{"id":16969,"date":"2026-05-13T20:32:06","date_gmt":"2026-05-13T18:32:06","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/?p=16969"},"modified":"2026-05-14T10:05:55","modified_gmt":"2026-05-14T08:05:55","slug":"m63-galaxie-du-tournesol","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/m63-galaxie-du-tournesol\/","title":{"rendered":"M63 – Galaxie du Tournesol"},"content":{"rendered":"

M63, la galaxie du Tournesol, est une galaxie spirale situ\u00e9e dans la constellation des Chiens de Chasse.
\nElle serait \u00e9loign\u00e9e de nous de 25 millions d’al.<\/p>\n

M63 a \u00e9t\u00e9 d\u00e9couverte par l’astronome fran\u00e7ais Pierre M\u00e9chain en 1779.
\nSa structure en spirale a \u00e9t\u00e9 l’une des premi\u00e8res spirales reconnues comme telles au milieu du XIXe si\u00e8cle.<\/p>\n

La voici avec le VC200L (taille r\u00e9duite \u00e0 50%, qualit\u00e9 JPEG 75):<\/p>\n

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

Le champ fait 32 par 23 minutes d’arc environ.<\/p>\n

Si vous voulez voir l’image en pleine r\u00e9solution et sans perte de qualit\u00e9 (14 MB):
\nhttps:\/\/www.phenrotay.be\/GAS\/20260513\/VC200L-M63_Full.jpg<\/a><\/p>\n

Les d\u00e9tails techniques :<\/p>\n

Vixen VC200L, diam\u00e8tre 200 mm, focale 1800 mm (F\/9)
\nCam\u00e9ra ASI1600MMPro (3.8 microns)
\nR\u00e9solution 0.435 arcsec\/pixel
\nFiltres Optolong (LRGB)
\nL : 77 images de 2 minutes
\nR : 20 images de 4 minutes
\nG : 23 …
\nB : 21 …
\nMonture AP Mach1 guid\u00e9e<\/p>\n

Capture avec MaxIm\/DL, 5 nuits seulement en avril-mai, beaucoup de rafales de vent.
\nTraitement dans PixInsight.<\/p>\n

Pas mal de petites galaxies sont facilement discernables \u00e0 l’arri\u00e8re-plan.
\nLa galaxie M63 ferait partie d’un groupe de galaxies qui compte au moins 10 membres, le groupe de M51.<\/p>\n

Pierre<\/p>\n

 <\/p>\n

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 <\/p>\n\n\n

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\n 9.8\/10 - (13 votes) <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

M63, la galaxie du Tournesol, est une galaxie spirale situ\u00e9e dans la constellation des Chiens de Chasse. Elle serait \u00e9loign\u00e9e de nous de 25 millions d’al. M63 a \u00e9t\u00e9 d\u00e9couverte par l’astronome fran\u00e7ais Pierre M\u00e9chain en 1779. Sa structure en spirale a \u00e9t\u00e9 l’une des premi\u00e8res spirales reconnues comme telles au milieu du XIXe si\u00e8cle. […]<\/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-16969","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/16969","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=16969"}],"version-history":[{"count":4,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/16969\/revisions"}],"predecessor-version":[{"id":16974,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/16969\/revisions\/16974"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=16969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=16969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=16969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}