 {"id":1750,"date":"2017-06-03T16:48:40","date_gmt":"2017-06-03T14:48:40","guid":{"rendered":"http:\/\/gap47.astrosurf.com\/?page_id=1750"},"modified":"2019-12-17T18:20:12","modified_gmt":"2019-12-17T16:20:12","slug":"reunissage","status":"publish","type":"page","link":"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/","title":{"rendered":"R\u00e9unissage"},"content":{"rendered":"<p style=\"text-align: left;\" align=\"justify\"><span style=\"font-family: times new roman,times,serif; font-size: 20px;\">La surface issue de l\u2019\u00e9bauchage pr\u00e9sente des irr\u00e9gularit\u00e9s notables (d\u00e9fauts zonaux, astigmatisme) que l\u2019op\u00e9ration ait \u00e9t\u00e9 men\u00e9e manuellement ou avec l\u2019aide d\u2019une machine. Il convient donc de \u00ab&nbsp;r\u00e9unir&nbsp;\u00bb cette surface pour l\u2019amener vers la meilleure sph\u00e8re possible. On en profitera \u00e9galement pour \u00ab&nbsp;effacer&nbsp;\u00bb les \u00e9cailles profondes qu\u2019un travail d\u2019\u00e9bauchage agressif aura provoqu\u00e9es dans le verre. Enfin, le r\u00e9unissage permettra d\u2019ajuster le rayon de courbure au plus pr\u00eat de la valeur choisie.<\/span><\/p>\n<p style=\"text-align: left;\" align=\"justify\"><span style=\"font-family: times new roman,times,serif; font-size: 20px;\">On proc\u00e8de en g\u00e9n\u00e9ral avec l\u2019outil pleine taille que l\u2019on positionne alternativement dessus ou dessous. Pour corriger la valeur du rayon de courbure, on privil\u00e9giera l\u2019une ou l\u2019autre de ces positions (miroir dessus pour raccourcir le rayon de courbure, miroir dessous pour le rallonger). L\u2019abrasif utilis\u00e9 est le Carbo 120 voire 180 si la surface \u00e9bauch\u00e9e est relativement r\u00e9guli\u00e8re au d\u00e9part. Tout d\u2019abord, on r\u00e9alise quelques s\u00e9ch\u00e9es sans lester le disque sup\u00e9rieur le temps d\u2019user grossi\u00e8rement les carreaux les plus saillants. On utilise de pr\u00e9f\u00e9rence des courses droites centr\u00e9es d\u2019environ 1\/3 D d\u2019amplitude. En d\u00e9but de travail, on \u00ab&nbsp;sent&nbsp;\u00bb les carreaux saillants qui agissent comme des pivots. Quelques s\u00e9ch\u00e9es plus tard, on leste le disque sup\u00e9rieur avec des masses r\u00e9parties (par exemple 10 \u00e0 15 kg pour un 400). En effet, le poids acc\u00e9l\u00e8re le travail du verre et am\u00e9liore l\u2019\u00e9tat de surface.Assez rapidement le niveau d\u2019ensemble des carreaux s\u2019\u00e9galise et les courses offrent une r\u00e9sistance homog\u00e8ne. On emploie ensuite des courses normales toujours de 1\/3 D d\u2019amplitude en essayant de varier leur forme (W, infini, 8). On v\u00e9rifiera l\u2019homog\u00e9n\u00e9it\u00e9 du r\u00e9unissage au sph\u00e9rom\u00e8tre et\/ou en v\u00e9rifiant l\u2019effacement r\u00e9gulier de lignes trac\u00e9es au feutre ind\u00e9l\u00e9bile sur le miroir.<\/span><\/p>\n<p style=\"text-align: left;\" align=\"justify\"><span style=\"font-family: times new roman,times,serif; font-size: 20px;\">Le r\u00e9unissage peut \u00eatre consid\u00e9r\u00e9 termin\u00e9 lorsque la forme est homog\u00e8ne et l\u2019\u00e9tat de surface r\u00e9gulier (d\u00e9poli homog\u00e8ne d\u00e9pourvu de grosses \u00e9cailles d\u2019\u00e9bauchage). Un nettoyage complet et m\u00e9ticuleux doit alors \u00eatre effectu\u00e9 avant de passer \u00e0 l\u2019\u00e9tape suivante&nbsp;: changement des rev\u00eatements plastiques (poste, desserte), nettoyage du point d\u2019eau et du support de nettoyage des disques, changement des cales, changement du molleton, changement des accessoires (brosses, \u00e9ponges, chiffons, \u2026), nettoyage des masselottes, \u2026<\/span><\/p>\n<table style=\"width: 588px;\" cellspacing=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"width: 586px;\" bgcolor=\"#336699\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><strong><span class=\"Style11\" style=\"font-family: arial,helvetica,sans-serif;\"><span style=\"color: #ffffff;\">Les \u00e9tapes et les gestes du r\u00e9unissage<\/span> <\/span><\/strong><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 580px;\" border=\"1\" cellspacing=\"0\" align=\"center\">\n<tbody>\n<tr>\n<td style=\"width: 120.117px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3447 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/Reuni01-1.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3449 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni02-1.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 144px;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3448 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni03-1.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 141px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3450 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni04-1.