{"id":9918,"date":"2017-06-05T21:53:18","date_gmt":"2017-06-05T21:53:18","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/t250-newton-solaire-dans-le-bleu-aussi\/"},"modified":"2025-06-08T22:45:32","modified_gmt":"2025-06-08T20:45:32","slug":"t250-newton-solaire-dans-le-bleu-aussi","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/t250-newton-solaire-dans-le-bleu-aussi\/","title":{"rendered":"T250 Newton solaire – Dans le bleu aussi"},"content":{"rendered":"

Le traitement du newton solaire est destin\u00e9 d’abord au Halpha. Mais sa courbe de r\u00e9flexion est calcul\u00e9e pour laisser aussi passer du bleu.
\nL’aspect du miroir est violac\u00e9 d\u2019ailleurs.
\nLe but du renvoi du spectre bleu \u00e9tant d’imager en Kline.<\/p>\n

Le flux en rouge est cependant dominant et je n’ai pas voulu risquer mon filtre Kline.<\/p>\n

Voici un essai en montant \u00e0 la place du secondaire un miroir d\u00e9-alumin\u00e9. Il fait office de prime et Herschell et r\u00e9duit le flux total entrant.
\nJ’ai eu difficile cependant \u00e0 collimater au laser, laser vert dans mon cas. Le flux total revenant sur le porte-oculaire est amoindri par le traitement du primaire et par la r\u00e9flexion vitreuse du secondaire.<\/p>\n

Le secondaire d\u00e9-alumin\u00e9:
\n\"\"<\/a><\/p>\n

Une image apr\u00e8s tentative de collimation. Les conditions de seeing \u00e9taient assez m\u00e9diocres.
\n\"\"<\/a><\/p>\n

Une image en tentant la haute r\u00e9solution avec une powermate x5.
\nLe facteur de la powermate d\u00e9pend de la distance lentille-cam\u00e9ra.
\nIl est plus de l’ordre de x6 \u00e0 x6.5 ici.
\nCe qui nous donne une focale r\u00e9sultante de l’ordre de 10 \u00e0 11m ici.
\n\"\"<\/a><\/p>\n

Alexandre
\n2017May26
\nT250 Solar Newton
\nASI174<\/p>\n\n\n

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

Le traitement du newton solaire est destin\u00e9 d’abord au Halpha. Mais sa courbe de r\u00e9flexion est calcul\u00e9e pour laisser aussi passer du bleu. L’aspect du miroir est violac\u00e9 d\u2019ailleurs. Le but du renvoi du spectre bleu \u00e9tant d’imager en Kline. Le flux en rouge est cependant dominant et je n’ai pas voulu risquer mon filtre […]<\/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":[3],"tags":[],"class_list":["post-9918","post","type-post","status-publish","format-standard","hentry","category-astrobricolage"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9918","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=9918"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9918\/revisions"}],"predecessor-version":[{"id":11769,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9918\/revisions\/11769"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}