{"id":14908,"date":"2021-10-30T13:48:54","date_gmt":"2021-10-30T13:48:54","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=14908"},"modified":"2021-11-13T11:02:34","modified_gmt":"2021-11-13T11:02:34","slug":"observatoire-des-baronnies-provencales-lastronomie-en-xxl","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/10\/30\/observatoire-des-baronnies-provencales-lastronomie-en-xxl\/","title":{"rendered":"Observatoire des Baronnies Proven\u00e7ales\u00a0: l&#8217;astronomie en XXL"},"content":{"rendered":"<p><strong>L&#8217;Observatoire des Baronnies Proven\u00e7ales offre des prestations in\u00e9dites dans un cadre remarquable. R\u00e9cit au plus pr\u00e8s des \u00e9toiles.<\/strong><\/p>\n<h5>Un g\u00eete sous la Voie lact\u00e9e :<\/h5>\n<p>L&#8217;histoire d\u00e9bute en 2006, lorsque H\u00e9l\u00e8ne et Marc Bretton posent leurs valises au Mas des Gr\u00e8s \u00e0 Moydans (05) dans les Hautes-Alpes. Ce n&#8217;est \u00e0 l&#8217;\u00e9poque qu&#8217;une exploitation agricole, mais le couple y voit d\u00e9j\u00e0 le point de d\u00e9part d&#8217;une extraordinaire aventure. Attir\u00e9s par le potentiel nocturne des lieux, loin de toute <a href=\"https:\/\/www.futura-sciences.com\/sciences\/questions-reponses\/espace-quest-ce-pollution-lumineuse-12\/\" target=\"_blank\" rel=\"noopener\">pollution lumineuse<\/a>, ils envisagent d&#8217;y cr\u00e9er une structure \u00e0 vocation astronomique et touristique, l&#8217;Observatoire des Baronnies Proven\u00e7ales (<a href=\"http:\/\/www.obs-bp.com\/\" target=\"_blank\" rel=\"noopener\">OBP<\/a>).<\/p>\n<figure id=\"attachment_14909\" aria-describedby=\"caption-attachment-14909\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14909\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2-450x228.jpg\" alt=\"\" width=\"450\" height=\"228\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2-450x228.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2-1024x518.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2-768x389.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp2.jpg 1447w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14909\" class=\"wp-caption-text\">Situation g\u00e9ographique de l&#8217;Observatoire des Baronnies Proven\u00e7ales. \u00a9 Google Maps<\/figcaption><\/figure>\n<p>Quelques ann\u00e9es plus tard, la ferme transform\u00e9e en g\u00eete accueille les amoureux des \u00e9toiles. Un b\u00e2timent scientifique a pris place \u00e0 c\u00f4t\u00e9. Outre des salles de travail et de vie commune, il est \u00e9quip\u00e9 d&#8217;une coupole abritant un superbe t\u00e9lescope de 80 centim\u00e8tres de diam\u00e8tre (T800). Diff\u00e9rentes terrasses permettent d&#8217;installer des instruments astronomiques.<\/p>\n<figure id=\"attachment_14917\" aria-describedby=\"caption-attachment-14917\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14917\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1-1024x615.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp1.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14917\" class=\"wp-caption-text\">La Voie lact\u00e9e en majest\u00e9 au-dessus de la coupole de l&#8217;OBP. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Avec en moyenne 240 nuits claires par an, certains passionn\u00e9s ont vite compris tout l&#8217;int\u00e9r\u00eat de ce site. Ils y ont fix\u00e9 leur t\u00e9lescope \u00e0 demeure et le pilotent \u00e0 distance depuis chez eux. Deux techniciens salari\u00e9s de l&#8217;Observatoire ont en charge la maintenance de ce mat\u00e9riel. Ils sont \u00e9galement l\u00e0 pour assurer la bonne marche de plusieurs t\u00e9lescopes priv\u00e9s charg\u00e9s de la surveillance spatiale. \u00c0 l&#8217;<a href=\"http:\/\/www.obs-bp.com\/\" target=\"_blank\" rel=\"noopener\">OBP<\/a>, on veille \u00e0 ce que les co\u00fbteux satellites en orbite ne fassent pas de mauvaises rencontres&#8230;<!