{"id":9086,"date":"2010-12-05T22:15:15","date_gmt":"2010-12-05T22:15:15","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/m33-en-lrgb\/"},"modified":"2025-06-08T22:47:39","modified_gmt":"2025-06-08T20:47:39","slug":"m33-en-lrgb","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/m33-en-lrgb\/","title":{"rendered":"M33 en LRGB"},"content":{"rendered":"

Bonsoir,<\/p>\n

Voici une \u00ab\u00a0second light\u00a0\u00bb avec cette camera QSI583.
\nSur la pr\u00e9c\u00e9dente, il y avait des dark pixels; ils semblaient li\u00e9s \u00e0 un probl\u00e8me de pr\u00e9traitement, g\u00e9r\u00e9 ici.
\nPas casse-cou pour ces premiers essais, j’ai pris un objet large et ‘lumineux’.
\nLa mise en station \u00e9tait hasardeuse; je vous ai \u00e9pargn\u00e9 le fil\u00e9 des bords en rognant l’image.<\/p>\n

Le c\u0153ur :
\n\"\"<\/a><\/p>\n

L\u2019image rogn\u00e9e :
\n\"\"<\/a><\/p>\n

Olivier m’a demand\u00e9 de mettre plus d\u00e9tails sur les traitements ; voici :
\n2010Oct10\t\t\t\t\t<\/p>\n

Televue\/NP101
\nF [mm]\t540
\nD [mm]\t101
\nFilter – Astonomik CLS\t\t\t<\/p>\n

QSI\/583WSG
\nFOV – X [ArcMin]\t113.6
\nFOV – Y [ArcMin]\t85.6
\nFOV – X [ArcSec\/Pixel]\t2.1\t4.2\t4.2\t4.2
\nFOV – Y [ArcSec\/Pixel]\t2.1\t4.2\t4.2\t4.2
\nExp Qty\tLRGB\t11\t12\t15\t12
\nExp Duration [Sec]\tLRGB\t600\t300\t300\t300<\/p>\n

Processing
\nMaxim DL
\nCalibration
\n > Bias
\n > Dark
\n > Flat
\n > Dark Flat
\n > Bias Flat\t\t\t\t\t<\/p>\n

RGB Channels
\n > Double Size\t\t\t\t\t<\/p>\n

Color Combine
\n > No Image preparation: Low\/high level adaptation, etc.
\n > LRGB combine\t\t\t\t\t<\/p>\n

Crop
\nDeconvolution
\nCurves
\nColor balance
\nSaturation
\nStretch
\nDenoising – Very light\t\t\t\t<\/p>\n

Alexandre<\/p>\n

2012-Feb-13 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":"

Bonsoir, Voici une \u00ab\u00a0second light\u00a0\u00bb avec cette camera QSI583. Sur la pr\u00e9c\u00e9dente, il y avait des dark pixels; ils semblaient li\u00e9s \u00e0 un probl\u00e8me de pr\u00e9traitement, g\u00e9r\u00e9 ici. Pas casse-cou pour ces premiers essais, j’ai pris un objet large et ‘lumineux’. La mise en station \u00e9tait hasardeuse; je vous ai \u00e9pargn\u00e9 le fil\u00e9 des bords […]<\/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-9086","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9086","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=9086"}],"version-history":[{"count":1,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9086\/revisions"}],"predecessor-version":[{"id":12597,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/9086\/revisions\/12597"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=9086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=9086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=9086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}