{"id":8398,"date":"2007-04-19T14:15:03","date_gmt":"2007-04-19T14:15:03","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/galaxies-dans-le-lion\/"},"modified":"2025-06-14T20:03:33","modified_gmt":"2025-06-14T18:03:33","slug":"galaxies-dans-le-lion","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/galaxies-dans-le-lion\/","title":{"rendered":"Galaxies dans le Lion"},"content":{"rendered":"

M65, M66 et NGC3628 sont trois galaxies voisines dans le Lion.<\/p>\n

Voici une combinaison d’images prises en plusieurs nuits, en g\u00e9n\u00e9ral stables mais pas toujours tr\u00e8s claires (voiles nuageux).<\/p>\n

VC200L+FR6.4 (focale 1280 mm, 1 pixel = 1.05 arcsec)
\nNew Atlux
\n20Da + IDAS LPS
\niso 800<\/p>\n

Le but premier de ces images a \u00e9t\u00e9 de servir de test – concluant – pour l’autoguidage et la correction PEC.
\nLe trio se trouve en effet proche de la d\u00e9clinaison 0, ce qui rend les conditions tests plus contraignantes.<\/p>\n

Les poses varient de 1 minute (non guid\u00e9es) \u00e0 8 minutes (guid\u00e9es).
\nAu total environ 4H30 de pose.<\/p>\n

Flat et darks, pas d’offset (car tous les darks correspondants sont \u00e0 dur\u00e9e identique aux lights).<\/p>\n

Calibration, alignement et combinaison dans MaxIm.
\nRetrait du gradient r\u00e9siduel dans Iris par estimateur local (tr\u00e8s efficace !) et cropping.
\nDDP
\nConversion jpeg qualit\u00e9 85 %<\/p>\n

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

L’image compl\u00e8te:
\n\"\"<\/a><\/p>\n\n\n

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

M65, M66 et NGC3628 sont trois galaxies voisines dans le Lion. Voici une combinaison d’images prises en plusieurs nuits, en g\u00e9n\u00e9ral stables mais pas toujours tr\u00e8s claires (voiles nuageux). VC200L+FR6.4 (focale 1280 mm, 1 pixel = 1.05 arcsec) New Atlux 20Da + IDAS LPS iso 800 Le but premier de ces images a \u00e9t\u00e9 de […]<\/p>\n","protected":false},"author":15,"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-8398","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8398","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\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=8398"}],"version-history":[{"count":3,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8398\/revisions"}],"predecessor-version":[{"id":14955,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8398\/revisions\/14955"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=8398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=8398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=8398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}