{"id":8688,"date":"2008-06-25T19:36:27","date_gmt":"2008-06-25T19:36:27","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/m27-2\/"},"modified":"2025-07-14T11:16:28","modified_gmt":"2025-07-14T09:16:28","slug":"m27-2","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/m27-2\/","title":{"rendered":"M27"},"content":{"rendered":"

Une tr\u00e8s (trop) courte nuit pour un classique des classiques de l’\u00e9t\u00e9: Dumbell (M27).<\/p>\n

7 poses de 10 minutes avec autoguidage sur monture AP Mach1
\n16 offset
\n16 flats
\n1 dark de 10 minutes, utilis\u00e9 pour cr\u00e9er une bad pixel map
\nCCD: Starlight Xpress SXVF-M25C
\nautoguidage via SXV autoguider et off-axis-guider, corrections toutes les 10 secondes, guide speed= 0.25 sidereal
\npas de filtre LPS (h\u00e9las)
\nVC200L \u00e0 F\/9 (1800 mm de focale – 1 pixel = 0.89 arcseconde)<\/p>\n

Capture et processing dans MaxIm; traitement final dans PhotoShop (curves + levels)<\/p>\n

Evidemment, \u00e0 F\/9, il faudrait encore plus de temps de pose total pour bien faire ressortir les d\u00e9tails.<\/p>\n

En taille r\u00e9duite :<\/p>\n

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

JPEG de qualit\u00e9 50%<\/p>\n

Pierre<\/p>\n\n\n

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

Une tr\u00e8s (trop) courte nuit pour un classique des classiques de l’\u00e9t\u00e9: Dumbell (M27). 7 poses de 10 minutes avec autoguidage sur monture AP Mach1 16 offset 16 flats 1 dark de 10 minutes, utilis\u00e9 pour cr\u00e9er une bad pixel map CCD: Starlight Xpress SXVF-M25C autoguidage via SXV autoguider et off-axis-guider, corrections toutes les 10 […]<\/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-8688","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8688","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=8688"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8688\/revisions"}],"predecessor-version":[{"id":16132,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8688\/revisions\/16132"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=8688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=8688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=8688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}