{"id":9974,"date":"2018-04-22T16:10:59","date_gmt":"2018-04-22T16:10:59","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/la-galaxie-ngc3495-lamas-coma-abel-1656\/"},"modified":"2025-06-08T22:45:27","modified_gmt":"2025-06-08T20:45:27","slug":"la-galaxie-ngc3495-lamas-coma-abel-1656","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/la-galaxie-ngc3495-lamas-coma-abel-1656\/","title":{"rendered":"La galaxie NGC3495, l&rsquo;amas Coma (Abel 1656)"},"content":{"rendered":"<p>Bonjour,<br \/>\nJ&rsquo;ai pu profiter de cette belle semaine pass\u00e9e sous le soleil de La Fosse pour imager la galaxie NGC3495 en couleurs. Le seeing \u00e9tait assez exceptionnel, en tout cas les nuits du lundi 16 et du mardi 17, moins par la suite. Lorsque cet objet s&rsquo;est retrouv\u00e9 trop \u00e0 l&rsquo;ouest et qu&rsquo;il n&rsquo;as plus \u00e9t\u00e9 possible de le suivre, j&rsquo;ai tourn\u00e9 le t\u00e9lescope vers l&rsquo;amas de galaxie Abel 1656. Au final, trois nuits de captures retenues pour ces deux champs qui sont pr\u00e9sent\u00e9s \u00e0 70% de la taille d&rsquo;acquisition pour le site.<\/p>\n<p>NGC3495 a \u00e9t\u00e9 captur\u00e9e en LRVB du 16 au 18 avril avec la CCD ST10XME plac\u00e9e au foyer r\u00e9duit du C11. Le temps de pose total est de 4 heures 05. L&rsquo;\u00e9toile brillante visible en haut du champ est 58 Leo et sa proximit\u00e9 n&rsquo;est qu&rsquo;apparente puisque la galaxie spirale NGC3495 se trouve \u00e0 quelques 66,6 Mio al contre seulement 110,45 parsec (360 al) pour l&rsquo;\u00e9toile 58 Leo qui fait partie de notre galaxie. C\u00f4t\u00e9 brillance, la galaxie est de magnitude 12,4 et l&rsquo;\u00e9toile de magnitude 4,8<\/p>\n<p>Abel 1656 a \u00e9t\u00e9 captur\u00e9 les m\u00eames nuits et le temps de pose total est ici de 4 heures 35. Situ\u00e9 \u00e0 environ 330 millions d&rsquo;ann\u00e9es-lumi\u00e8re, cet amas de galaxies contient plus de mille membres et l&rsquo;image n&rsquo;en pr\u00e9sente que la partie centrale avec NGC4874 au centre de l&rsquo;image et NGC4889 \u00e0 sa gauche. Ces deux galaxies de type lenticulaire sont les deux membres principaux.<\/p>\n<p>NGC3495:<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-LRVB-2-GAS.jpg\" data-lbwps-width=\"1518\" data-lbwps-height=\"1028\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-LRVB-2-GAS-300x203.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-LRVB-2-GAS-300x203.jpg\" alt=\"\" width=\"300\" height=\"203\" \/><\/a><\/p>\n<p>Abel 1656:<\/p>\n<p><a href=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-Amas-Coma-GAS.jpg\" data-lbwps-width=\"1529\" data-lbwps-height=\"1030\" data-lbwps-srcsmall=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-Amas-Coma-GAS-300x202.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/groupeastronomiespa.be\/astrogas\/wp-content\/uploads\/2025\/06\/10_20180422-Amas-Coma-GAS-300x202.jpg\" alt=\"\" width=\"300\" height=\"202\" \/><\/a><\/p>\n<p>J-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;9974&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 galaxie NGC3495, l\\u0026#039;amas Coma (Abel 1656)&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, J&rsquo;ai pu profiter de cette belle semaine pass\u00e9e sous le soleil de La Fosse pour imager la galaxie NGC3495 en couleurs. Le seeing \u00e9tait assez exceptionnel, en tout cas les nuits du lundi 16 et du mardi 17, moins par la suite. Lorsque cet objet s&rsquo;est retrouv\u00e9 trop \u00e0 l&rsquo;ouest et qu&rsquo;il n&rsquo;as plus [&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-9974","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9974","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=9974"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9974\/revisions"}],"predecessor-version":[{"id":11709,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9974\/revisions\/11709"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}