{"id":5063,"date":"2012-10-23T10:04:04","date_gmt":"2012-10-23T09:04:04","guid":{"rendered":"http:\/\/outters.fr\/?p=5063"},"modified":"2025-07-15T17:04:15","modified_gmt":"2025-07-15T16:04:15","slug":"m53-ngc5053","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=5063","title":{"rendered":"m53 – ngc5053"},"content":{"rendered":"

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m53 – ngc5053<\/strong>
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\"m53<\/a><\/span><\/div><\/div><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"Voici une \u00ab\u00a0petite\u00a0\u00bb image sans pr\u00e9tention vues les conditions mais deux amas sur la m\u00eame image c’est toujours une impression sympa !
\nVoici M53 et NGC5053 plus faible mais tout autant sympa \u00e0 voir et distinguer.
\nEn tout cas les deux amas sont bien diff\u00e9rents, NGC5053 ressemblant plus \u00e0 un amas ouvert, avis aux sp\u00e9cialistes des amas pour en dire un peu plus sur ces deux objets peu imag\u00e9s.<\/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 : M53 et NGC5053
\nDate : du 17 mars au 7 avril 2010
\nTime : 21 h
\nOptics :TEC140 F7
\nMount : Paramount ME Num\u00e9ro 2
\nLocation : Orange Observatory
\nSeeing : FWHM de 2,8 \u00e0 3 arc sec\/pixel (ccdinspector)
\nCcd : FLI Proline 16803
\nfilter wheel : FLI
\nfilters : Astrodon RGB true color
\nFocuser :Robofocus et focusmax
\nTemp. out : 5 \u00b0
\nTemp ccd : -35\u00b0
\nTotal exposure :6 h 20<\/p>\n

Luminance : 20 x 10 mn bining 1×1
\nrouge 12 x 5 mn bining 1×1
\nvert : 12 x 5 mn bining 1×1
\nBleu 12 x 5 mn bining 1×1<\/div><\/div><\/div>

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Donn\u00e9es scientifiques<\/h2><\/div>
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M53<\/b> (ou NGC<\/a> 5024<\/b>) est un amas globulaire<\/a> situ\u00e9 dans la constellation<\/a> de la Chevelure de B\u00e9r\u00e9nice<\/a>. Il a \u00e9t\u00e9 d\u00e9couvert par Johann Elert Bode<\/a> le 3 f\u00e9vrier 1775<\/a>, puis ind\u00e9pendamment par Charles Messier<\/a> en 1777<\/a>. William Herschel<\/a> fut le premier \u00e0 le r\u00e9soudre en \u00e9toiles.<\/p>\n

Il s’agit de l’un des amas globulaires les plus lointains que l’on connaisse, situ\u00e9 \u00e0 environ 58\u00a0000 ann\u00e9es-lumi\u00e8re<\/a> du syst\u00e8me solaire<\/a>. \u00c0 cette distance, son diam\u00e8tre angulaire apparent de 12,6 minutes d’arc<\/a> correspond \u00e0 un diam\u00e8tre r\u00e9el de 250 ann\u00e9es-lumi\u00e8re. L’amas dans son ensemble se rapproche du syst\u00e8me solaire \u00e0 une vitesse comprise entre 75<\/span> et 115<\/span>\u00a0km\/s<\/span><\/span>.<\/p>\n

M53 contient 47 \u00e9toiles variables<\/a> de type RR Lyrae<\/a> prouv\u00e9es.<\/p>\n

NGC 5053<\/b> est un amas globulaire<\/a> situ\u00e9 \u00e0 environ 53\u00a0500 ann\u00e9es-lumi\u00e8re<\/a> (al) dans la constellation de la Chevelure de B\u00e9r\u00e9nice<\/a>. Sa structure principale s’\u00e9tend sur environ 160 al de diam\u00e8tre. Cette amas contiendrait seulement 3\u00a0500 \u00e9toiles[r\u00e9f.<\/abbr>\u00a0souhait\u00e9e]<\/a><\/sup>.<\/p>\n

Il a \u00e9t\u00e9 d\u00e9couvert \u00e0 1\u00b0 \u00e0 l’est de M53<\/a> par Herschel<\/a> le 14 mars 1784.<\/p>\n\n\n\n\n\n\n\n\n\n\n
NGC 5053<\/td>\n<\/tr>\n
Donn\u00e9es d\u2019observation
\n(\u00c9poque<\/a> J2000)<\/small><\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nChevelure de B\u00e9r\u00e9nice<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n13h<\/sup>\u00a016m<\/sup>\u00a027,09s<\/sup>1<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n17\u00b0\u00a042\u2032\u00a000,9\u2033 1<\/a><\/sup><\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nAmas globulaire<\/a><\/td>\n<\/tr>\n
Liste des amas globulaires<\/a><\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n

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