{"id":5012,"date":"2012-10-23T09:43:49","date_gmt":"2012-10-23T08:43:49","guid":{"rendered":"http:\/\/outters.fr\/?p=5012"},"modified":"2025-07-15T17:04:15","modified_gmt":"2025-07-15T16:04:15","slug":"ngc7000","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=5012","title":{"rendered":"Ngc7000"},"content":{"rendered":"

<\/div><\/div><\/span>

Ngc7000<\/strong>
\n<\/span><\/p><\/h2><\/span>

<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>
\"Ngc7000\"<\/a><\/span><\/div><\/div><\/div>
<\/div><\/div><\/span>

Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

<\/div><\/div><\/div>

\"outters-nicolas\"Voici la premi\u00e8re mouture avec le couple Rcos12″ et ses 2850mm de focale \u00e0 F9 et la cam\u00e9ra CCD Apogee 16803.
\nIl aura fallu un aplanisseur de champs Rcos pour contenir tous les pixels de la ccd avec une courbure de 11% dans les coins, ainsi dire peu visible.
\nVu les probl\u00e8mes de turbu locale je me suis cantonn\u00e9 au bining 2×2 ce qui donne encore 2048×2048 pixels ce qui est encore tr\u00e8s confortable avec cette config de mat\u00e9riel.
\nLes poses ont \u00e9t\u00e9 de 20mn avec un guidage par DO MMOAG Astrodon et une CCd de guidage Atik 314L+. Il aura fallu proc\u00e9der \u00e0 un montage de bagues pas tr\u00e8s commode mais au final qui marche pas trop mal et que je dois encore am\u00e9liorer.
\nLe rotator Rcos fonctionne bien et permet des cadrages aux petits oignons. Le champs de la cam\u00e9ra de guidage permet de s’abstenir de rechercher une \u00e9toile guide ou de tourner le rotateur pour chercher une \u00e9toile, le rotateur doit servir uniquement pour cadrer ce qui rend la tache tr\u00e8s confortable au demeurant.
\nCette config sera utilis\u00e9e \u00e0 SIRENE avec mon ami Didier Plassard dans quelques semaines si tout va bien .<\/p>\n

Voici une partie de NGC7000 et plus particuli\u00e8rement \u00ab\u00a0the wall\u00a0\u00bb partie que j’affectionne par sa forme qui fait ressembler \u00e0 une montagne genre Everest.
\nJ’adore \u00e9galement les bandes de poussi\u00e8res qui se jettent carr\u00e9ment dans the wall.
\nEncore quelques petits probl\u00e8mes de guidage mais \u00e7a va venir \"\"<\/p>\n<\/div>

<\/div>
<\/i><\/div>

Image SHO<\/h2><\/a><\/div><\/div><\/div>
<\/i><\/div><\/div><\/div><\/div>
<\/i><\/div><\/div><\/div><\/div>
<\/div><\/div>
<\/div><\/div><\/span>

Donn\u00e9es techniques
\n<\/span><\/p><\/h2><\/span>

<\/div><\/div><\/div>
<\/i><\/div>

Donn\u00e9es techniques de prise de vue<\/h2><\/div>
<\/div>
Object :NGC7000
\nCommon name : The wall
\nDate : du 24 au 27 juin 2010
\nTime : 23 h
\nOptics :Rcos 12″
\nMount : Paramount ME Num\u00e9ro 1
\nLocation : Orange Observatory
\nSeeing : FWHM de 2,2 \u00e0 3 arc sec\/pixel (ccdinspector)
\nCcd : Apogee 16803
\nfilter wheel :Apogee
\nfilters : Astrodon s2Hao3
\nFocuser :TCC Rcos
\nGuiding : MMOAG Astrodon et Atik 314L+
\nTemp. out : 20 \u00b0
\nTemp ccd : -22\u00b0<\/p>\n

Total exposure :16 h
\nLuminance Ha : 21 x20 mn bining 2×2
\nSII 12 x 20 mn bining 2×2
\nHa : 21 x 20mn bining 2×2
\nOIII 15 x 20 mn bining 2×2<\/div><\/div><\/div>

<\/i><\/div>

Donn\u00e9es scientifiques<\/h2><\/div>
<\/div>
La n\u00e9buleuse de l’Am\u00e9rique du Nord<\/b> (ou NGC<\/a> 7000<\/b> ou nebula North America<\/span><\/i><\/b>) est une n\u00e9buleuse en \u00e9mission<\/a> situ\u00e9e \u00e0 environ\u00a0580\u00a0pc<\/a><\/span> (\u223c1\u00a0890\u00a0a.l.<\/a>)<\/span> dans la constellation<\/a> du Cygne<\/a>, pr\u00e8s de Alpha Cygni<\/a>1<\/a><\/sup>. Elle a une taille environ\u00a015\u00a0pc<\/a><\/span> (\u223c48,9\u00a0a.l.<\/a>)<\/span>1<\/a><\/sup>.<\/p>\n

La forme de la n\u00e9buleuse<\/a> fait penser \u00e0 celle de l’Am\u00e9rique du Nord<\/a>, d’o\u00f9 son nom.<\/p>\n\n\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>\nCygne<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n20h<\/sup>\u00a058m<\/sup>\u00a047s<\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n+44\u00b0\u00a019\u2032\u00a048\u2033<\/td>\n<\/tr>\n
Distance<\/th>\nenviron\u00a0580\u00a0pc<\/a><\/span> (\u223c1\u00a0890\u00a0a.l.<\/a>)<\/span><\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n6<\/td>\n<\/tr>\n
Dimensions apparentes (V)<\/small><\/th>\n6’x4′<\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nN\u00e9buleuse<\/a><\/td>\n<\/tr>\n
Masse<\/a><\/th>\n0,1\u00a0M\u2609<\/sub><\/a><\/td>\n<\/tr>\n
Dimensions<\/th>\n?
\n(?\u00a0pc<\/a>)<\/td>\n<\/tr>\n
Magnitude absolue<\/a><\/th>\n?<\/td>\n<\/tr>\n
Couleur (B-V)<\/small><\/th>\n?<\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nNGC 7000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2145,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[244,102,108,112,123,126,152],"tags":[],"class_list":["post-5012","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-saison-2010","category-nebuleuse","category-telescope-rc300","category-ngc","category-sho","category-observatoire-dorange","category-toutes-categories","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/5012","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=5012"}],"version-history":[{"count":4,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/5012\/revisions"}],"predecessor-version":[{"id":6954,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/5012\/revisions\/6954"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/media\/2145"}],"wp:attachment":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}