod\u00e8le\" width=\"12\" height=\"12\" data-file-width=\"512\" data-file-height=\"512\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>M8<\/b> ou <b>NGC 6523<\/b> ou la <b>n\u00e9buleuse de la Lagune<\/b> est une <a title=\"N\u00e9buleuse\" href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse\">n\u00e9buleuse<\/a> diffuse situ\u00e9e dans le <a title=\"Sagittaire (constellation)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Sagittaire_%28constellation%29\">Sagittaire<\/a> visible \u00e0 l&rsquo;\u0153il nu sous de bonnes conditions.<\/p>\n<div id=\"toc\" class=\"toc\">\n<div class=\"toctitle\" dir=\"ltr\" lang=\"fr\">\n<h2>Sommaire<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"toc\" class=\"toc\">\n<ul>\n<li class=\"toclevel-1 tocsection-1\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Histoire\"><span class=\"tocnumber\">1<\/span> <span class=\"toctext\">Histoire<\/span><\/a><\/li>\n<li class=\"toclevel-1 tocsection-2\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Caract%C3%A9ristiques\"><span class=\"tocnumber\">2<\/span> <span class=\"toctext\">Caract\u00e9ristiques<\/span><\/a><\/li>\n<li class=\"toclevel-1 tocsection-3\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Observation\"><span class=\"tocnumber\">3<\/span> <span class=\"toctext\">Observation<\/span><\/a><\/li>\n<li class=\"toclevel-1 tocsection-4\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Images\"><span class=\"tocnumber\">4<\/span> <span class=\"toctext\">Images<\/span><\/a><\/li>\n<li class=\"toclevel-1 tocsection-5\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Notes_et_r%C3%A9f%C3%A9rences\"><span class=\"tocnumber\">5<\/span> <span class=\"toctext\">Notes et r\u00e9f\u00e9rences<\/span><\/a><\/li>\n<li class=\"toclevel-1 tocsection-6\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Voir_aussi\"><span class=\"tocnumber\">6<\/span> <span class=\"toctext\">Voir aussi<\/span><\/a>\n<ul>\n<li class=\"toclevel-2 tocsection-7\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Article_connexe\"><span class=\"tocnumber\">6.1<\/span> <span class=\"toctext\">Article connexe<\/span><\/a><\/li>\n<li class=\"toclevel-2 tocsection-8\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#Liens_externes\"><span class=\"tocnumber\">6.2<\/span> <span class=\"toctext\">Liens externes<\/span><\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<h2><span id=\"Histoire\" class=\"mw-headline\">Histoire<\/span><\/h2>\n<p>La n\u00e9buleuse a \u00e9t\u00e9 d\u00e9couverte par <a title=\"Giovanni Battista Hodierna\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Giovanni_Battista_Hodierna\">Giovanni Battista Hodierna<\/a><sup id=\"cite_ref-1\" class=\"reference\"><a href=\"https:\/\/fr.wikipedia.org\/wiki\/N%C3%A9buleuse_de_la_Lagune#cite_note-1\">1<\/a><\/sup> et redecouverte en 1747 par <a title=\"Guillaume Le Gentil\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Guillaume_Le_Gentil\">Guillaume Le Gentil<\/a> qui l&rsquo;int\u00e9gra dans le catalogue de Messier. John Herschel d\u00e9couvrit que la r\u00e9gion la plus brillante de la n\u00e9buleuse avait une forme de sablier. Cette r\u00e9gion a \u00e9t\u00e9 observ\u00e9e par le <a title=\"Hubble (t\u00e9lescope spatial)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Hubble_%28t%C3%A9lescope_spatial%29\">t\u00e9lescope Hubble<\/a> en 1997, celle-ci \u00e9tant consid\u00e9r\u00e9e comme le lieu de la formation d&rsquo;\u00e9toiles. En 1890, <a class=\"mw-redirect\" title=\"Agn\u00e8s Clerke\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Agn%C3%A8s_Clerke\">Agn\u00e8s Clerke<\/a> lui donna son nom de \u00ab\u00a0n\u00e9buleuse de la lagune\u00a0\u00bb.