{"id":9770,"date":"2015-10-16T07:54:09","date_gmt":"2015-10-16T07:54:09","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/ngc891-3\/"},"modified":"2025-06-08T22:46:00","modified_gmt":"2025-06-08T20:46:00","slug":"ngc891-3","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/ngc891-3\/","title":{"rendered":"NGC891"},"content":{"rendered":"

Bonjour,
\nla galaxie NGC891 est, avec NGC4565 (la galaxie de l’Aiguille) le prototype des galaxies spirales vues exactement par la tranche. Situ\u00e9e dans la constellation d’Androm\u00e8de, elle se trouve \u00e0 environ 30 millions d’ann\u00e9es-lumi\u00e8re de la Terre et, pour un diam\u00e8tre de quelques 100.000 ann\u00e9es-lumi\u00e8re et une masse de quelques 320 milliards de Soleils elle nous donne une bonne id\u00e9e de ce \u00e0 quoi doit ressembler notre Voie Lact\u00e9e vue de profil. On voit tr\u00e8s bien la bande de poussi\u00e8re qui parcourt la galaxie sur toute sa longueur et les astronomes professionnels ont d\u00e9couvert que des courants de gaz s’\u00e9chappent de la galaxie, ce qui serait le signe d’une grande activit\u00e9.<\/p>\n

L’image pr\u00e9sent\u00e9e ici a \u00e9t\u00e9 prise depuis l’observatoire de La Fosse ce 11\/10\/2015 avec la ccd SBIG ST10XME plac\u00e9e au foyer du C11 \u00e0 F\/D 6,3 (focale de 1760mm). Les captures couleurs ont \u00e9t\u00e9 faites en bin 2×2 et la luminance en bin 1×1; le temps de pose total est de 5hr55min.<\/p>\n

Le champ entier pr\u00e9sent\u00e9 \u00e0 75% de la taille originale. Le nord est en haut:<\/p>\n

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

Un crop en taille originale avec le nord \u00e0 droite:<\/p>\n

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

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

Bonjour, la galaxie NGC891 est, avec NGC4565 (la galaxie de l’Aiguille) le prototype des galaxies spirales vues exactement par la tranche. Situ\u00e9e dans la constellation d’Androm\u00e8de, elle se trouve \u00e0 environ 30 millions d’ann\u00e9es-lumi\u00e8re de la Terre et, pour un diam\u00e8tre de quelques 100.000 ann\u00e9es-lumi\u00e8re et une masse de quelques 320 milliards de Soleils elle […]<\/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-9770","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9770","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=9770"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9770\/revisions"}],"predecessor-version":[{"id":11916,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9770\/revisions\/11916"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}