{"id":50574,"date":"2026-01-26T00:53:47","date_gmt":"2026-01-25T23:53:47","guid":{"rendered":"https:\/\/kart.no\/produkt\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\/"},"modified":"2026-01-26T00:53:47","modified_gmt":"2026-01-25T23:53:47","slug":"celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant","status":"publish","type":"product","link":"https:\/\/kart.no\/en\/produkt\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\/","title":{"rendered":"Celestaire Extra Whole Horizon Mirror &#8211; spare mirror for Astra sextant"},"content":{"rendered":"<p data-start=\"97\" data-end=\"370\"><strong data-start=\"97\" data-end=\"138\">The Celestaire Extra Whole Horizon Mirror<\/strong> is a spare mirror for <strong data-start=\"162\" data-end=\"182\">Astra sextants<\/strong> used for <strong data-start=\"198\" data-end=\"224\">astronomical navigation<\/strong>. The mirror is a Whole Horizon mirror and fits models such as <strong data-start=\"314\" data-end=\"339\">Celestaire Astra IIIB<\/strong> and <strong data-start=\"343\" data-end=\"369\">Astra III Professional<\/strong>. <\/p>\n<p data-start=\"372\" data-end=\"647\">When <strong data-start=\"376\" data-end=\"403\">navigating with a sextant<\/strong>, the horizon mirror is an important optical component. In a maritime environment, mirrors can be affected by salt, moisture and wear over time, and it may therefore be necessary to replace the mirror to maintain good optical quality and precision in the instrument. <\/p>\n<p data-start=\"649\" data-end=\"841\">This spare mirror makes it easy to replace a worn or damaged mirror on the sextant. The mirror comes pre-assembled in a frame and can be replaced quickly using the fixing screws on the instrument. <\/p>\n<p data-start=\"843\" data-end=\"1182\">Whole Horizon Mirror means that <strong data-start=\"873\" data-end=\"912\">the entire mirror reflects the horizon<\/strong>. This solution often makes it easier to see the horizon clearly during observations and is therefore often used in training and courses in <strong data-start=\"1042\" data-end=\"1062\">astro-navigation<\/strong>. Many navigators choose this type of mirror because it provides a clear and easily visible image of the horizon during measurements.  <\/p>\n<p data-start=\"1184\" data-end=\"1314\">The mirror can also be used if you want to <strong data-start=\"1228\" data-end=\"1313\">convert a sextant from a traditional Split Horizon mirror to a Whole Horizon mirror<\/strong>.<\/p>\n<p data-start=\"1316\" data-end=\"1468\">This is a practical spare parts and maintenance product for navigators who use <strong data-start=\"1400\" data-end=\"1424\">the sextant for sailing<\/strong> and want to keep the instrument in good condition.<\/p>\n<p data-start=\"1470\" data-end=\"1666\"><strong data-start=\"1470\" data-end=\"1504\">The navigation store Kart.no AS<\/strong> is a distributor of Celestaire in Norway. For schools, courses and institutions, we can also deliver larger batches of sextants &#8211; please contact us for price and delivery time.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Celestaire Extra Whole Horizon Mirror is a spare mirror for Astra extras. Fully reflective horizon mirror that fits Astra IIIB and Astra III. <\/p>\n","protected":false},"featured_media":42024,"comment_status":"open","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":""},"product_brand":[1380],"product_cat":[1099],"product_tag":[],"class_list":{"0":"post-50574","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-celestaire","7":"product_cat-spare-parts-for-sextants","8":"product_shipping_class-boxship","9":"pa_produsent-celestaire","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"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 v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Celestaire Whole Horizon Mirror for Astra sextant<\/title>\n<meta name=\"description\" content=\"Celestaire Extra Whole Horizon Mirror spare mirror for Astra IIIB and Astra III sextant. Fully reflective horizon mirror for astronomical navigation.\" \/>\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\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Celestaire Extra Whole Horizon Mirror - spare mirror for Astra sextant\" \/>\n<meta property=\"og:description\" content=\"Celestaire Extra Whole Horizon Mirror spare mirror for Astra IIIB and Astra III sextant. Fully reflective horizon mirror for astronomical navigation.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kart.no\/en\/produkt\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\/\" \/>\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\/Celestaire-Extra-Whole-Horizon-Mirror.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"650\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\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\\\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\\\/\",\"url\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\\\/\",\"name\":\"Celestaire Whole Horizon Mirror for Astra sextant\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/kart.no\\\/en\\\/produkt\\\/celestaire-extra-whole-horizon-mirror-spare-mirror-for-astra-sextant\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/kart.no\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/Celestaire-Extra-Whole-Horizon-Mirror.jpg\",\"datePublished\":\"2026-01-25T23:53:47+00:00\",\"description\":\"Celestaire Extra Whole Horizon Mirror spare mirror for Astra IIIB and Astra III sextant. 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