<\/p>\n<h2><span id=\"Caract.C3.A9ristiques\"><\/span><span id=\"Caract\u00e9ristiques\" class=\"mw-headline\">Caract\u00e9ristiques<\/span><\/h2>\n<p>La n\u00e9buleuse de la lagune est un immense nuage d&rsquo;<a title=\"Hydrog\u00e8ne\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Hydrog%C3%A8ne\">hydrog\u00e8ne<\/a> et de poussi\u00e8res \u00e9clair\u00e9 par une superg\u00e9ante bleue, l&rsquo;\u00e9toile 9 du <a title=\"Sagittaire (constellation)\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Sagittaire_%28constellation%29\">Sagittaire<\/a>. La taille de la n\u00e9buleuse est d&rsquo;environ 110 <a title=\"Ann\u00e9e-lumi\u00e8re\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Ann%C3%A9e-lumi%C3%A8re\">ann\u00e9es-lumi\u00e8re<\/a> et sa distance tourne autour de 5\u00a0000\u00a0ann\u00e9es lumi\u00e8re ce qui lui donne un <a class=\"mw-redirect\" title=\"Diam\u00e8tre apparent\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Diam%C3%A8tre_apparent\">diam\u00e8tre apparent<\/a> trois fois plus important que celui de la pleine <a title=\"Lune\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Lune\">Lune<\/a>. La n\u00e9buleuse, comme de nombreuses n\u00e9buleuses diffuses, contient un bel amas ouvert, <a class=\"new\" title=\"NGC 6530 (page inexistante)\" href=\"https:\/\/fr.wikipedia.org\/w\/index.php?title=NGC_6530&amp;action=edit&amp;redlink=1\">NGC 6530<\/a>, issu de la n\u00e9buleuse, d&rsquo;\u00e9toiles jeunes et tr\u00e8s chaudes de <a title=\"Type spectral\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Type_spectral\">type O et B<\/a> \u00e2g\u00e9es de seulement <span class=\"nowrap\">2 millions<\/span> d&rsquo;ann\u00e9es. La r\u00e9gion du sablier, \u00e9clair\u00e9e par l&rsquo;\u00e9toile Herschel 36, est suspect\u00e9e d&rsquo;\u00eatre le lieu de naissance d&rsquo;\u00e9toiles.<\/p>\n<h2><span id=\"Observation\" class=\"mw-headline\">Observation<\/span><\/h2>\n<p>Du fait de sa <a title=\"Magnitude apparente\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Magnitude_apparente\">magnitude<\/a> 5, la n\u00e9buleuse est visible \u00e0 l&rsquo;\u0153il nu. La taille apparente tr\u00e8s importante de l&rsquo;objet impose de faire attention au grossissement employ\u00e9 pour l&rsquo;observer. Si vous avez un <a title=\"T\u00e9lescope\" href=\"https:\/\/fr.wikipedia.org\/wiki\/T%C3%A9lescope\">t\u00e9lescope<\/a> ou une <a title=\"Lunette astronomique\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Lunette_astronomique\">lunette astronomique<\/a> utilisez l&rsquo;<a title=\"Oculaire\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Oculaire\">oculaire<\/a> ayant la distance focale la plus importante (20\u00a0<abbr class=\"abbr\" title=\"millim\u00e8tre\">mm<\/abbr> par exemple). L&rsquo;utilisation d&rsquo;un filtre UHC, tr\u00e8s efficace pour ce type de n\u00e9buleuse, vous permettra sans doute d&rsquo;observer la n\u00e9buleuse avec plus de d\u00e9tails.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_2 1_2 fusion-flex-column fusion-animated\" style=\"--awb-bg-size:cover;--awb-border-color:#000000;--awb-border-top:0px;--awb-border-right:0px;--awb-border-bottom:0px;--awb-border-left:0px;--awb-border-style:solid;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-animationType=\"zoomInDown\" data-animationDuration=\"0.1\" data-animationOffset=\"top-into-view\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" width=\"400\" height=\"279\" title=\"M8-datas\" src=\"http:\/\/outters.fr\/wp-content\/uploads\/2018\/06\/M8-datas-400x279.jpg\" alt class=\"img-responsive wp-image-7189\" srcset=\"https:\/\/www.outters.fr\/wp-content\/uploads\/2018\/06\/M8-datas-200x139.jpg 200w, https:\/\/www.outters.fr\/wp-content\/uploads\/2018\/06\/M8-datas-400x279.jpg 400w, https:\/\/www.outters.fr\/wp-content\/uploads\/2018\/06\/M8-datas-600x418.jpg 600w, https:\/\/www.outters.fr\/wp-content\/uploads\/2018\/06\/M8-datas.jpg 790w\" sizes=\"(max-width: 464px) 100vw, 400px\" \/><\/span><\/div><div class=\"fusion-content-boxes content-boxes columns row fusion-columns-1 fusion-columns-total-1 fusion-content-boxes-2 content-boxes-icon-with-title content-left\" style=\"--awb-hover-accent-color:var(--awb-custom_color_4);--awb-circle-hover-accent-color:var(--awb-custom_color_4);--awb-item-margin-bottom:40px;\" data-animationOffset=\"top-into-view\"><div style=\"--awb-backgroundcolor:transparent;\" class=\"fusion-column content-box-column content-box-column content-box-column-1 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><div class=\"heading icon-left\"><h2 class=\"content-box-heading fusion-responsive-typography-calculated\" style=\"--h2_typography-font-size:18px;--fontSize:18;line-height:;\">Commentaires sur l'objet<\/h2><\/div><div class=\"fusion-clearfix\"><\/div><div class=\"content-container\">\n<p>M8 est un objet qui a beaucoup de signal avec les 3 filtres employ\u00e9s. Il a fallu composer une image HDR pour \u00e9viter que le centre de la lagune ne soit satur\u00e9e.