{"version":"1.0","provider_name":"Museum of Angra do Heroismo","provider_url":"https:\/\/museu-angra.cultura.azores.gov.pt\/en\/","author_name":"Vitor Oliveira","author_url":"https:\/\/museu-angra.cultura.azores.gov.pt\/en\/author\/vitor-oliveira\/","title":"Planispheric Astrolabe - Museum of Angra do Heroismo","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"UjzJCrVCmI\"><a href=\"https:\/\/museu-angra.cultura.azores.gov.pt\/en\/others\/historical-pieces\/planispheric-astrolabe\/\">Planispheric Astrolabe<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/museu-angra.cultura.azores.gov.pt\/en\/others\/historical-pieces\/planispheric-astrolabe\/embed\/#?secret=UjzJCrVCmI\" width=\"600\" height=\"338\" title=\"&#8220;Planispheric Astrolabe&#8221; &#8212; Museum of Angra do Heroismo\" data-secret=\"UjzJCrVCmI\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/museu-angra.cultura.azores.gov.pt\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"The planispheric astrolabe is believed to be a Greek invention, probably dating from the 9th century, which reached the Iberian Peninsula via Arab travellers. It was an astronomical observation instrument, allowing the identification of stars and the measurement of their altitude above the horizon, as well as the calculation of sunrise and sunset times. This [&hellip;]","thumbnail_url":"https:\/\/museu-angra.cultura.azores.gov.pt\/wp-content\/uploads\/2025\/03\/banner-86.jpg","thumbnail_width":630,"thumbnail_height":400}