{"id":50581,"date":"2026-01-26T00:53:49","date_gmt":"2026-01-25T23:53:49","guid":{"rendered":"https:\/\/kart.no\/produkt\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\/"},"modified":"2026-01-26T00:53:49","modified_gmt":"2026-01-25T23:53:49","slug":"practice-bubble-horizon-artificial-horizon-for-sextant-navigation","status":"publish","type":"product","link":"https:\/\/kart.no\/en\/produkt\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\/","title":{"rendered":"Practice Bubble Horizon &#8211; Artificial Horizon for Sextant Navigation"},"content":{"rendered":"<p data-start=\"601\" data-end=\"861\"><strong data-start=\"601\" data-end=\"752\">Practice Bubble Horizon is a sextant accessory that makes it possible to practice astronomical navigation without having a natural horizon available.<\/strong>  The instrument acts as an artificial horizon and is mounted on the sextant instead of the usual telescope.<\/p>\n<p data-start=\"863\" data-end=\"1282\">In normal sextant navigation, the navigator needs to be able to see both the celestial body and the natural horizon to measure the angle between them. When the horizon is not available &#8211; for example during training on land or in areas where the horizon is not clear &#8211; a <strong data-start=\"1131\" data-end=\"1149\">bubble horizon<\/strong> can be used instead. The built-in bubble acts as a reference point and makes it possible to make observations and practice the technique.  <\/p>\n<p data-start=\"1284\" data-end=\"1496\">Practice Bubble Horizon is designed specifically for <strong data-start=\"1333\" data-end=\"1385\">training and teaching astronomical navigation<\/strong>. The instrument makes it possible to practice observing, reading and handling the sextant without being at sea. <\/p>\n<p data-start=\"1498\" data-end=\"1744\">However, somewhat lower accuracy must be expected compared to observations against a natural horizon. For this reason, this type of artificial horizon is primarily used for <strong data-start=\"1668\" data-end=\"1701\">exercises, courses and teaching<\/strong>, and not for practical navigation at sea. <\/p>\n<p data-start=\"1746\" data-end=\"1914\">The bubble horizon is mounted on the sextant instead of the telescope and can be used with a range of sextants, including models from <strong data-start=\"1880\" data-end=\"1913\">Celestaire and Cassens &amp; Plath<\/strong>.<\/p>\n<p data-start=\"1916\" data-end=\"2087\">This makes the Practice Bubble Horizon a useful accessory for navigation courses, teaching and for sailors who want to practice using the sextant before observations at sea.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong data-start=\"371\" data-end=\"464\">Practice Bubble Horizon is a training instrument for astronomical navigation with a sextant.<\/strong>  The artificial horizon makes it possible to practice sextant observations without a natural horizon being visible.<\/p>\n","protected":false},"featured_media":42708,"comment_status":"open","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":""},"product_brand":[1380],"product_cat":[1101],"product_tag":[],"class_list":["post-50581","product","type-product","status-publish","has-post-thumbnail","product_brand-celestaire","product_cat-accessories-for-sextants","product_shipping_class-boxship","pa_produsent-celestaire","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"composite_virtual":false,"composite_layout":"","composite_add_to_cart_form_location":"","composite_editable_in_cart":false,"composite_sold_individually_context":"","composite_shop_price_calc":"","composite_components":[],"composite_scenarios":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Practice Bubble Horizon - artificial horizon for sextant navigation<\/title>\n<meta name=\"description\" content=\"Practice Bubble Horizon is an artificial horizon for training in astronomical navigation with a sextant. Used together with sextants from Celestaire and Cassens &amp; Plath, among others.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kart.no\/en\/produkt\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Practice Bubble Horizon - Artificial Horizon for Sextant Navigation\" \/>\n<meta property=\"og:description\" content=\"Practice Bubble Horizon is an artificial horizon for training in astronomical navigation with a sextant. Used together with sextants from Celestaire and Cassens &amp; Plath, among others.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kart.no\/en\/produkt\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\/\" \/>\n<meta property=\"og:site_name\" content=\"Kart.no\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/kart.no\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kart.no\/wp-content\/uploads\/2026\/01\/Practice-Bubble-Horizon.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1367\" \/>\n\t<meta property=\"og:image:height\" content=\"1367\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\\\/\",\"url\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\\\/\",\"name\":\"Practice Bubble Horizon - artificial horizon for sextant navigation\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/practice-bubble-horizon-artificial-horizon-for-sextant-navigation\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/kart.no\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/Practice-Bubble-Horizon.jpg\",\"datePublished\":\"2026-01-25T23:53:49+00:00\",\"description\":\"Practice Bubble Horizon is an artificial horizon for training in astronomical navigation with a sextant. 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