{"id":9891,"date":"2023-11-24T08:00:00","date_gmt":"2023-11-24T07:00:00","guid":{"rendered":"http:\/\/www.blog.neoprog.eu\/?p=9891"},"modified":"2023-11-17T08:54:13","modified_gmt":"2023-11-17T07:54:13","slug":"live-stacking","status":"publish","type":"post","link":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/","title":{"rendered":"Live stacking"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Apr\u00e8s des d\u00e9buts difficiles, un long apprentissage pour rattraper des ann\u00e9es sans pratique, je vais enfin pouvoir me lancer dans l\u2019astro photographie. Je n\u2019avais pas d\u00e9j\u00e0 \u00e9crit que j\u2019en faisais un peu ? Ben en fait, juste un peu.<\/p>\n\n\n\n

L\u2019\u00e9tape une fut d\u2019acheter un instrument<\/a>, certes pas le plus adapt\u00e9 \u00e0 la photographie de la voute c\u00e9leste, mais un instrument.<\/p>\n\n\n\n

Ensuite, il fallut comprendre comment fonctionnait la monture motoris\u00e9e, moi qui n\u2019avait connu qu\u2019une monture Pierre Bourges avec un t\u00e9lescope Newton de 200 mm.<\/p>\n\n\n\n

L\u2019alignement polaire, par exemple, m\u2019a demand\u00e9 quelques efforts pour que l\u2019instrument pointe correctement les objets et continue \u00e0 les suivre au cours de la nuit.<\/p>\n\n\n\n

Puis j\u2019ai fix\u00e9 un appareil photo au foyer du Celestron et tent\u00e9 mes premi\u00e8res images. <\/p>\n\n\n\n

J\u2019esp\u00e9rais r\u00e9aliser des poses de plus de trente secondes mais d\u00e8s la moiti\u00e9 de ce temps de pose j\u2019obtenais un fil\u00e9 d\u2019\u00e9toiles\u00a0sur mes images, ce qui n\u2019\u00e9tait pas le but poursuivi. C\u2019est l\u00e0 que j\u2019ai compris les limites d\u2019une monture comme la mienne avec une optique ouverte \u00e0 f\/10.<\/p>\n\n\n\n

J\u2019ai alors \u00e9quip\u00e9 mon installation d\u2019un ordinateur<\/a> et d\u2019une cam\u00e9ra pour r\u00e9aliser un auto guidage fin de la monture. Simple sur le papier, la solution s\u2019est r\u00e9v\u00e9l\u00e9e tr\u00e8s complexe au final.<\/p>\n\n\n\n

Il fallait d\u00e9j\u00e0 fixer l\u2019Asiair \u00e0 la monture ou au t\u00e9lescope et ni l\u2019une ni l\u2019autre n\u2019avait ce qu\u2019il fallait pour \u00e7a. Ce fut le d\u00e9but du bricolage. D\u2019abord un \u00e9crou fix\u00e9 dans un pas de vis pas vraiment adapt\u00e9, ensuite un premier support instable en PLA, un second d\u00e9s\u00e9quilibrant l\u2019installation, puis un troisi\u00e8me nettement plus fonctionnel. Heureusement que mon fils poss\u00e8de plusieurs imprimantes 3D.<\/p>\n\n\n\n

Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable. En astro photographie, beaucoup recommandent les lunettes de 400 mm apochromatiques ouvertes \u00e0 f\/4 ou f\/5. Sauf que cela co\u00fbte cher, tr\u00e8s cher.<\/p>\n\n\n\n

Alors j\u2019ai sorti mon objectif 500 mm ouvert \u00e0 f\/5.6 pour voir si je pouvais l\u2019utiliser comme instrument principal. J\u2019avais la queue d\u2019aronde adapt\u00e9e pour la monture, restait \u00e0 fabriquer un support pour fixer l\u2019Asiair, la lunette guide et la cam\u00e9ra. Apr\u00e8s plusieurs it\u00e9rations avec mon fils a\u00een\u00e9, nous avons accouch\u00e9 d\u2019un nouveau support acceptable qui ne d\u00e9s\u00e9quilibre pas la monture.<\/p>\n\n\n\n

