{"id":5944,"date":"2017-05-29T21:13:51","date_gmt":"2017-05-29T20:13:51","guid":{"rendered":"http:\/\/outters.fr\/?p=5944"},"modified":"2025-07-15T17:04:10","modified_gmt":"2025-07-15T16:04:10","slug":"ngc3953-ngc3917-ugc6840","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=5944","title":{"rendered":"ngc3953-ngc3917-ugc6840"},"content":{"rendered":"

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ngc3953-ngc3917-ugc6840<\/strong>
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\"ngc3953-ngc3917-ugc6840\"<\/a><\/span><\/div><\/div><\/div>
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Image LRGB<\/h2><\/a><\/div><\/div><\/div>
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Image L invers\u00e9e bas niveaux<\/h2><\/a><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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

Cette zone de la grande ourse est peu imag\u00e9e, il y a entre autre 3 belles galaxies dans ce champs.<\/p>\n

Le 400 Newton a eu besoin de pas mal d’heures de pose pour aboutir \u00e0 une image sympa.<\/p>\n

Vous remarquerez que le fond du ciel n’est pas noir, allez donc voir l’image L invers\u00e9e<\/a> pour voir les zones en bas \u00e0 gauche de la galaxie ngc3953 et une autre zone qui est aussi en bas de BTS50 (galaxie) et vous remarquerez aussi en haut \u00e0 droite l’extension fine au dessus de LEDA 2418577<\/b><\/span>.<\/p>\n<\/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 : ngc3953-ngc3917-ugc6840
\nCommon name :
\nDate : images du 31-12-2016 au 17-05-2017
\nOptics : Newton SV400 F3,8
\nMount : Paramount ME Num\u00e9ro 1
\nLocation : Orange observatory
\nSeeing FWHM : 2.27 \u00e0 2.90
\nCcd : Moravian G4
\nfilter wheel : Moravian
\nfilters : Astrodon
\nLRVB
\nFocuser :Atlas
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0 de -2 \u00e0 +19\u00b0
\nTemp ccd : -25\u00b0
\nTotal exposure :16.5 h
\ntout en binning 1×1
\nLuminance 67 x 10 mn + 32 RGB
\n12R 12V 8B x10mn<\/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
NGC 3953<\/p>\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>\u00a053m<\/sup>\u00a048,9s<\/sup>1<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n52\u00b0\u00a019\u2032\u00a036\u2033 1<\/a><\/sup><\/td>\n<\/tr>\n
Coordonn\u00e9es galactiques<\/a><\/th>\n142.217980 62.590250<\/td>\n<\/tr>\n
Distance<\/th>\nenviron\u00a017 Mpc<\/a><\/abbr><\/span> (\u223c55,4 millions d’ a.l.<\/a>\u00a0)<\/abbr><\/span><\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n10.8<\/td>\n<\/tr>\n
Redshift<\/a><\/th>\n0.003510 +\/- 0.000007<\/td>\n<\/tr>\n
Vitesse radiale<\/a><\/th>\n1\u00a0052 +\/- 2 km\/s\u00a0km<\/a>\/s<\/a><\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nGalaxie<\/td>\n<\/tr>\n
Type de galaxie<\/a><\/th>\nSpirale barr\u00e9e<\/a> SB(r)bc<\/td>\n<\/tr>\n
Dimensions<\/th>\n6′.9 \u00d7 3′.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
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