{"id":10454,"date":"2023-09-12T21:54:14","date_gmt":"2023-09-12T21:54:14","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/st-veran-2023-imagerie-en-calcium-k-au-t300\/"},"modified":"2025-06-08T22:43:56","modified_gmt":"2025-06-08T20:43:56","slug":"st-veran-2023-imagerie-en-calcium-k-au-t300","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/st-veran-2023-imagerie-en-calcium-k-au-t300\/","title":{"rendered":"St V\u00e9ran 2023 – Imagerie en Calcium K au T300"},"content":{"rendered":"

Il est plus difficile d’imager dans les longueurs d’ondes plus courtes, dans le proche UV ici.<\/p>\n

Le filtre bande \u00e9troite utilis\u00e9 est un Lunt Calcium K de 2.4A de bande passante, centr\u00e9 sur 393nm.
\nAu vu de l’\u00e9troitesse de la bande passante, la luminosit\u00e9 diminue sensiblement. Il faut pousser le gain et le temps d’exposition.
\nLa turbulence se fait sentir et le nombre de bonnes images est tr\u00e8s limit\u00e9.
\nIl s’agit de stacks de 15 et 22 images ici.<\/p>\n

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

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

Alexandre
\n2023-Aug-10
\nSt Veran Observatory
\nSolar newton T300 f6
\nBarlow x2.5
\nLunt CaK filter
\nASI 290<\/p>\n\n\n

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

Il est plus difficile d’imager dans les longueurs d’ondes plus courtes, dans le proche UV ici. Le filtre bande \u00e9troite utilis\u00e9 est un Lunt Calcium K de 2.4A de bande passante, centr\u00e9 sur 393nm. Au vu de l’\u00e9troitesse de la bande passante, la luminosit\u00e9 diminue sensiblement. Il faut pousser le gain et le temps d’exposition. […]<\/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-10454","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10454","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=10454"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10454\/revisions"}],"predecessor-version":[{"id":11232,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10454\/revisions\/11232"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}