{"id":62366,"date":"2026-10-15T18:54:16","date_gmt":"2026-10-15T18:54:16","guid":{"rendered":"https:\/\/italian-riviera.com\/?post_type=approfondimento&#038;p=62366"},"modified":"2026-10-15T18:56:28","modified_gmt":"2026-10-15T18:56:28","slug":"observatoire-cassini","status":"publish","type":"approfondimento","link":"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/perinaldo\/observatoire-cassini\/","title":{"rendered":"Observatoire Cassini de Perinaldo"},"content":{"rendered":"<p>L&rsquo;Observatoire Cassini est la raison pour laquelle beaucoup viennent \u00e0 <a href=\"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/perinaldo\/\">Perinaldo<\/a>. Il se trouve sur le toit de la mairie, l&rsquo;ancien couvent de San Sebastiano, et rend hommage \u00e0 Giovanni Domenico Cassini, n\u00e9 au village en 1625. Les informations en ligne sont souvent anciennes ou confuses : voici ce qui est confirm\u00e9 pour 2026, comment r\u00e9server et que regarder quand le ciel est couvert.<\/p>\n<ul>\n<li><strong>O\u00f9 :<\/strong> piazza Mons. A. Rossi 1, Perinaldo (mairie)<\/li>\n<li><strong>Visite :<\/strong> uniquement lors d&rsquo;\u00e9v\u00e9nements, r\u00e9servation en ligne obligatoire<\/li>\n<li><strong>Tarifs g\u00e9n\u00e9raux :<\/strong> adultes 15 euros, enfants de moins de 13 ans 10 euros (chaque \u00e9v\u00e9nement peut diff\u00e9rer)<\/li>\n<li><strong>Quand :<\/strong> soir\u00e9es publiques surtout de juillet \u00e0 septembre ; \u00e0 la mi-octobre 2026 le calendrier \u00e9tait vide<\/li>\n<li><strong>Gestionnaire :<\/strong> Orbita APS, pour la commune<\/li>\n<li><strong>Dur\u00e9e :<\/strong> selon l&rsquo;\u00e9v\u00e9nement : v\u00e9rifie la fiche de l&rsquo;\u00e9v\u00e9nement<\/li>\n<\/ul>\n<h2>Qui \u00e9tait Cassini<\/h2>\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" width=\"1024\" height=\"683\" src=\"https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina-1024x683.jpg\" class=\"wp-image-62509\" alt=\"Perinaldo e il campanile sulla collina\" decoding=\"async\" srcset=\"https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina-1024x683.jpg 1024w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina-300x200.jpg 300w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina-768x512.jpg 768w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina-1536x1024.jpg 1536w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-e-il-campanile-sulla-collina.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>Giovanni Domenico Cassini est n\u00e9 \u00e0 Perinaldo le 8 juin 1625 et mort \u00e0 Paris le 14 septembre 1712. Il enseigna l&rsquo;astronomie \u00e0 Bologne, dirigea l&rsquo;Observatoire de Paris d\u00e8s 1671 et fut naturalis\u00e9 fran\u00e7ais en 1673. Il d\u00e9couvrit quatre satellites de Saturne (Japet, Rh\u00e9a, Dion\u00e9 et T\u00e9thys) et la division des anneaux qui porte son nom ; avec Hooke, il observa la Grande Tache rouge de Jupiter. Deux ast\u00e9ro\u00efdes portent les noms 24101 Cassini et 7556 Perinaldo.<\/p>\n<p>2025 a marqu\u00e9 les 400 ans de sa naissance, avec un comit\u00e9 national du minist\u00e8re de la Culture. Un timbre comm\u00e9moratif est sorti le 8 juin 2025, avec oblit\u00e9ration du premier jour au bureau de poste de Perinaldo. Son neveu et assistant fut Giacomo Filippo Maraldi.