Il fallait ensuite comprendre le fonctionnement de l\u2019Asiair, le param\u00e8trage de l\u2019auto guidage, les r\u00e9glages du bo\u00eetier photo pour r\u00e9ussir un premier suivi d\u2019objet et les clich\u00e9s. <\/p>\n\n\n\n

Malgr\u00e9 plein d\u2019essais, mon appareil r\u00e9sistait aux commandes de l\u2019ordinateur, ne r\u00e9alisant qu\u2019une photo sur deux et s\u2019interrompant en pleine s\u00e9rie sans raison avec un message incompr\u00e9hensible.<\/p>\n\n\n\n

\u00c9tant donn\u00e9 qu\u2019\u00e0 chaque tentative je devais sortir le mat\u00e9riel dans le jardin et disposer d\u2019un ciel clair, toutes ces exp\u00e9rimentations m\u2019avaient d\u00e9j\u00e0 pris deux mois de patience.<\/p>\n\n\n\n

J\u2019ai alors d\u00e9cid\u00e9 de r\u00e9soudre le probl\u00e8me \u00e0 la maison. J\u2019ai simul\u00e9 un ciel \u00e9toil\u00e9 avec un cache perc\u00e9 de trous tr\u00e8s fins et j\u2019ai coupl\u00e9 l\u2019Asiair au bo\u00eetier photo. Apr\u00e8s quelques heures de tests par \u00e9limination, j\u2019ai enfin trouv\u00e9 la fonction qui posait probl\u00e8me et l\u2019appareil a lanc\u00e9 un premier empilement sans interruption.<\/p>\n\n\n\n

Du coup, d\u00e8s qu\u2019il a fait presque beau, disons entre deux grosses averses, j\u2019ai sorti le setup au fond du jardin et j\u2019ai point\u00e9 la monture vers la galaxie d\u2019Androm\u00e8de. Apr\u00e8s une longue mise en station et une heure de patience, j\u2019avais obtenu quarante neuf clich\u00e9s de soixante secondes chacun.<\/p>\n\n\n\n

Reste \u00e0 ma\u00eetriser le logiciel Siril pour empiler les images, r\u00e9duire le bruit et am\u00e9liorer le rendu pour obtenir un visuel un temps soit peu artistique. Parce que, tant qu\u2019\u00e0 photographier le ciel, j\u2019aimerais que le r\u00e9sultat soit un minimum esth\u00e9tique.<\/p>\n","protected":false},"excerpt":{"rendered":"

Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable. Continuer la lecture →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":9892,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[2810,7],"tags":[2955,185,1756,178,1118],"class_list":["post-9891","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-astro","category-photo","tag-asiair","tag-astronomie","tag-monture","tag-photo","tag-reglages","post_format-post-format-image"],"yoast_head":"\nLive stacking - Le Blog du N\u00e9oprog<\/title>\n<meta name=\"description\" content=\"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Live stacking - Le Blog du N\u00e9oprog\" \/>\n<meta property=\"og:description\" content=\"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/\" \/>\n<meta property=\"og:site_name\" content=\"Le Blog du N\u00e9oprog\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-24T07:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1364\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Neoprog\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Le_Brun_JC\" \/>\n<meta name=\"twitter:site\" content=\"@Le_Brun_JC\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Neoprog\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/\"},\"author\":{\"name\":\"Neoprog\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#\\\/schema\\\/person\\\/47c594bf12736b172b772f0f02bcf511\"},\"headline\":\"Live stacking\",\"datePublished\":\"2023-11-24T07:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/\"},\"wordCount\":711,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#\\\/schema\\\/person\\\/47c594bf12736b172b772f0f02bcf511\"},\"image\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/M-31-1.jpg\",\"keywords\":[\"Asiair\",\"astronomie\",\"monture\",\"photo\",\"r\u00e9glages\"],\"articleSection\":[\"Astro\",\"Photo\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/\",\"url\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/\",\"name\":\"Live stacking - Le Blog du N\u00e9oprog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/M-31-1.jpg\",\"datePublished\":\"2023-11-24T07:00:00+00:00\",\"description\":\"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\\\/10 pour utiliser une focale nettement plus raisonnable.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/M-31-1.jpg\",\"contentUrl\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2023\\\/11\\\/M-31-1.jpg\",\"width\":2048,\"height\":1364,\"caption\":\"SIMPLE = T \\\/ file does conform to FITS standard BITPIX = -32 \\\/ number of bits per data pixel NAXIS = 2 \\\/ number of data axes NAXIS1 = 6064 \\\/ length of data axis 1 NAXIS2 = 4040 \\\/ length of data axis 2 NAXIS3 = 1 \\\/ length of data axis 3 EXTEND = T \\\/ FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H MIPS-FHI= 1 \\\/ Upper visualization cutoff MIPS-FLO= 0.00143435 \\\/ Lower visualization cutoff BZERO = 0 \\\/ offset data range to that of unsigned short BSCALE = 1 \\\/ default scaling factor DATE = '2023-11-10T08:35:36' \\\/ UTC date that FITS file was created DATE-OBS= '2023-11-08T19:09:46.887112' \\\/ YYYY-MM-DDThh:mm:ss observation start, INSTRUME= 'Nikon Z6_2' \\\/ instrument name OBSERVER= ' ' \\\/ observer name TELESCOP= 'Celestron AVX\\\/CGE\\\/CGEM\\\/CGX' \\\/ telescope used to acquire this image XPIXSZ = 5.95 \\\/ X pixel size microns YPIXSZ = 5.95 \\\/ Y pixel size microns XBINNING= 1 \\\/ Camera binning mode YBINNING= 1 \\\/ Camera binning mode BAYERPAT= 'RGGB ' \\\/ Bayer color pattern FOCALLEN= 487 \\\/ Camera focal length EXPTIME = 60 \\\/ Exposure time [s] STACKCNT= 49 \\\/ Stack frames LIVETIME= 2940 \\\/ Exposure time after deadtime correction EXPSTART= 2.46026e+06 \\\/ Exposure start time (standard Julian date) EXPEND = 2.46026e+06 \\\/ Exposure end time (standard Julian date) IMAGETYP= 'Light ' \\\/ Type of image RA = 11.058 \\\/ Image center Right Ascension (deg) DEC = 41.4172 \\\/ Image center Declination (deg) HISTORY sum stacking wit\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/index.php\\\/2023\\\/11\\\/24\\\/live-stacking\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Live stacking\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#website\",\"url\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/\",\"name\":\"Le Blog du N\u00e9oprog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#\\\/schema\\\/person\\\/47c594bf12736b172b772f0f02bcf511\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/#\\\/schema\\\/person\\\/47c594bf12736b172b772f0f02bcf511\",\"name\":\"Neoprog\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/autoportrait-2.jpg\",\"url\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/autoportrait-2.jpg\",\"contentUrl\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/autoportrait-2.jpg\",\"width\":1024,\"height\":681,\"caption\":\"Neoprog\"},\"logo\":{\"@id\":\"https:\\\/\\\/www.blog.neoprog.eu\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/autoportrait-2.jpg\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Live stacking - Le Blog du N\u00e9oprog","description":"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/","og_locale":"fr_FR","og_type":"article","og_title":"Live stacking - Le Blog du N\u00e9oprog","og_description":"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable.","og_url":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/","og_site_name":"Le Blog du