<\/p>\n<p>La couche SII a beaucoup servi pour composer le centre de la lagune.<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff9900;\"><img decoding=\"async\" class=\"size-thumbnail wp-image-2169 alignleft\" src=\"http:\/\/outters.fr\/wp-content\/uploads\/2016\/06\/photo_4fbb66c9889963.16051140_portrait_nicolas_outters-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.outters.fr\/wp-content\/uploads\/2016\/06\/photo_4fbb66c9889963.16051140_portrait_nicolas_outters-66x66.jpg 66w, https:\/\/www.outters.fr\/wp-content\/uploads\/2016\/06\/photo_4fbb66c9889963.16051140_portrait_nicolas_outters-150x150.jpg 150w, https:\/\/www.outters.fr\/wp-content\/uploads\/2016\/06\/photo_4fbb66c9889963.16051140_portrait_nicolas_outters.jpg 765w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/span><\/p>\n<\/div><\/div><\/div><div class=\"fusion-clearfix\"><\/div><\/div><div class=\"fusion-content-boxes content-boxes columns row fusion-columns-1 fusion-columns-total-4 fusion-content-boxes-3 content-boxes-clean-horizontal content-left content-boxes-icon-on-side\" style=\"--awb-title-color:#dd9933;--awb-hover-accent-color:var(--awb-custom_color_4);--awb-circle-hover-accent-color:var(--awb-custom_color_4);--awb-item-margin-bottom:40px;\" data-animationOffset=\"top-into-view\"><div style=\"--awb-backgroundcolor:transparent;--awb-content-padding-left:46px;border-color:rgba(255,255,255,0);\" class=\"fusion-column content-box-column content-box-column content-box-column-1 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon link-type-text icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><div class=\"heading heading-with-icon icon-left\"><a class=\"heading-link\" href=\"http:\/\/outters.fr\/wp-content\/uploads\/2018\/06\/M8-HSII-OOv7.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><div class=\"icon\"><i style=\"border-color:#3e3e3e;border-width:1px;background-color:#3e3e3e;box-sizing:content-box;height:24px;width:24px;line-height:24px;border-radius:50%;font-size:12px;\" aria-hidden=\"true\" class=\"fontawesome-icon fa fa-camera circle-yes\"><\/i><\/div><h2 class=\"content-box-heading fusion-responsive-typography-calculated\" style=\"--h2_typography-font-size:18px;--fontSize:18;line-height:;padding-left:46px;\">Image HOO-rgb<\/h2><\/a><\/div><\/div><\/div><div style=\"--awb-backgroundcolor:transparent;border-color:rgba(255,255,255,0);\" class=\"fusion-column content-box-column content-box-column content-box-column-2 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><\/div><\/div><div style=\"--awb-backgroundcolor:transparent;border-color:rgba(255,255,255,0);\" class=\"fusion-column content-box-column content-box-column content-box-column-3 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><\/div><\/div><div style=\"--awb-backgroundcolor:transparent;border-color:rgba(255,255,255,0);\" class=\"fusion-column content-box-column content-box-column content-box-column-4 col-lg-12 col-md-12 col-sm-12 fusion-content-box-hover content-box-column-last content-box-column-last-in-row\"><div class=\"col content-box-wrapper content-wrapper link-area-link-icon icon-hover-animation-fade\" data-animationOffset=\"top-into-view\"><\/div><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":7122,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[102,111,122,129,152,249,336],"tags":[338,342,343],"class_list":["post-7193","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-nebuleuse","category-messier","category-haoiii-rvb","category-observatoire-chili","category-toutes-categories","category-lunette-tec160","category-saison-2018","tag-cielaustral","tag-m8","tag-laguna-nebulae","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/7193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7193"}],"version-history":[{"count":4,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/7193\/revisions"}],"predecessor-version":[{"id":7305,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/7193\/revisions\/7305"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/media\/7122"}],"wp:attachment":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}