<\/p>\n<h2>L&rsquo;observatoire<\/h2>\n<figure class=\"wp-block-image size-large\"><img width=\"1024\" height=\"768\" src=\"https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto-1024x768.jpg\" class=\"wp-image-62257\" alt=\"Perinaldo al tramonto\" decoding=\"async\" srcset=\"https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto-1024x768.jpg 1024w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto-300x225.jpg 300w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto-768x576.jpg 768w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto-1536x1152.jpg 1536w, https:\/\/italian-riviera.com\/wp-content\/uploads\/2026\/10\/perinaldo-al-tramonto.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>L&rsquo;observatoire communal a ouvert en 1989. Sa coupole de 3 m\u00e8tres abrite un r\u00e9flecteur newtonien de 380 mm et six personnes au plus ; une salle contient un t\u00e9lescope de 356 mm pour plan\u00e8tes et \u00e9toiles doubles. Lors des soir\u00e9es publiques, des t\u00e9lescopes portables sont install\u00e9s sur la place, et par mauvais temps la soir\u00e9e passe au plan\u00e9tarium. Depuis 2020, Orbita APS g\u00e8re le site et a ajout\u00e9 une seconde coupole, des instruments solaires et une salle de r\u00e9alit\u00e9 virtuelle.<\/p>\n<p>La photo ci-dessus montre le village au coucher du soleil, pas l&rsquo;observatoire.<\/p>\n<h3>Comment r\u00e9server<\/h3>\n<p>En 2026, le gestionnaire indique que l&rsquo;observatoire se visite uniquement lors d&rsquo;\u00e9v\u00e9nements. La r\u00e9servation en ligne est obligatoire et bloque la place ; le paiement se fait sur place sauf indication contraire. Les tarifs g\u00e9n\u00e9raux sont de 15 euros pour les adultes et 10 euros pour les enfants de moins de 13 ans, mais chaque \u00e9v\u00e9nement peut fixer son prix. La carte d&rsquo;adh\u00e9rent (5 euros par personne ou famille) est d\u00e9crite de fa\u00e7on incoh\u00e9rente selon les pages : v\u00e9rifie la fiche de l&rsquo;\u00e9v\u00e9nement. Le calendrier est sur le <a href=\"https:\/\/www.flyorbita.com\/events\" target=\"_blank\" rel=\"noopener\">site d&rsquo;Orbita<\/a>. Les visites priv\u00e9es et scolaires se demandent directement au gestionnaire.<\/p>\n<h3>Quand y aller<\/h3>\n<p>En 2026, les soir\u00e9es publiques se sont concentr\u00e9es de juillet \u00e0 septembre : Deep Sky Night, Voyage dans la Voie lact\u00e9e, En attendant les Pers\u00e9ides, les nuits de la Lune et, le 12 septembre, Vers Saturne. L&rsquo;\u00e9v\u00e9nement de l&rsquo;\u00e9quinoxe de printemps a eu lieu le 21 mars. Les dates 2027 ne sont pas confirm\u00e9es. Le gestionnaire annonce chaque jour \u00e0 18 h si la soir\u00e9e est maintenue ou annul\u00e9e ; la confirmation ne garantit pas un ciel d\u00e9gag\u00e9.<\/p>\n<h2>Le mus\u00e9e Cassini<\/h2>\n<p>Le mus\u00e9e, dans le m\u00eame b\u00e2timent, a \u00e9t\u00e9 ouvert par la commune en 1997. Il pr\u00e9sente documents, notes d&rsquo;observation, dessins, lettres et portraits dans dix vitrines th\u00e9matiques, un arbre g\u00e9n\u00e9alogique des familles Cassini et Maraldi et des panneaux sur l&rsquo;astronomie et les missions spatiales. Une fiche du minist\u00e8re de la Culture de 2020 indique les matins en semaine, mais le gestionnaire parle de visites lors des \u00e9v\u00e9nements seulement. Horaires 2026 et prix ne sont pas confirm\u00e9s : renseigne-toi aupr\u00e8s du bureau d&rsquo;information, t\u00e9l. +39 380 4761705, avant de monter.