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<\/tr>\n<tr valign=\"top\">\n<td style=\"width: 120.117px;\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><em><span class=\"Style12\" style=\"font-family: times new roman,times,serif;\">Le Carbo 120 est saupoudr\u00e9 \u00e0 sec sur la surface du miroir ou de l&rsquo;outil avec une petite cuill\u00e8re ou une sali\u00e8re.<\/span><\/em><\/span><\/div>\n<\/td>\n<td style=\"width: 131.883px;\">\n<div class=\"Style12\" align=\"center\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On pulv\u00e9rise de l\u2019eau sur l\u2019abrasif puis on m\u00e9lange le tout en une sorte de boue avec le doigt.<\/span><\/em><\/span><\/div>\n<\/td>\n<td style=\"width: 144px;\">\n<p class=\"Style12\" align=\"center\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On pose tr\u00e8s d\u00e9licatement le disque sup\u00e9rieur en d\u00e9cal\u00e9 par rapport au disque inf\u00e9rieur (pour passer les mains) et bien parall\u00e8le \u00e0 lui.<\/span><\/em><\/span><\/p>\n<\/td>\n<td style=\"width: 141px;\">\n<p class=\"Style12\" align=\"center\"><span style=\"font-size: 20px;\"><em><span class=\"Style12\" style=\"font-family: times new roman,times,serif;\">On centre ensuite le disque sup\u00e9rieur en le poussant et le soulageant de son poids. <a href=\"http:\/\/gap47.astrosurf.com\/index.php\/pose-depose\/\" target=\"_blank\" rel=\"noopener noreferrer\">(<strong>Vid\u00e9o)<\/strong><\/a> <\/span><\/em><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3451 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni05.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3452 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni06.jpg\" alt=\"\" width=\"200\" height=\"150\">&nbsp;<\/div>\n<\/td>\n<td style=\"width: 144px;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3453 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni07.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 141px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3454 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni08.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px;\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><em><span class=\"Style12\" style=\"font-family: times new roman,times,serif;\">On r\u00e9alise quelques courses de r\u00e9partition de l\u2019abrasif en soulageant le disque sup\u00e9rieur.<\/span><\/em><\/span><\/div>\n<\/td>\n<td class=\"Style12\" style=\"width: 131.883px;\">\n<div class=\"Style12\" align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On adopte d\u2019abord des courses droites de 1\/3 D. (<a href=\"http:\/\/gap47.astrosurf.com\/index.php\/course-droite\/\" target=\"_blank\" rel=\"noopener noreferrer\">vid\u00e9o<\/a>)<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<td class=\"Style12\" style=\"width: 144px;\">\n<div class=\"Style12\" align=\"center\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Au bout de quelques s\u00e9ch\u00e9es, on leste le disque sup\u00e9rieur avec un poids significatif (ici 4 masselottes de 2,5 kg chacune)<\/span><\/em><\/span><\/div>\n<\/td>\n<td class=\"Style12\" style=\"width: 141px;\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Au d\u00e9but tous les carreaux ne touchent pas (par transparence du dos du miroir humect\u00e9 d\u2019eau, on voit que l\u2019abrasif ne se r\u00e9parti pas uniform\u00e9ment).<\/span><\/em><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3455\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni09.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px; text-align: center;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3456\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni10.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 144px; text-align: center;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3457\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni11.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 141px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3458\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni15.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px;\" valign=\"top\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><em><span class=\"Style12\" style=\"font-family: times new roman,times,serif;\">On peut constater le ph\u00e9nom\u00e8ne en observant l\u2019outil s\u00e9ch\u00e9 \u00e0 contre jour (parties non us\u00e9es des carreaux plus brillantes)<\/span><\/em><\/span><\/div>\n<\/td>\n<td style=\"width: 131.883px;\" valign=\"top\">\n<div class=\"Style12\" align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">A la fin d\u2019une s\u00e9ch\u00e9e, on nettoie \u00e0 la douchette le miroir pos\u00e9 sur un support \u2026<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<td style=\"width: 144px;\" valign=\"top\">\n<div class=\"Style12\" align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">\u2026 et on \u00e9ponge la surface des carreaux de l\u2019outil (on laisse les grains dans les sillons&nbsp;: ils retomberont lorsque l\u2019outil sera dessus et r\u00e9alimenteront le travail<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<td style=\"width: 141px;\" valign=\"top\"><span style=\"font-size: 20px;\"><em><span class=\"Style12\" style=\"font-family: times new roman,times,serif;\">On alterne miroir dessus ou dessous pour homog\u00e9n\u00e9iser la forme et ajuster le rayon de courbure.