{"id":10223,"date":"2021-02-23T21:21:31","date_gmt":"2021-02-23T21:21:31","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/ic443-nebuleuse-de-la-meduse\/"},"modified":"2025-06-08T22:44:48","modified_gmt":"2025-06-08T20:44:48","slug":"ic443-nebuleuse-de-la-meduse","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/ic443-nebuleuse-de-la-meduse\/","title":{"rendered":"IC443 – N\u00e9buleuse de la M\u00e9duse"},"content":{"rendered":"

IC443 – n\u00e9buleuse dans les G\u00e9meaux, un reste de supernova.
\nSa taille apparente est sup\u00e9rieure \u00e0 45 minutes d’arc.<\/p>\n

135 poses de 240 s avec filtre IDAS NBZ dual band, cam\u00e9ra ASI533MCPro.
\nLe r\u00e9sultat est similaire \u00e0 celui obtenu en palette HOO (Hydrog\u00e8ne alpha=R, Oxyg\u00e8ne III=G et B).<\/p>\n

Image finale r\u00e9duite \u00e0 50 % de la taille initiale, JPEG quality 70%.<\/p>\n

Takahashi FS60C avec flattener (375 mm de focale \u00e0 F6.2 )sur AP Mach1.<\/p>\n

3 nuits de temp\u00e9rature glaciale (-10 *C) et une nuit une semaine plus tard, sous une temp\u00e9rature agr\u00e9able de 10\u00b0C mais avec la Lune tr\u00e8s g\u00eanante.<\/p>\n

Combinaison avec PixInsight, puis DBE, Histogram.<\/p>\n

Le filtre IDAS NBZ remplace le NBX, retir\u00e9 du march\u00e9 car montrant un terrible halo autour des \u00e9toiles brillantes. Echange standard et sans frais…
\nIci un halo subsiste, mais acceptable – l’\u00e9toile eta Geminorum (Propus) est de magnitude 3,2.<\/p>\n

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

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

IC443 – n\u00e9buleuse dans les G\u00e9meaux, un reste de supernova. Sa taille apparente est sup\u00e9rieure \u00e0 45 minutes d’arc. 135 poses de 240 s avec filtre IDAS NBZ dual band, cam\u00e9ra ASI533MCPro. Le r\u00e9sultat est similaire \u00e0 celui obtenu en palette HOO (Hydrog\u00e8ne alpha=R, Oxyg\u00e8ne III=G et B). Image finale r\u00e9duite \u00e0 50 % de […]<\/p>\n","protected":false},"author":15,"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-10223","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10223","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\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=10223"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10223\/revisions"}],"predecessor-version":[{"id":11459,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/10223\/revisions\/11459"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=10223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=10223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=10223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}