--more--><\/p>\n<h5>Assurance m\u00e9t\u00e9o :<\/h5>\n<p>Cela fait plusieurs ann\u00e9es que je vais visiter des sites astronomiques remarquables, des d\u00e9couvertes que je vous fais partager sur CIELMANIA. L&#8217;Observatoire des Baronnies Proven\u00e7ales \u00e9tait not\u00e9 sur mon agenda depuis un certain temps. De passage dans la r\u00e9gion, Christine et moi-m\u00eame avons contact\u00e9 Marc Bretton pour venir lui rendre visite.<\/p>\n<figure id=\"attachment_14916\" aria-describedby=\"caption-attachment-14916\" style=\"width: 338px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14916\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5-338x450.jpg\" alt=\"\" width=\"338\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5-338x450.jpg 338w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5-769x1024.jpg 769w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5-768x1023.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp5.jpg 901w\" sizes=\"auto, (max-width: 338px) 100vw, 338px\" \/><\/a><figcaption id=\"caption-attachment-14916\" class=\"wp-caption-text\">Marc Bretton aux commandes d&#8217;une lunette solaire sur l&#8217;une des terrasses de l&#8217;OBP. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Il nous a propos\u00e9 d&#8217;accompagner un groupe inscrit \u00e0 une immersion astronomique au T800 pour une nuit. L&#8217;arriv\u00e9e est pr\u00e9vue en d\u00e9but d&#8217;apr\u00e8s-midi. Le ciel est magnifique en cette derni\u00e8re semaine du mois d&#8217;octobre. Marc, qui nous accueille avec un caf\u00e9, nous explique que les visiteurs ont toujours du beau temps gr\u00e2ce \u00e0 l&#8217;assurance m\u00e9t\u00e9o, un des atouts de l&#8217;OBP. Trois jours avant le d\u00e9but de chaque cession astronomique, il fait un point m\u00e9t\u00e9o complet. Si les conditions ne sont pas propices aux observations, le s\u00e9jour est report\u00e9 \u00e0 une date ult\u00e9rieure. Une assurance qu&#8217;on ne trouve pas dans d&#8217;autres structures d&#8217;accueil astronomiques \u00e9quivalentes.<\/p>\n<figure id=\"attachment_14928\" aria-describedby=\"caption-attachment-14928\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14928\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13-450x318.jpg\" alt=\"\" width=\"450\" height=\"318\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13-450x318.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13-1024x723.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13-768x542.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/photo13.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14928\" class=\"wp-caption-text\">Le site de l&#8217;Observatoire des Baronnies Proven\u00e7ales avec le g\u00eete \u00e0 gauche, la coupole et le b\u00e2timent scientifique \u00e0 droite. \u00a9 Christine Sasiad<\/figcaption><\/figure>\n<p>Pendant que Christine fait un croquis, j&#8217;admire le paysage flamboyant de l&#8217;automne ainsi que quelques rapaces qui planent majestueusement au-dessus de la coupole du T800.<\/p>\n<h5>Un astrophysicien comme accompagnateur :<\/h5>\n<p>Il est 15 heures, le s\u00e9jour peut commencer. Avec nous, deux couples et un grand-p\u00e8re passionn\u00e9 qui est venu avec ses deux petits-fils adolescents. C&#8217;est Ana\u00ebl, l&#8217;un des deux astrophysiciens salari\u00e9s, qui sera notre guide.<\/p>\n<figure id=\"attachment_14910\" aria-describedby=\"caption-attachment-14910\" style=\"width: 337px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14910\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6-337x450.jpg\" alt=\"\" width=\"337\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6-337x450.jpg 337w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6-767x1024.jpg 767w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6-768x1025.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp6.jpg 899w\" sizes=\"auto, (max-width: 337px) 100vw, 337px\" \/><\/a><figcaption id=\"caption-attachment-14910\" class=\"wp-caption-text\">Le programme-type d&#8217;une immersion \u00e0 l&#8217;OBP a de quoi satisfaire le plus exigeant des astronomes. