{"id":3717,"date":"2016-07-26T14:33:04","date_gmt":"2016-07-26T13:33:04","guid":{"rendered":"http:\/\/outters.fr\/?p=3717"},"modified":"2025-07-15T17:04:13","modified_gmt":"2025-07-15T16:04:13","slug":"m97-et-m108","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=3717","title":{"rendered":"M97 et M108"},"content":{"rendered":"

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m97 et m108<\/strong>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"Voici la premi\u00e8re LRGB faite avec le SV400 Newton F3,8.
\nJ’y suis all\u00e9 un peu fort avec tr\u00e8s peu de poses en RGB et donc le traitement de la couleur n’a pas \u00e9t\u00e9 tr\u00e8s favorable. Les prochaines images j’ai pouss\u00e9 un peu plus le nombre de poses.
\nMalgr\u00e9 cela la luminance est tr\u00e8s riche en fond de ciel avec des centaines de galaxies en arri\u00e8re plan. On voit ici tout le potentiel du diam\u00e8tre.<\/p>\n

Sur M97 on distingue le halo bleu autour de la NP et on le voit bien \u00e9galement sur la luminance avec une zone plus contrast\u00e9e en bas \u00e0 droite du halo.<\/p>\n<\/div>

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Image LRGB<\/h2><\/a><\/div><\/div><\/div>
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Donn\u00e9es techniques
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Donn\u00e9es techniques de prise de vue<\/h2><\/div>
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Object :M97-M108 en LRGB
\nDate : images du 9 au 13 avril 2015
\nOptics : Newton SV400 F3,8
\nMount : Paramount ME Num\u00e9ro 1
\nLocation : Orange observatory
\nSeeing : FWHM de 2,25 \u00e0 3
\nCcd : Moravian G4
\nfilter wheel : Moravian
\nfilters : Astrodon
\nLRGB
\nFocuser :Atlas
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0 de +6 \u00e0 +15
\nTemp ccd : -25\u00b0
\nTotal exposure :10h20
\nL : 53 x 10′
\nR : 3 x 10′ B2x2
\nV: 3 x 10′ B2x2
\nB : 3 x 10′ B2x2<\/div><\/div><\/div>
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Donn\u00e9es scientifiques<\/h2><\/div>
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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Donn\u00e9es d\u2019observation
\n(\u00c9poque<\/a> J2000.0<\/a>)<\/small><\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nGrande Ourse<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n11h<\/sup>\u00a014m<\/sup>\u00a047,73s<\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n+55\u00b0\u00a001\u2032\u00a008,5\u2033<\/td>\n<\/tr>\n
Distance<\/th>\nenviron\u00a0621\u00a0pc<\/a><\/span> (\u223c2\u00a0030\u00a0a.l.<\/a>)<\/span><\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n+9,9<\/td>\n<\/tr>\n
Dimensions apparentes (V)<\/small><\/th>\n3,4×3,3 minutes d’arc<\/a><\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nN\u00e9buleuse plan\u00e9taire<\/a><\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9couvreur(s)<\/th>\nPierre M\u00e9chain<\/a><\/td>\n<\/tr>\n
Date<\/th>\n1781<\/a><\/td>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nM97, NGC 3587<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
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<\/div><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2465,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[111,120,126,152,239,96,97],"tags":[477,478],"class_list":["post-3717","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-messier","category-lrgb","category-observatoire-dorange","category-toutes-categories","category-saison-2015","category-galaxie","category-ag400","tag-m108","tag-m97","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/3717","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=3717"}],"version-history":[{"count":7,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/3717\/revisions"}],"predecessor-version":[{"id":8930,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/3717\/revisions\/8930"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/media\/2465"}],"wp:attachment":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}