<\/span><\/em><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3459 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni13.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px; text-align: center;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3460 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni16.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 144px; text-align: center;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3461 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni18.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 141px; text-align: center;\">\n<div align=\"center\"><span style=\"font-family: times new roman,times,serif;\">&nbsp;<\/span><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3462 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/Spherometre01.gif\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<\/tr>\n<tr class=\"Style8\" align=\"center\" valign=\"top\">\n<td style=\"width: 120.117px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Lorsque la majorit\u00e9 de la surface des carreaux touche, on adopte des courses normales de 1\/3 de diam\u00e8tre aux formes vari\u00e9es (<a href=\"http:\/\/gap47.astrosurf.com\/index.php\/course-droite\/\" target=\"_blank\" rel=\"noopener noreferrer\">vid\u00e9o1<\/a>) ou (<a href=\"http:\/\/gap47.astrosurf.com\/index.php\/course-en-w\/\" target=\"_blank\" rel=\"noopener noreferrer\">vid\u00e9o2<\/a>) <\/span><\/em><\/span><\/td>\n<td style=\"width: 131.883px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Pour v\u00e9rifier l\u2019avancement du r\u00e9unissage, on quadrille la surface du miroir au feutre ind\u00e9l\u00e9bile \u2026<\/span><\/em><\/span><\/td>\n<td style=\"width: 144px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">\u2026 puis on contr\u00f4le que ces lignes s\u2019effacent de mani\u00e8re homog\u00e8ne sur la totalit\u00e9 de la surface.<\/span><\/em><\/span><\/td>\n<td style=\"width: 141px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On peut aussi contr\u00f4ler au sph\u00e9rom\u00e8tre que la fl\u00e8che est constante du centre jusqu&rsquo;au bord.<\/span><\/em><\/span><\/td>\n<\/tr>\n<tr class=\"Style8\" align=\"center\" valign=\"top\">\n<td style=\"width: 120.117px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3464 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/loupe.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3465 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni20.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 144px;\" valign=\"top\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3466 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni17.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 141px;\" valign=\"middle\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3467 aligncenter\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni19.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<\/tr>\n<tr class=\"Style8\" align=\"center\" valign=\"top\">\n<td style=\"width: 120.117px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On contr\u00f4le avec une loupe puissante (ou \u00e0 l\u2019oculaire) l\u2019\u00e9tat de surface et l\u2019effacement des fractures d\u2019\u00e9bauchage en \u00e9clairant le miroir par en dessous.<\/span><\/em><\/span><\/td>\n<td style=\"width: 131.883px;\">\n<div align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Aspect de l\u2019\u00e9tat de surface \u00e0 l\u2019issue du r\u00e9unissage.<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<td style=\"width: 144px;\">\n<div align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">Si les s\u00e9ances sont espac\u00e9es en temps, on laisse le miroir sur l\u2019outil. Les carreaux de celui-ci ainsi press\u00e9s ne bougeront pas par rapport \u00e0 la forme sph\u00e9rique d\u2019ensemble.<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<td style=\"width: 141px;\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">En fin de session d\u2019abrasif, on proc\u00e8de au nettoyage minutieux de l\u2019outil \u00e0 la douchette et \u00e0 la brosse \u00e0 dents particuli\u00e8rement entre les carreaux de c\u00e9ramique.