{"id":8775,"date":"2008-12-20T22:26:04","date_gmt":"2008-12-20T22:26:04","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/m31-classique-de-lautomne\/"},"modified":"2025-07-14T10:39:43","modified_gmt":"2025-07-14T08:39:43","slug":"m31-classique-de-lautomne","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/m31-classique-de-lautomne\/","title":{"rendered":"M31, classique de l’automne."},"content":{"rendered":"

Capture d’un large objet au moyen d’un DSLR non-modifi\u00e9: 45*240s = 3h de pause<\/p>\n

Traitements au moyen d’un software Astro pur, c\u00e0d sans passer par Ze photoshop des Grands astrophotographes, dont j’appr\u00e9hende la learning curve.
\nIl s’agissait aussi pour moi de me pousser au traitement du ciel profond au moyen de la derni\u00e8re version de Maxim: V5.<\/p>\n

Captures auto-guid\u00e9e par la STV\/SBIG que Pierre m’a mise \u00e0 disposition. Un tout grand merci \ud83d\ude42
\nSur une s\u00e9rie de 48 poses, 1 a \u00e9t\u00e9 rejet\u00e9e pour cause de tra\u00een\u00e9e d’avion.
\n2 ont \u00e9t\u00e9 rejet\u00e9es par la nouvelle fonction de Stack automatique de MaximV5 avec un crit\u00e8re de Roudness <=115%.<\/p>\n

La photo r\u00e9duite:<\/p>\n

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

La photo en format original:
\n\"\"<\/a><\/p>\n

D\u00e9tails:
\nDate: 27-Sep-08
\nLocation – City: Eupen
\nObject: Andromeda Galaxy
\nMagnitude: 3.4
\nSize [ArcMin]: 190×61
\nMount & Optic(s) Mount Maker\/Type: Vixen\/Sphinx
\nMount & Optic(s) OTA Maker\/Type: Televue\/NP101
\nMount & Optic(s) F(mm)\/D(mm): 540\/101=5.4
\nMount & Optic(s) Filter: IDAS LPS
\nCCD Maker\/Type: Canon\/EOS40D
\nCCD Ship size [mm]: 22.2×14.8
\nCCD Pixel array: 3888×2592
\nCCD Pixel size [\u00b5m]: 5.7×5.7
\nCCD FOV [ArcMin]: 140×93
\nCCD FOV [ArcSec\/Pixel]: 2.15
\nGuider – Optic OTA Maker\/Type: Takahashi\/FS-60C
\nGuider – Optic F(mm)\/D(mm): 355\/60=5.9
\nGuider – CCD Maker\/Type: SBIG\/STV
\nCapture technique Exp Qty: > 48
\nSetting Sensitivity\/ASA: 800
\nSetting Exp Duration [Sec]: 240<\/p>\n

Maxim DL V5
\nCalibration
\n> Dark
\n> Flat
\n> FlatDark
\n> Bias<\/p>\n

Stack (V5)
\n> Select 45 pics
\nCurves<\/p>\n

2012-Feb-05 Traitement sous photoshop:
\n\"\"<\/a><\/p>\n\n\n

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

Capture d’un large objet au moyen d’un DSLR non-modifi\u00e9: 45*240s = 3h de pause Traitements au moyen d’un software Astro pur, c\u00e0d sans passer par Ze photoshop des Grands astrophotographes, dont j’appr\u00e9hende la learning curve. Il s’agissait aussi pour moi de me pousser au traitement du ciel profond au moyen de la derni\u00e8re version de […]<\/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":[2],"tags":[],"class_list":["post-8775","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8775","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=8775"}],"version-history":[{"count":4,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8775\/revisions"}],"predecessor-version":[{"id":16093,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8775\/revisions\/16093"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=8775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=8775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=8775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}