{"id":10323,"date":"2022-05-02T18:58:20","date_gmt":"2022-05-02T18:58:20","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/triangle-de-fleming-pickering-nouveau-traitement\/"},"modified":"2025-06-24T20:32:22","modified_gmt":"2025-06-24T18:32:22","slug":"triangle-de-fleming-pickering-nouveau-traitement","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/triangle-de-fleming-pickering-nouveau-traitement\/","title":{"rendered":"Triangle de Fleming-Pickering – nouveau traitement"},"content":{"rendered":"

Auteur: simon-pierre (spgorza@mailfence.com)<\/p>\n

On les aime bien mais …
\nles \u00e9toiles sont parfois bien emb\u00eatantes dans les images de n\u00e9buleuses, surtout pr\u00e8s du plan galactique. L\u2019utilisation de filtres \u00e0 bande \u00e9troite am\u00e9liore les choses mais cela ne suffit pas toujours. C\u2019est le cas par exemple des dentelles du Cygne.
\nEn 2019 (voir post du 15\/10\/19<\/a>), j\u2019avais essay\u00e9 d\u2019att\u00e9nuer les \u00e9toiles par combinaisons d\u2019images prises en R et Halpha, ainsi qu\u2019en VB et OIII (avec un r\u00e9sultat plut\u00f4t bien j\u2019imagine puisqu\u2019il a \u00e9t\u00e9 publi\u00e9 dans Ciel&Espace).<\/p>\n

Apr\u00e8s avoir test\u00e9 StarNet2 dans PI sur la Rosette avec succ\u00e8s, j\u2019ai refait le traitement du triangle de Fleming-Pickering au d\u00e9part des brutes de 2019 et je trouve le r\u00e9sultat bien meilleur. <\/p>\n

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

En plus de permettre de bien mieux mettre en valeur la n\u00e9buleuse par rapport aux \u00e9toiles, cela m\u2019a permis de r\u00e9duire beaucoup plus efficacement le bruit, tout en gardant des \u00e9toiles plus fines et plus color\u00e9es dans l\u2019image finale. Les d\u00e9convolutions peuvent aussi \u00eatre faites s\u00e9par\u00e9ment pour les n\u00e9bulosit\u00e9s et les \u00e9toiles et, pour ces derni\u00e8res, il y a beaucoup moins de \u00ab dark ringing artefact \u00bb. C’est s\u00fbr \u00e0 l\u2019avenir dans mon workflow sur ce type d\u2019objets, j’int\u00e9grerai syst\u00e9matiquement la s\u00e9paration des \u00e9toiles et du reste, directement apr\u00e8s int\u00e9gration et alignement des diff\u00e9rentes couches.<\/p>\n

A bient\u00f4t,
\nSimon-P.<\/p>\n\n\n

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Auteur: simon-pierre (spgorza@mailfence.com) On les aime bien mais … les \u00e9toiles sont parfois bien emb\u00eatantes dans les images de n\u00e9buleuses, surtout pr\u00e8s du plan galactique. L\u2019utilisation de filtres \u00e0 bande \u00e9troite am\u00e9liore les choses mais cela ne suffit pas toujours. C\u2019est le cas par exemple des dentelles du Cygne. En 2019 (voir post du 15\/10\/19), […]<\/p>\n","protected":false},"author":7,"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-10323","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10323","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\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=10323"}],"version-history":[{"count":3,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10323\/revisions"}],"predecessor-version":[{"id":15693,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10323\/revisions\/15693"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}