{"id":9983,"date":"2018-05-27T12:38:00","date_gmt":"2018-05-27T12:38:00","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/rasa-first-light-sur-markarian\/"},"modified":"2025-06-08T22:45:27","modified_gmt":"2025-06-08T20:45:27","slug":"rasa-first-light-sur-markarian","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/rasa-first-light-sur-markarian\/","title":{"rendered":"RASA – First light sur Markarian"},"content":{"rendered":"

J’ai fait des essais de filtres avec un Celestron RASA ouvert \u00e0 f2.2.
\nMais voici ce qui peut \u00eatre consid\u00e9r\u00e9 comme une first light.
\nC’est une photo de la cha\u00eene de Markarian, sans aucun filtre: pas de RGB, pas d’antipollution, etc.
\nLe capteur prend tout le signal depuis le bleu jusqu’\u00e0 l’infrarouge proche.
\nLes captures ont \u00e9t\u00e9 faites en p\u00e9riph\u00e9rie de ville, avec une certaine pollution lumineuse.<\/p>\n

Les poses individuelles sont de 30 secondes, sans guidage. Je devrais peaufiner l’alignement polaire…
\nAvec la d\u00e9rive on a perdu une galaxie et l’objet a un aspect non centr\u00e9.<\/p>\n

2 heures de poses.<\/p>\n

Tr\u00e8s peu de traitement: un flat, une correction de fond de ciel, un stretch, une compression des galaxies et un tr\u00e8s l\u00e9ger d\u00e9bruitage.<\/p>\n

La cam\u00e9ra est un QSI 8300 qui d\u00e9passe le secondaire.<\/p>\n

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

Alexandre
\n2018May05
\nCelestron RASA 11″
\nQSI583<\/p>\n\n\n

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

J’ai fait des essais de filtres avec un Celestron RASA ouvert \u00e0 f2.2. Mais voici ce qui peut \u00eatre consid\u00e9r\u00e9 comme une first light. C’est une photo de la cha\u00eene de Markarian, sans aucun filtre: pas de RGB, pas d’antipollution, etc. Le capteur prend tout le signal depuis le bleu jusqu’\u00e0 l’infrarouge proche. Les captures […]<\/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-9983","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9983","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=9983"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9983\/revisions"}],"predecessor-version":[{"id":11699,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9983\/revisions\/11699"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9983"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9983"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9983"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}