<\/span><\/em><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 120.117px; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3469\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni21.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/td>\n<td style=\"width: 131.883px;\">\n<div align=\"center\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3468\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/reuni22.jpg\" alt=\"\" width=\"200\" height=\"150\"><\/div>\n<\/td>\n<td style=\"width: 285px;\" colspan=\"2\" rowspan=\"2\" valign=\"top\"><span style=\"font-family: times new roman,times,serif;\">&nbsp;<\/span><\/td>\n<\/tr>\n<tr class=\"Style8\">\n<td style=\"width: 120.117px;\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On retaille un peu la poix (si n\u00e9cessaire)<\/span><\/em><\/span><\/div>\n<\/td>\n<td style=\"width: 131.883px;\">\n<div align=\"center\">\n<p><span style=\"font-size: 20px;\"><em><span style=\"font-family: times new roman,times,serif;\">On repasse enfin une ou deux couches de vernis notamment entre les carr\u00e9s.<\/span><\/em><\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p align=\"justify\">&nbsp;<\/p>\n<table style=\"width: 551.783px;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\">\n<tbody>\n<tr bgcolor=\"#336699\">\n<td style=\"width: 498.783px;\" colspan=\"5\" valign=\"top\">\n<p align=\"center\"><span style=\"font-size: 20px; color: #ffffff;\"><strong><span class=\"Style10\" style=\"font-family: arial,helvetica,sans-serif;\">Pour notre 400 le bilan du r\u00e9unissage s\u2019\u00e9tablit de la fa\u00e7on suivante&nbsp;:<\/span><\/strong><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 267px;\" colspan=\"4\" valign=\"top\">\n<p align=\"center\"><span style=\"font-size: 20px;\"><strong><span style=\"font-family: times new roman,times,serif;\">S\u00e9ch\u00e9es Carbo 120<\/span><\/strong><\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 231.783px;\" valign=\"top\">\n<div align=\"center\"><span style=\"font-size: 20px;\"><strong><span style=\"font-family: times new roman,times,serif;\">Les \u00e9quipes<\/span><\/strong><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Dates<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Nombres Miroir dessus<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Nombres Miroir dessous<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Total des s\u00e9ch\u00e9es<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 231.783px;\" valign=\"top\">\n<div align=\"center\">\n<p><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Pierrot\/Patrick\/Claudius\/Gilbert\/Daniel\/Bertrand Pierre\/Martin\/Romain\/Fran\u00e7ois \/Halim \/Geoffroi \/Eduard\/Guy\/<\/span><\/p>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">24\/11\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">3<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">3<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">6<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 231.783px;\" rowspan=\"10\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: times new roman,times,serif;\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.astrosurf.com\/gap47\/T400\/Optique\/reunissage\/reunir_images\/Trombine01.jpg\" width=\"356\" height=\"245\"><\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">30\/11\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">12<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">3<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">15<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">07\/12\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">14<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">1<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">15<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">08\/12\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">14<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">0<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">14<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">14\/12\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">11<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">0<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">11<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">22\/12\/07<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">10<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">0<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">10<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">04\/01\/08<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">8<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">4<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">12<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">11\/01\/08<\/span><\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">3<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">1<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">4<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"top\">\n<p