{"id":7881,"date":"2004-12-19T17:55:41","date_gmt":"2004-12-19T17:55:41","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/la-nebuleuse-obscure-ldn-1622\/"},"modified":"2025-06-21T12:29:11","modified_gmt":"2025-06-21T10:29:11","slug":"la-nebuleuse-obscure-ldn-1622","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/la-nebuleuse-obscure-ldn-1622\/","title":{"rendered":"La n\u00e9buleuse obscure LDN 1622"},"content":{"rendered":"

Voici le r\u00e9sultat que j’ai obtenu sur cette faible n\u00e9bulosit\u00e9. Compositage de 10×5 min en Ha et en vert plus 16×5 min dans le bleu en mode autoguidage avec la Genesis sur la G11. Le binning est en 3×3 pour gagner en d\u00e9tectivit\u00e9. C’est tr\u00e8s largement sous \u00e9chantillonn\u00e9, mais cet objet est tr\u00e8s faible, et j’ai donc utilis\u00e9 les 20×5 min sans filtre faites en bining 2×2 pour la luminance. Le temps de pose \u00e9quivalent total est donc de 4 hrs 40. LDN 1622 se trouve dans la constellation d’Orion, \u00e0 la m\u00eame ascension droite et juste 5\u00b0 et demi sous B\u00e9telgeuse. Sa position est: RA= 05h55 Dec= +2\u00b0. C’est un assez grand objet. L’image que je pr\u00e9sente ici reprend tout le champ de la ST10. La petite n\u00e9buleuse brillante vdB 62 entoure une \u00e9toile situ\u00e9e au sud ouest de la n\u00e9buleuse obscure.
\nPr\u00e9raitement par soustraction des darks et des flats puis traitement en agissant sur les histogrammes avec CCDSoft, finition sous PSP et adoucissement final avec Neat Image.<\/p>\n

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

\n \n
\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n<\/div>\n \n\n
\n 10\/10 - (1 vote) <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

Voici le r\u00e9sultat que j’ai obtenu sur cette faible n\u00e9bulosit\u00e9. Compositage de 10×5 min en Ha et en vert plus 16×5 min dans le bleu en mode autoguidage avec la Genesis sur la G11. Le binning est en 3×3 pour gagner en d\u00e9tectivit\u00e9. C’est tr\u00e8s largement sous \u00e9chantillonn\u00e9, mais cet objet est tr\u00e8s faible, et […]<\/p>\n","protected":false},"author":14,"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-7881","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/7881","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\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=7881"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/7881\/revisions"}],"predecessor-version":[{"id":15319,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/7881\/revisions\/15319"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=7881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=7881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=7881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}