{"id":9717,"date":"2015-05-17T10:25:24","date_gmt":"2015-05-17T10:25:24","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/hors-ha-ejection-retour-en-ha\/"},"modified":"2025-06-08T22:46:04","modified_gmt":"2025-06-08T20:46:04","slug":"hors-ha-ejection-retour-en-ha","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/hors-ha-ejection-retour-en-ha\/","title":{"rendered":"Hors Ha – Ejection – Retour en Ha"},"content":{"rendered":"

Toujours en imagerie solaire Ha…<\/p>\n

La turbulence est forte et cette danse atmosph\u00e9rique est variable suivant les longueurs d’onde. Capturer en bande \u00e9troite permet de r\u00e9duire les effets de la turbulence sur l’image.<\/p>\n

Voici une image faite avec un Etalon Ha d\u00e9cal\u00e9 de 2 Angstrom vers le rouge.
\nEn gros, le centre de bande de l’\u00e9talon se d\u00e9cale de +1A par augmentation de +9.5\u00b0C de l’\u00e9talon
\nCet \u00e9talon est call\u00e9 sur la bande Ha \u00e0 ~26\u00b0
\nLa temp\u00e9rature du filtre est r\u00e9gl\u00e9e \u00e0 45\u00b0C
\nCe qui nous fait un \u00e9cart de 19\u00b0C, donc ~2A<\/p>\n

Voici l’image \u00e0 6563+2 A:
\n\"\"<\/a><\/p>\n

A droite de la tache centrale du haut, nous avons une tra\u00een\u00e9e bizarre.
\nC’est une \u00e9jection de mati\u00e8re \u00e0 haute vitesse, qui part effet doppler se retrouve dans le domaine Ha.
\nVoici une animation de l’\u00e9jection, avec une image toute les 50s environ:<\/p>\n

<\/p>\n

De retour en Ha, apr\u00e8s un l\u00e9ger recadrage:
\n\"\"<\/a><\/p>\n

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

Alexandre
\n2015-Apr-15
\nERF
\nTaka FS128
\nBaader TZ4
\nSolar Spectrum 0.3A
\nFocal reducer
\nBasler ACA1300<\/p>\n\n\n

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

Toujours en imagerie solaire Ha… La turbulence est forte et cette danse atmosph\u00e9rique est variable suivant les longueurs d’onde. Capturer en bande \u00e9troite permet de r\u00e9duire les effets de la turbulence sur l’image. Voici une image faite avec un Etalon Ha d\u00e9cal\u00e9 de 2 Angstrom vers le rouge. En gros, le centre de bande de […]<\/p>\n","protected":false},"author":16,"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-9717","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9717","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\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=9717"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9717\/revisions"}],"predecessor-version":[{"id":11970,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9717\/revisions\/11970"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}