<\/p>\n<h2>Le cadran solaire de la Visitation<\/h2>\n<p>L&rsquo;\u00e9glise de la Visitation, \u00e0 l&rsquo;entr\u00e9e du village, abrite un cadran solaire \u00e0 chambre noire de 2007. Un trou de 15 mm projette l&rsquo;image du Soleil sur une ligne d&rsquo;environ 20 m\u00e8tres, que le disque lumineux traverse \u00e0 midi solaire. Il a \u00e9t\u00e9 con\u00e7u par Giancarlo Bonini avec l&rsquo;association Stellaria. On raconte que l&rsquo;\u00e9glise est orient\u00e9e sur le m\u00e9ridien gr\u00e2ce \u00e0 Cassini, mais il n&rsquo;y a aucun document, et la ligne s&rsquo;\u00e9carte aujourd&rsquo;hui d&rsquo;environ 6,5 degr\u00e9s.<\/p>\n<h2>Le syst\u00e8me solaire de la via Cassini<\/h2>\n<p>Le long de la via Cassini, fresques et panneaux forment un syst\u00e8me solaire \u00e0 l&rsquo;\u00e9chelle. Pas d&rsquo;horaires, pas de billet : on marche et on lit. \u00c7a marche bien avec les enfants, et comme \u00e9chauffement avant la soir\u00e9e.<\/p>\n<h2>Deux erreurs fr\u00e9quentes<\/h2>\n<ul>\n<li>Un site web et un num\u00e9ro de t\u00e9l\u00e9phone figurant dans d&rsquo;anciennes fiches m\u00e8nent \u00e0 une autre association, bas\u00e9e dans une autre commune. Le gestionnaire de l&rsquo;observatoire de Perinaldo est Orbita.<\/li>\n<li>Le Castello Maraldi, li\u00e9 par tradition \u00e0 la naissance de Cassini, est une r\u00e9sidence priv\u00e9e : on ne le voit que de l&rsquo;ext\u00e9rieur.<\/li>\n<\/ul>\n<h2>\u00c0 combiner avec<\/h2>\n<p>Le lendemain de la soir\u00e9e, descends \u00e0 <a href=\"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/apricale\/\">Apricale<\/a> \u00e0 pied ou en voiture, poursuis vers <a href=\"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/dolceacqua\/\">Dolceacqua<\/a> et termine au bord de la mer \u00e0 <a href=\"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/bordighera\/\">Bordighera<\/a> ou <a href=\"https:\/\/italian-riviera.com\/fr\/riviera-di-ponente\/ventimiglia\/\">Vintimille<\/a>.<\/p>\n<h2>Questions fr\u00e9quentes sur l&rsquo;Observatoire Cassini<\/h2>\n<p><strong>Puis-je venir sans r\u00e9server ?<\/strong><\/p>\n<p>Non. La r\u00e9servation en ligne est obligatoire pour tous les \u00e9v\u00e9nements et bloque la place.<\/p>\n<p><strong>Peut-on visiter l&rsquo;hiver ?<\/strong><\/p>\n<p>Cela d\u00e9pend du calendrier. \u00c0 la mi-octobre 2026, rien n&rsquo;\u00e9tait pr\u00e9vu, et les dates d&rsquo;hiver et de 2027 ne sont pas confirm\u00e9es.<\/p>\n<p><strong>Est-ce adapt\u00e9 aux enfants ?<\/strong><\/p>\n<p>Oui : les tarifs g\u00e9n\u00e9raux pr\u00e9voient un prix r\u00e9duit avant 13 ans. V\u00e9rifie sur la fiche de l&rsquo;\u00e9v\u00e9nement si l&rsquo;\u00e2ge convient.<\/p>\n<p><strong>Et si le ciel est nuageux ?<\/strong><\/p>\n<p>Le gestionnaire utilise le plan\u00e9tarium par mauvais temps. V\u00e9rifie \u00e0 18 h si l&rsquo;\u00e9v\u00e9nement est maintenu.<\/p>\n<p><strong>Le mus\u00e9e est-il ouvert toute l&rsquo;ann\u00e9e ?<\/strong><\/p>\n<p>Nous n&rsquo;avons pas d&rsquo;horaires 2026 confirm\u00e9s. Demande au bureau d&rsquo;information avant de monter.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Visiter l&rsquo;observatoire en 2026 : r\u00e9servation en ligne, tarifs g\u00e9n\u00e9raux, calendrier, mus\u00e9e et cadran solaire.<\/p>\n","protected":false},"featured_media":62504,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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