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>\u00c0 l&#8217;<a href=\"http:\/\/www.obs-bp.com\/\" target=\"_blank\" rel=\"noopener\">OBP<\/a>, on privil\u00e9gie un accueil de qualit\u00e9 : chaque petit groupe fait son s\u00e9jour avec un encadrant professionnel. Le programme de cette immersion astronomique s&#8217;annonce particuli\u00e8rement all\u00e9chant : observations du Soleil, d\u00e9couverte des installations et du T800, mesure du transit d&#8217;une exoplan\u00e8te en d\u00e9but de soir\u00e9e suivie d&#8217;observations nocturnes.<\/p>\n<figure id=\"attachment_14913\" aria-describedby=\"caption-attachment-14913\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14913\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp7.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14913\" class=\"wp-caption-text\">Observations solaires sur la terrasse de l&#8217;OBP. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Ana\u00ebl fait d\u00e9couvrir aux visiteurs notre \u00e9toile sous toutes ses coutures : taches, protub\u00e9rances et spectres solaires se d\u00e9voilent \u00e0 travers diff\u00e9rents mat\u00e9riels. L&#8217;astrophysicien nous entra\u00eene ensuite dans un b\u00e2timent o\u00f9 sont rang\u00e9s des instruments. Certains sont particuli\u00e8rement impressionnants et rares. On peut citer la grande lunette dont l&#8217;objectif de 28 centim\u00e8tres de diam\u00e8tre a \u00e9t\u00e9 r\u00e9alis\u00e9 en 1863 par l&#8217;astronome et opticien am\u00e9ricain <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Alvan_Clark\" target=\"_blank\" rel=\"noopener\">Alvan Clark<\/a>.<\/p>\n<figure id=\"attachment_14912\" aria-describedby=\"caption-attachment-14912\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14912\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp8.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14912\" class=\"wp-caption-text\">La grande lunette de l&#8217;OBP (dont l&#8217;optique a \u00e9t\u00e9 taill\u00e9e en 1863 par Alvan Clark) derri\u00e8re Ana\u00ebl qui tient une reproduction de la lunette de Galil\u00e9e. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Je suis \u00e9galement subjugu\u00e9 par une immense paire de jumelles : chacun des objectifs a un diam\u00e8tre de 21 centim\u00e8tres, une cr\u00e9ation de Serge Deconihout.<\/p>\n<h5>Le t\u00e9lescope de 80 centim\u00e8tres\u00a0:<\/h5>\n<p>Le Soleil n&#8217;est pas encore couch\u00e9 lorsque nous nous retrouvons au pied du T800. Apr\u00e8s avoir visit\u00e9 la salle de commandes digne de celles que l&#8217;on rencontre dans un observatoire professionnel, nous d\u00e9couvrons l&#8217;imposant instrument \u00e0 l&#8217;\u00e9tage sup\u00e9rieur de la coupole.<\/p>\n<figure id=\"attachment_14914\" aria-describedby=\"caption-attachment-14914\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14914\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp9.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14914\" class=\"wp-caption-text\">Le T800, fleuron de l&#8217;Observatoire des Baronnies Proven\u00e7ales. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Il s&#8217;agit d&#8217;un t\u00e9lescope de type Nasmyth. Son principe optique a \u00e9t\u00e9 imagin\u00e9 en 1845 par l&#8217;\u00e9cossais James Nasmyth. Gr\u00e2ce \u00e0 un miroir suppl\u00e9mentaire qui renvoie la lumi\u00e8re lat\u00e9ralement, l&#8217;astronome observe toujours dans la m\u00eame position, quelle que soit la zone de ciel vis\u00e9e. Un confort qui \u00e9vite de se retrouver perch\u00e9 sur un escabeau dans le noir&#8230; Malgr\u00e9 la pr\u00e9sence du Soleil, nous admirons avec un grossissement de 200 fois le Quartier de V\u00e9nus, les anneaux de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/09\/17\/saturne-la-planete-qui-fait-naitre-des-vocations\/\" target=\"_blank\" rel=\"noopener\">Saturne<\/a>, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/09\/15\/en-video-un-petit-corps-celeste-entre-en-collision-avec-jupiter\/\" target=\"_blank\" rel=\"noopener\">Jupiter<\/a> et ses satellites ainsi que quelques \u00e9toiles doubles remarquables.