N\u00e9oprog","article_published_time":"2023-11-24T07:00:00+00:00","og_image":[{"width":2048,"height":1364,"url":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg","type":"image\/jpeg"}],"author":"Neoprog","twitter_card":"summary_large_image","twitter_creator":"@Le_Brun_JC","twitter_site":"@Le_Brun_JC","twitter_misc":{"\u00c9crit par":"Neoprog","Dur\u00e9e de lecture estim\u00e9e":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#article","isPartOf":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/"},"author":{"name":"Neoprog","@id":"https:\/\/www.blog.neoprog.eu\/#\/schema\/person\/47c594bf12736b172b772f0f02bcf511"},"headline":"Live stacking","datePublished":"2023-11-24T07:00:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/"},"wordCount":711,"commentCount":0,"publisher":{"@id":"https:\/\/www.blog.neoprog.eu\/#\/schema\/person\/47c594bf12736b172b772f0f02bcf511"},"image":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#primaryimage"},"thumbnailUrl":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg","keywords":["Asiair","astronomie","monture","photo","r\u00e9glages"],"articleSection":["Astro","Photo"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/","url":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/","name":"Live stacking - Le Blog du N\u00e9oprog","isPartOf":{"@id":"https:\/\/www.blog.neoprog.eu\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#primaryimage"},"image":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#primaryimage"},"thumbnailUrl":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg","datePublished":"2023-11-24T07:00:00+00:00","description":"Pour simplifier et complexifier le probl\u00e8me, j\u2019ai laiss\u00e9 tomber le Celestron 8 ouvert \u00e0 f\/10 pour utiliser une focale nettement plus raisonnable.","breadcrumb":{"@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#primaryimage","url":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg","contentUrl":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2023\/11\/M-31-1.jpg","width":2048,"height":1364,"caption":"SIMPLE = T \/ file does conform to FITS standard BITPIX = -32 \/ number of bits per data pixel NAXIS = 2 \/ number of data axes NAXIS1 = 6064 \/ length of data axis 1 NAXIS2 = 4040 \/ length of data axis 2 NAXIS3 = 1 \/ length of data axis 3 EXTEND = T \/ FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H MIPS-FHI= 1 \/ Upper visualization cutoff MIPS-FLO= 0.00143435 \/ Lower visualization cutoff BZERO = 0 \/ offset data range to that of unsigned short BSCALE = 1 \/ default scaling factor DATE = '2023-11-10T08:35:36' \/ UTC date that FITS file was created DATE-OBS= '2023-11-08T19:09:46.887112' \/ YYYY-MM-DDThh:mm:ss observation start, INSTRUME= 'Nikon Z6_2' \/ instrument name OBSERVER= ' ' \/ observer name TELESCOP= 'Celestron AVX\/CGE\/CGEM\/CGX' \/ telescope used to acquire this image XPIXSZ = 5.95 \/ X pixel size microns YPIXSZ = 5.95 \/ Y pixel size microns XBINNING= 1 \/ Camera binning mode YBINNING= 1 \/ Camera binning mode BAYERPAT= 'RGGB ' \/ Bayer color pattern FOCALLEN= 487 \/ Camera focal length EXPTIME = 60 \/ Exposure time [s] STACKCNT= 49 \/ Stack frames LIVETIME= 2940 \/ Exposure time after deadtime correction EXPSTART= 2.46026e+06 \/ Exposure start time (standard Julian date) EXPEND = 2.46026e+06 \/ Exposure end time (standard Julian date) IMAGETYP= 'Light ' \/ Type of image RA = 11.058 \/ Image center Right Ascension (deg) DEC = 41.4172 \/ Image center Declination (deg) HISTORY sum stacking wit"},{"@type":"BreadcrumbList","@id":"https:\/\/www.blog.neoprog.eu\/index.php\/2023\/11\/24\/live-stacking\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.blog.neoprog.eu\/"},{"@type":"ListItem","position":2,"name":"Live stacking"}]},{"@type":"WebSite","@id":"https:\/\/www.blog.neoprog.eu\/#website","url":"https:\/\/www.blog.neoprog.eu\/","name":"Le Blog du N\u00e9oprog","description":"","publisher":{"@id":"https:\/\/www.blog.neoprog.eu\/#\/schema\/person\/47c594bf12736b172b772f0f02bcf511"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.blog.neoprog.eu\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":["Person","Organization"],"@id":"https:\/\/www.blog.neoprog.eu\/#\/schema\/person\/47c594bf12736b172b772f0f02bcf511","name":"Neoprog","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2022\/09\/autoportrait-2.jpg","url":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2022\/09\/autoportrait-2.jpg","contentUrl":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2022\/09\/autoportrait-2.jpg","width":1024,"height":681,"caption":"Neoprog"},"logo":{"@id":"https:\/\/www.blog.neoprog.eu\/wp-content\/uploads\/2022\/09\/autoportrait-2.jpg"}}]}},"_links":{"self":[{"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/posts\/9891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/comments?post=9891"}],"version-history":[{"count":1,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/posts\/9891\/revisions"}],"predecessor-version":[{"id":9893,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/posts\/9891\/revisions\/9893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/media\/9892"}],"wp:attachment":[{"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/media?parent=9891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/categories?post=9891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.blog.neoprog.eu\/index.php\/wp-json\/wp\/v2\/tags?post=9891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}