{"id":9822,"date":"2016-05-28T13:01:26","date_gmt":"2016-05-28T13:01:26","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/le-couple-de-galaxies-m81-m82\/"},"modified":"2025-06-08T22:45:56","modified_gmt":"2025-06-08T20:45:56","slug":"le-couple-de-galaxies-m81-m82","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/le-couple-de-galaxies-m81-m82\/","title":{"rendered":"le couple de galaxies M81 – M82"},"content":{"rendered":"

Bonjour,
\nvoici une photo du c\u00e9l\u00e8bre couple de galaxies de la grande Ourse prise par Roland Papy depuis la proche banlieue li\u00e9geoise. Le fait que ces galaxies passent pratiquement au z\u00e9nith au printemps et l’utilisation d’un filtre LPR tr\u00e8s efficace a permis d’obtenir un excellent r\u00e9sultat malgr\u00e9 la pollution lumineuse omnipr\u00e9sente. Une troisi\u00e8me galaxie, NGC3077 est visible sur la droite de l’image en bordure du champ; elle fait aussi partie du groupe M81-M82 avec lequel elle est en interaction.<\/p>\n

\"\"<\/a><\/p>\n

un crop sur les deux galaxies:<\/p>\n

\"\"<\/a><\/p>\n

Les param\u00e8tres:
\nNewton D=200mm F=1175mm,
\nCorrecteur de coma TS avec facteur de r\u00e9duction 0.95 ce qui donne au final un F\/D=5.6,
\npetit axe du secondaire=5cm, porte oculaire extra court pour un CPL maximum,<\/p>\n

Lunette guide achromatique SKW D=70 F=500(75\u20ac) avec r\u00e9duction \u00e0 F=400 sur platine en parall\u00e8le au t\u00e9lescope,
\nAutoguidage Lacerta Mgen,<\/p>\n

APN Nikon 24\/36 D810A
\n35×180 secondes, RAW \u00e0 ISO 2000, Intervalom\u00e8tre int\u00e9gr\u00e9,<\/p>\n

Filtre UHC-extended,
\nle 13 mars 2016 dans banlieue de Li\u00e8ge, 5km au nord de la place St-Lambert. Les poses ont du \u00eatre interrompues parce que le tube est venu contre la monture un peu avant le passage au m\u00e9ridien.<\/p>\n

R.Papy<\/p>\n\n\n

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\n Veuillez voter<\/span>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Bonjour, voici une photo du c\u00e9l\u00e8bre couple de galaxies de la grande Ourse prise par Roland Papy depuis la proche banlieue li\u00e9geoise. Le fait que ces galaxies passent pratiquement au z\u00e9nith au printemps et l’utilisation d’un filtre LPR tr\u00e8s efficace a permis d’obtenir un excellent r\u00e9sultat malgr\u00e9 la pollution lumineuse omnipr\u00e9sente. Une troisi\u00e8me galaxie, NGC3077 […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-9822","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=9822"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9822\/revisions"}],"predecessor-version":[{"id":11868,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9822\/revisions\/11868"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}