<\/p>\n<figure id=\"attachment_14915\" aria-describedby=\"caption-attachment-14915\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14915\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10-768x460.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp10.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14915\" class=\"wp-caption-text\">Apr\u00e8s avoir observ\u00e9 le Quartier de V\u00e9nus dans le grand t\u00e9lescope, les participants tentent de rep\u00e9rer la plan\u00e8te en plein jour \u00e0 l&#8217;\u0153il nu. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Nous nous attardons longuement sur <em>Epsilon Lyrae<\/em>, un syst\u00e8me multiple constitu\u00e9 de deux couples stellaires dans la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/07\/24\/en-video-partez-a-la-decouverte-du-triangle-dete\/\" target=\"_blank\" rel=\"noopener\">constellation de la Lyre<\/a>. Observer ces quatre diamants scintillants en plein jour est tout \u00e0 fait \u00e9tonnant. Une performance que l&#8217;on doit \u00e0 la qualit\u00e9 du t\u00e9lescope et \u00e0 la transparence du ciel. Quant \u00e0 la stabilit\u00e9 de l&#8217;atmosph\u00e8re, elle est prometteuse : pour utiliser un langage d&#8217;astronome, le <em>seeing<\/em> est tr\u00e8s bon !<\/p>\n<h5>Nuit \u00e9toil\u00e9e\u00a0:<\/h5>\n<p>Concoct\u00e9 par la cuisini\u00e8re japonaise Motoko, l&#8217;excellent souper est l&#8217;occasion de nombreux \u00e9changes entre les participants. Mais \u00e0 l&#8217;OBP, le ciel \u00e9toil\u00e9 n&#8217;attend pas. Bien couverts, nous sortons sous la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/08\/26\/en-video-quest-ce-que-la-voie-lactee\/\" target=\"_blank\" rel=\"noopener\">Voie lact\u00e9e<\/a>. Le ciel est incroyablement sombre et l&#8217;\u0153il accoutum\u00e9 en r\u00e9v\u00e8le toute la richesse. Dans la constellation d&#8217;Androm\u00e8de, la forme allong\u00e9e de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/09\/le-telescope-hubble-zoome-sur-la-galaxie-d-andromede\/\" target=\"_blank\" rel=\"noopener\">Messier 31<\/a> se rep\u00e8re sans difficult\u00e9.<\/p>\n<figure id=\"attachment_14918\" aria-describedby=\"caption-attachment-14918\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14918\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp12.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14918\" class=\"wp-caption-text\">La galaxie d&#8217;Androm\u00e8de (en haut \u00e0 droite de la Voie lact\u00e9e) est bien visible depuis l&#8217;Observatoire. L&#8217;amas des Pl\u00e9iades se l\u00e8ve sur l&#8217;horizon. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>C&#8217;est \u00e0 quelques encablures de cette c\u00e9l\u00e8bre galaxie que se trouve l&#8217;\u00e9toile autour de laquelle gravite Qatar-4b. Le transit de cette exoplan\u00e8te (de type <a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/exoplanete-jupiter-chaud-4726\/\" target=\"_blank\" rel=\"noopener\">Jupiter chaud<\/a>) a commenc\u00e9, enregistr\u00e9 automatiquement par l&#8217;un des t\u00e9lescopes de l&#8217;Observatoire. La baisse de la courbe de luminosit\u00e9 de l&#8217;\u00e9toile prend forme lentement sur l&#8217;un des \u00e9crans de la salle de contr\u00f4le.<\/p>\n<figure id=\"attachment_14919\" aria-describedby=\"caption-attachment-14919\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14919\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp11.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14919\" class=\"wp-caption-text\">La salle de contr\u00f4le du grand t\u00e9lescope de l&#8217;OBP. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>D\u00e9laissant les ordinateurs, nous retournons sur la terrasse. Ana\u00ebl se fait montreur d&#8217;\u00e9toiles avec son laser, nous contant l&#8217;histoire tourment\u00e9e des constellations. Dans l&#8217;immense paire de jumelles, l&#8217;impression de relief est saisissante sur Jupiter et Saturne. Un instrument formidable pour explorer le ciel des Baronnies.<\/p>\n<figure id=\"attachment_14920\" aria-describedby=\"caption-attachment-14920\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4.jpg\" rel=\"lightbox[14908]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14920\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4-450x269.jpg\" alt=\"\" width=\"450\" height=\"269\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4-450x269.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4-1024x613.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4-768x460.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/obp4.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14920\" class=\"wp-caption-text\">Une paire de jumelles g\u00e9antes sous une belle Voie lact\u00e9e. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Amas d&#8217;\u00e9toiles, n\u00e9buleuses, galaxies, rien n&#8217;est inaccessible dans un tel site. \u00c0 l&#8217;Observatoire des Baronnies Proven\u00e7ales, l&#8217;astronomie prend une toute autre dimension !<\/p>\n<p><strong>Remerciements<\/strong> \u00e0 Marc Bretton et \u00e0 son \u00e9quipe pour leur accueil et leur disponibilit\u00e9. Je vous encourage \u00e0 consulter le <a href=\"http:\/\/www.obs-bp.com\/\" target=\"_blank\" rel=\"noopener\">site internet de l&#8217;OBP<\/a> pour y d\u00e9couvrir les offres de s\u00e9jours, une excellente id\u00e9e de cadeau \u00e0 (s&#8217;)offrir.<\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/04\/26\/pour-fuir-les-lumieres-un-amateur-invente-un-observatoire-mobile\/\" target=\"_blank\" rel=\"noopener\">Un astronome amateur invente un observatoire mobile<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/03\/11\/les-tresors-photographiques-oublies-de-lobservatoire-de-copenhague\/\" target=\"_blank\" rel=\"noopener\">Les tr\u00e9sors oubli\u00e9s de l&#8217;Observatoire de Copenhague<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/02\/04\/orage-sur-lobservatoire-de-kitt-peak-lhistoire-dun-celebre-cliche\/\" target=\"_blank\" rel=\"noopener\">Orage sur l&#8217;Observatoire de Kitt Peak, l&#8217;histoire d&#8217;un c\u00e9l\u00e8bre clich\u00e9<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0ou\u00a0<a href=\"https:\/\/twitter.com\/cielmania\" target=\"_blank\" rel=\"noopener noreferrer\">Twitter<\/a>.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>L&#8217;Observatoire des Baronnies Proven\u00e7ales offre des prestations in\u00e9dites dans un cadre remarquable. R\u00e9cit au plus pr\u00e8s des \u00e9toiles. Un g\u00eete sous la Voie lact\u00e9e : L&#8217;histoire d\u00e9bute en 2006, lorsque H\u00e9l\u00e8ne et Marc Bretton posent leurs valises au Mas des Gr\u00e8s \u00e0 Moydans (05) dans les Hautes-Alpes. Ce n&#8217;est \u00e0 l&#8217;\u00e9poque qu&#8217;une exploitation agricole, mais &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/10\/30\/observatoire-des-baronnies-provencales-lastronomie-en-xxl\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Observatoire des Baronnies Proven\u00e7ales\u00a0: l&#8217;astronomie en XXL<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":14911,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[3121],"class_list":["post-14908","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-observatoire-des-baronnies-provencales"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Observatoire des Baronnies Proven\u00e7ales\u00a0: l&#039;astronomie en XXL<\/title>\n<meta name=\"description\" content=\"L&#039;Observatoire des Baronnies Proven\u00e7ales offre des prestations in\u00e9dites dans un cadre remarquable. 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