align=\"right\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">&nbsp;<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">&nbsp;<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">&nbsp;<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" valign=\"top\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">&nbsp;<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; width: 67px;\" valign=\"middle\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">Total<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">75<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 68px;\">\n<p align=\"center\"><span style=\"font-family: 'times new roman', times, serif; font-size: 20px;\">12<\/span><\/p>\n<\/td>\n<td style=\"text-align: center; width: 64px;\" bgcolor=\"#336699\">\n<p class=\"Style8\" align=\"center\"><span style=\"font-family: 'times new roman', times, serif; color: #ffffff; font-size: 20px;\">87<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: left;\" align=\"justify\">&nbsp;<span style=\"font-family: times new roman,times,serif; font-size: 20px;\">ci dessous le tableau original :<\/span><\/p>\n<p style=\"text-align: left;\" align=\"justify\"><span style=\"font-family: times new roman,times,serif; font-size: 20px;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1867 alignleft\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/tableau01.jpg\" alt=\"\" width=\"550\" height=\"375\" srcset=\"https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/tableau01.jpg 790w, https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/tableau01-300x205.jpg 300w, https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/tableau01-768x524.jpg 768w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/> <\/span><\/p>\n<hr>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<p align=\"justify\">&nbsp;<\/p>\n<hr>\n<p style=\"text-align: left;\" align=\"justify\">&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La surface issue de l\u2019\u00e9bauchage pr\u00e9sente des irr\u00e9gularit\u00e9s notables (d\u00e9fauts zonaux, astigmatisme) que l\u2019op\u00e9ration ait \u00e9t\u00e9 men\u00e9e manuellement ou avec l\u2019aide d\u2019une machine. Il convient donc de \u00ab&nbsp;r\u00e9unir&nbsp;\u00bb cette surface pour l\u2019amener vers la meilleure sph\u00e8re possible. On en profitera \u00e9galement pour \u00ab&nbsp;effacer&nbsp;\u00bb les \u00e9cailles profondes qu\u2019un travail d\u2019\u00e9bauchage agressif aura provoqu\u00e9es dans le verre. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;R\u00e9unissage&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":192,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-1750","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\u00e9unissage - L&#039;observatoire est ouvert aux visiteurs tous les vendredis soirs \u00e0 21 heures, jusqu&#039;au 3 juillet 2026 inclus, sans r\u00e9servation.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9unissage - L&#039;observatoire est ouvert aux visiteurs tous les vendredis soirs \u00e0 21 heures, jusqu&#039;au 3 juillet 2026 inclus, sans r\u00e9servation.\" \/>\n<meta property=\"og:description\" content=\"La surface issue de l\u2019\u00e9bauchage pr\u00e9sente des irr\u00e9gularit\u00e9s notables (d\u00e9fauts zonaux, astigmatisme) que l\u2019op\u00e9ration ait \u00e9t\u00e9 men\u00e9e manuellement ou avec l\u2019aide d\u2019une machine. Il convient donc de \u00ab&nbsp;r\u00e9unir&nbsp;\u00bb cette surface pour l\u2019amener vers la meilleure sph\u00e8re possible. On en profitera \u00e9galement pour \u00ab&nbsp;effacer&nbsp;\u00bb les \u00e9cailles profondes qu\u2019un travail d\u2019\u00e9bauchage agressif aura provoqu\u00e9es dans le verre. &hellip; Continuer la lecture de &laquo;&nbsp;R\u00e9unissage&nbsp;&raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/\" \/>\n<meta property=\"og:site_name\" content=\"L&#039;observatoire est ouvert aux visiteurs tous les vendredis soirs \u00e0 21 heures, jusqu&#039;au 3 juillet 2026 inclus, sans r\u00e9servation.\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/astrogap47\/\" \/>\n<meta property=\"article:modified_time\" content=\"2019-12-17T16:20:12+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2017\/06\/Reuni01-1.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/\",\"url\":\"https:\/\/gap47.astrosurf.com\/index.php\/technique\/optique-instruments\/optique\/reunissage\/\",\"name\":\"R\u00e9unissage - 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