{"id":3862,"date":"2009-10-17T03:00:00","date_gmt":"2009-10-17T08:00:00","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=3862"},"modified":"2009-10-17T03:00:00","modified_gmt":"2009-10-17T08:00:00","slug":"i-spy-with-my-electronic-eye","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/3862","title":{"rendered":"I Spy, With My Electronic Eye \u2026"},"content":{"rendered":"<p><a href=\"http:\/\/www.nerdmodo.com\/2009\/10\/can-spy-satellites-read-your-car-number-plate\/\">NerdModo:  Can Spy Satellites read your Car Number Plate?<\/a><\/p>\n<blockquote><p>Mathematically, the highest possible resolution for Hubble comes out to be  around 16cm which is around 6.3 inches or half a foot. Now that is good enough to spot a car and a building in detail but not good enough to read a newspaper headline.<\/p><\/blockquote>\n<p>This is an analysis using Rayleigh&#8217;s criterion, but no other tricks or effects (i.e. single image).  Hubble wasn&#8217;t designed for this kind of imagery, but is a reasonable order-of-magnitude example, because it&#8217;s in a fairly low orbit.  You can squeeze out a factor of two, perhaps, in altitude and aperture size, for spy satellites.  But planes are another story, since they are at a much lower altitude.  Examples of some different resolutions in the link.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NerdModo: Can Spy Satellites read your Car Number Plate? Mathematically, the highest possible resolution for Hubble comes out to be around 16cm which is around 6.3 inches or half a foot. Now that is good enough to spot a car &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/3862\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-3862","post","type-post","status-publish","format-standard","hentry","category-physics"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/3862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=3862"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/3862\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=3862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=3862"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=3862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}