{"id":9970,"date":"2018-04-13T21:32:12","date_gmt":"2018-04-13T21:32:12","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/seeing-dirune-a-leuro-space-center\/"},"modified":"2025-06-08T22:45:27","modified_gmt":"2025-06-08T20:45:27","slug":"seeing-dirune-a-leuro-space-center","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/seeing-dirune-a-leuro-space-center\/","title":{"rendered":"Seeing dirune \u00e0 l’Euro Space Center"},"content":{"rendered":"

En compl\u00e9ment des images prises par Didier, lors de l’animation solaire \u00e0 l’Euro Space Center, j’ai fait une mesure de seeing diurne avec le SSM, Solar Scintillation Monitor.<\/p>\n

Voici une abjecte visualisation de la mesure faite d\u00e8s le d\u00e9gagement des nuages.
\nPassons sur l’aspect touffu des courbes. Ce qui est important, ce sont les minimums, de l’ordre de 0.5ArcSec.<\/p>\n

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

Un zoom sur dix minutes au d\u00e9but de l’observation montre 8 pics \u00ab\u00a0bas\u00a0\u00bb, o\u00f9 le seeing est de l’ordre de 0.5 \u00e0 0.7 Arcec.
\nCes ‘pics’ ont une dur\u00e9e de quelques secondes \u00e0 quelques dizaines de secondes, temps suffisant pour capturer \u00e0 l\u2019aide d\u2019une cam\u00e9ra rapide des s\u00e9quences lors d’un bon seeing.<\/p>\n

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

Le premier graphique montre vers 11h40 une p\u00e9riode int\u00e9ressante, o\u00f9 la valeur de seeing semble avoir pertinemment baiss\u00e9.
\nLe seeing \u00e9tait tir\u00e9 ver le bas \u00e0 des valeurs proches de 0.5 Arcsec pendant pr\u00e8s de 2 minutes. Je n’ai jamais vu \u00e7a!<\/p>\n

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

Note sur ces deux derni\u00e8res courbes: il s’agit d’une moyenne sur 5 secondes.
\nJe trouve cette moyenne repr\u00e9sentative du potentiel du site. En effet, 5 secondes de capture avec une cam\u00e9ra rapide du march\u00e9 permet d’acqu\u00e9rir environ 600 images \u00e0 bon potentiel.<\/p>\n

Alexandre
\n2018-Apr-11<\/p>\n\n\n

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En compl\u00e9ment des images prises par Didier, lors de l’animation solaire \u00e0 l’Euro Space Center, j’ai fait une mesure de seeing diurne avec le SSM, Solar Scintillation Monitor. Voici une abjecte visualisation de la mesure faite d\u00e8s le d\u00e9gagement des nuages. Passons sur l’aspect touffu des courbes. Ce qui est important, ce sont les minimums, […]<\/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":[5],"tags":[],"class_list":["post-9970","post","type-post","status-publish","format-standard","hentry","category-vieduclub"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9970","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=9970"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9970\/revisions"}],"predecessor-version":[{"id":11711,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9970\/revisions\/11711"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}