{"id":9921,"date":"2017-06-17T21:16:20","date_gmt":"2017-06-17T21:16:20","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/desaluminer\/"},"modified":"2025-06-08T22:45:32","modified_gmt":"2025-06-08T20:45:32","slug":"desaluminer","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/desaluminer\/","title":{"rendered":"D\u00e9saluminer…"},"content":{"rendered":"

Dans le cas de mon newton solaire, trait\u00e9 pour renvoyer le spectre rouge, le flux de lumi\u00e8re renvoy\u00e9 vers le porte-oculaire est trop important pour l’observation directe.<\/p>\n

Un filtre densit\u00e9 neutre n\u2019y r\u00e9siste pas.
\nL’observation solaire reste dangereuse et personnellement, je ne mets pas mes yeux derri\u00e8re un montage non commercial.<\/p>\n

Le filtre ND3.0 endommag\u00e9 par le flux:
\n\"\"<\/a><\/p>\n

Pour limiter le flux en \u00ab\u00a0lumi\u00e8re blanche\u00a0\u00bb, du moins sans filtre interf\u00e9rentiel Ha dans le montage, j’ai opt\u00e9 pour un secondaire d\u00e9salumin\u00e9. Il agit comme un prisme de Herschel, renvoyant 4% du flux.<\/p>\n

Pour enlever l’aluminure, il suffit simplement de tremper l’optique dans un bain de perchlorure de fer. C’est un produit peu on\u00e9reux et grandement utilis\u00e9 par les \u00e9lectroniciens pour la gravure de leurs circuits.<\/p>\n

Un secondaire (de premier prix) dans un bain de perchlorure:
\n\"\"<\/a><\/p>\n

L’attaque de l’aluminure est tr\u00e8s rapide:
\n\"\"<\/a><\/p>\n

J’ai laiss\u00e9 le secondaire faire la trempette (Crf Roger Rabbit) toute la nuit :
\n\"\"<\/a><\/p>\n

Rin\u00e7age \u00e0 l’eau distill\u00e9e, montage avec du silicone pour aquarium.
\n\"\"<\/a><\/p>\n

Alexandre
\nPS : Merci \u00e0 Norma pour l\u2019astuce du perchlorure<\/p>\n\n\n

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

Dans le cas de mon newton solaire, trait\u00e9 pour renvoyer le spectre rouge, le flux de lumi\u00e8re renvoy\u00e9 vers le porte-oculaire est trop important pour l’observation directe. Un filtre densit\u00e9 neutre n\u2019y r\u00e9siste pas. L’observation solaire reste dangereuse et personnellement, je ne mets pas mes yeux derri\u00e8re un montage non commercial. Le filtre ND3.0 endommag\u00e9 […]<\/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-9921","post","type-post","status-publish","format-standard","hentry","category-astrobricolage"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9921","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=9921"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9921\/revisions"}],"predecessor-version":[{"id":11766,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9921\/revisions\/11766"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}