{"id":8240,"date":"2019-06-03T23:11:22","date_gmt":"2019-06-03T22:11:22","guid":{"rendered":"http:\/\/outters.fr\/?p=8240"},"modified":"2025-07-15T17:04:08","modified_gmt":"2025-07-15T16:04:08","slug":"ngc3718-en-lrgb-2","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=8240","title":{"rendered":"ngc4395 en Lrgb"},"content":{"rendered":"

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ngc4395 en Lrgb
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Donn\u00e9es techniques de prise de vue<\/h2><\/div>
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Object : ngc4395
\nCommon name :
\nDate : du 28 mars au 9 avril 2019
\nOptics : Newton OO400 F3,8
\nMount : Paramount ME Num\u00e9ro 1
\nLocation : Orange observatory
\nSeeing FWHM :2.5 \u00e0 3.7<\/p>\n

Ccd : Moravian G4
\nfilter wheel : Moravian
\nfilters : Astrodon
\nLRVB
\nFocuser :Atlas
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0 de \u00b0
\nTemp ccd : -25\u00b0
\nTotal exposure 22 h
\ntout en binning 1×1
\nLuminance 98 x 10 mn
\n24R 24V 24B x 5mn<\/p>\n<\/div><\/div><\/div>

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Image LRGB<\/h2><\/a><\/div><\/div><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"<\/p>\n<\/div>

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Donn\u00e9es techniques
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Source Wikipedia<\/p>\n

NGC 3718<\/b>, also called Arp 214<\/b>, is a galaxy<\/a> located approximately 52 million light years from Earth in the constellation Ursa Major<\/a>.[4]<\/a><\/sup>[2]<\/a><\/sup>[5]<\/a><\/sup> It is either a lenticular or spiral galaxy.[6]<\/a><\/sup><\/p>\n

NGC 3718 has a warped, s-shape. This may be due to gravitational interaction between it and NGC 3729<\/a>, another spiral galaxy located 150,000 light-years away.[7]<\/a><\/sup><\/p>\n

NGC 3718 is a member of the Ursa Major Cluster<\/a>.[8]<\/a><\/sup><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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NGC 3718<\/div>\n<\/td>\n<\/tr>\n
Observation data (J2000.0<\/a> epoch<\/a>)<\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nUrsa Major<\/a><\/td>\n<\/tr>\n
Right ascension<\/a><\/th>\n\u00a011h<\/sup>\u00a032m<\/sup>\u00a034.940s<\/sup>[1]<\/a><\/sup><\/td>\n<\/tr>\n
Declination<\/a><\/th>\n+53\u00b0\u00a004\u2032\u00a004.18\u2033[1]<\/a><\/sup><\/td>\n<\/tr>\n
Redshift<\/a><\/th>\n0.003306[2]<\/a><\/sup><\/td>\n<\/tr>\n
Distance<\/a><\/th>\n47.84\u00a0\u00b1\u00a08.54\u00a0Mly<\/a> (14.667\u00a0\u00b1\u00a02.618\u00a0Mpc<\/a>)[3]<\/a><\/sup><\/td>\n<\/tr>\n
Apparent magnitude<\/a>\u00a0(V)<\/small><\/th>\n10.61[2]<\/a><\/sup><\/td>\n<\/tr>\n
Characteristics<\/th>\n<\/tr>\n
Type<\/a><\/th>\nSB(s)a pec[3]<\/a><\/sup><\/td>\n<\/tr>\n
Apparent size<\/a>\u00a0(V)<\/small><\/th>\n2.940\u2033 \u00d7 2.352\u2033[1]<\/a><\/sup><\/td>\n<\/tr>\n
Other designations<\/th>\n<\/tr>\n
Arp<\/a>\u00a0214, UGC<\/a>\u00a06524, MCG<\/a>+09-19-114, PGC<\/a>\u00a035616[2]<\/a><\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

NGC 4395<\/b> est une galaxie spirale<\/a> \u00e0 faible brillance de surface<\/a> avec un halo galactique<\/a> d’environ 8\u2032<\/a> de diam\u00e8tre. Elle poss\u00e8de plusieurs zones tr\u00e8s brillantes. Trois d’entre elles poss\u00e8dent leur propre num\u00e9ro NGC\u00a0: 4401, 4400 et 43994<\/a><\/sup>.<\/p>\n

Noyau<\/span><\/h2>\n

Le noyau de NGC 4395 est actif<\/a> et elle est class\u00e9e comme \u00e9tant une galaxie de Seyfert<\/a>. Elle est reconnue pour contenir l’un des trou noir supermassif<\/a> les plus petits (300\u00a0000\u00a0masses solaires<\/a><\/abbr>5<\/a><\/sup>, ce qui en ferait un trou noir interm\u00e9diaire<\/a>) dont la masse est d\u00e9termin\u00e9e pr\u00e9cis\u00e9ment<\/p>\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>\nChiens de chasse<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n12h<\/sup>\u00a025m<\/sup>\u00a048,9s<\/sup>1<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n+33\u00b0\u00a032\u2032\u00a048\u2033 1<\/a><\/sup><\/td>\n<\/tr>\n
Distance<\/th>\n\u223c14\u00a0millions\u00a0d’a.l.<\/a><\/abbr> (\u223c4,29\u00a0Mpc<\/a>)<\/span>2<\/a><\/sup><\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n10,61<\/a><\/sup><\/td>\n<\/tr>\n
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Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\ngalaxie spirale<\/a>
\nSA(s)m1<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9couvreur(s)<\/th>\nWilliam Herschel<\/a>3<\/a><\/sup><\/td>\n<\/tr>\n
Date<\/th>\n2 janvier 17863<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nNGC<\/a> 4399 through 44014<\/a><\/sup>, UGC<\/a> 75421<\/a><\/sup>, PGC<\/a> 405961<\/a><\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":8239,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[96,97,112,120,126,152,378],"tags":[346,382],"class_list":["post-8240","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-galaxie","category-ag400","category-ngc","category-lrgb","category-observatoire-dorange","category-toutes-categories","category-saison-2019","tag-galaxies","tag-ngc4395","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/8240","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=8240"}],"version-history":[{"count":1,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/8240\/revisions"}],"predecessor-version":[{"id":8243,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/posts\/8240\/revisions\/8243"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=\/wp\/v2\/media\/8239"}],"wp:attachment":[{"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.outters.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}