{"id":9530,"date":"2022-05-26T09:43:16","date_gmt":"2022-05-26T08:43:16","guid":{"rendered":"http:\/\/outters.fr\/?p=9530"},"modified":"2025-07-15T17:04:03","modified_gmt":"2025-07-15T16:04:03","slug":"ngc5033-lrgb","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=9530","title":{"rendered":"ngc5033 Lrgb"},"content":{"rendered":"

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NGC5033 en Lrgb<\/strong>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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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 : ngc5033<\/span>
\nCommon name :
\nDate : images du 26\/04 au 30\/05-2022
\nOptics : Rcos 12.5″
\nMount : Paramount ME Num\u00e9ro 3
\nLocation : Sirene observatory
\nSeeing FWHM :2.21 \u00e0 3.76
\nCcd : Apogee 16U
\nfilter wheel : Apogee
\nfilters : Astrodon RVB
\nFocuser :Rcos
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0 de \u00b0
\nTemp. out : T\u00b0 de4.8 \u00e0 +13.3
\nTemp ccd : -25\u00b0
\nTotal exposure :15h30
\ntout en binning 1×1
\nLuminance 57 x 10 mn
\nRVB 24 x 5′ pour chaque filtre<\/p>\n<\/div><\/div><\/div>

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Donn\u00e9es scientifiques<\/h2><\/div>
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Source Wikipedia<\/em><\/strong><\/p>\n

NGC 5033<\/b>\u00a0est une\u00a0galaxie spirale<\/a>\u00a0situ\u00e9e dans la\u00a0constellation<\/a>\u00a0des\u00a0Chiens de chasse<\/a>\u00a0\u00e0 environ 40\u00a0millions d’ann\u00e9es-lumi\u00e8re<\/a>\u00a0de la\u00a0Voie lact\u00e9e<\/a>. NGC 5033 a \u00e9t\u00e9 d\u00e9couvert par l’astronome\u00a0germano<\/a>–britannique<\/a>\u00a0William Herschel<\/a>\u00a0en\u00a01785<\/a>.<\/p>\n

La\u00a0classe de luminosit\u00e9<\/a>\u00a0de NGC 5033 est III et elle pr\u00e9sente une large\u00a0raie HI<\/a>. Elle renferme \u00e9galement des\u00a0r\u00e9gions d’hydrog\u00e8ne ionis\u00e9<\/a>. C’est aussi une\u00a0galaxie active<\/a>\u00a0de type\u00a0Seyfert<\/a>\u00a01.91<\/a><\/sup>.<\/p>\n

Avec une\u00a0brillance de surface<\/a>\u00a0\u00e9gale \u00e0\u00a014,52\u00a0mag<\/a>\/am<\/a>2<\/sup><\/span>, on peut qualifier NGC 5033 de\u00a0galaxie \u00e0 faible brillance de surface<\/a>\u00a0(LSB en anglais pour\u00a0low surface brightness<\/span><\/i>). Les galaxies LSB sont des galaxies diffuses (D) avec une brillance de surface inf\u00e9rieure de moins d’une magnitude \u00e0 celle du\u00a0ciel nocturne<\/a>\u00a0ambiant.<\/p>\n

Plus d’une vingtaine de mesures non bas\u00e9es sur le\u00a0d\u00e9calage vers le rouge<\/a>\u00a0(redshift<\/i>) donnent une distance de 16,468\u00a0\u00b1\u00a06,721\u00a0Mpc<\/a><\/abbr>\u00a0(\u223c53,7\u00a0millions d’a.l.<\/a><\/abbr>)5<\/a><\/sup>, ce qui est \u00e0 l’int\u00e9rieur des distances calcul\u00e9es en employant la valeur du d\u00e9calagec<\/a><\/sup>.<\/p>\n<\/div><\/div><\/div>

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