"Discoverer/Corona: First U.S. Reconnaissance Satellite. Mission failed. During the Cold War, the United States took hundreds of thousands of surveillance images of the Soviet Union using spy satellites. sensitivity: 50, [43], At least two launches of Discoverers were used to test satellites for the Missile Defense Alarm System (MIDAS), an early missile-launch-detection program that used infrared cameras to detect the heat signature of rockets launching to orbit. The Corona satellites used special 70 millimeter film with a 24-inch (610 mm) focal length camera. NRO Electronic Reading Room Major NRO Programs and Projects From the NRO Archives FOIA For All - Other Public Releases. + ' @media (max-width: 1199px){ #ouibounce-modal .description {font-size:13px !important;} }' }; National Air and Space Museum. .addClass( 'slideIn' + upOrDown ); Mission failed due to failure of Thor booster. Improper launch angle resulted in extreme orbit. + '
' Want to stay ahead of the art world? }) // Extends jQuery with a function to serialize to JSON Satellite imagery from the 1960s and 70s is unheard of minus an impressive set of black and white images declassified by the US government in 1992 and 2002. SignupForm.init($modal.find('form'), function onSuccess() { "National Reconnaissance Office Review and Redaction Guide for Automatic Declassification of 25-Year-Old Information. } if (prefix == undefined) { Infrared film was used on mission 1104, and color film on missions 1105 and 1008. closedSignupBar: { Best mission to date. Corona imagery has also been used by Romanian forest engineers studying landscape history, biologists tracing the destruction of Chinese mangroves, geoscientists forecasting water levels in a Nepalese lake, scientists measuring rock glacier movements in central Asia, and biogeographers tracking marmots’ nesting habits amid destructive agriculture practice in Kazakhstan. First KH-4A reconnaissance system to be launched into a retrograde orbit. The return capsule of the Discoverer 13 mission, which launched August 10, 1960, was successfully recovered the next day. There was significant image degradation. Version 1.0, 2006 edition, p. 154. “We can use imagery in the past to inform the future,” University of Leeds geoscientist C. Scott Watson, told the Times. }, 7500); This system was known as the Dual Improved Stellar Index Camera (DISIC). Experimental camera in a short-lived program. // ------------------------------------------------------------------- By Eric Roston. CORONA imagery courtesy US Geological Survey; Modern satellite imagery ©ESRI and DigitalGlobe. .done(function(data, textStatus, jqXHR) { link.rel = 'stylesheet'; if (getCookie(cookieNames[i]).length) { Destroyed shortly after launch. + '
' Nine of the KH-4A and KH-4B missions included ELINT subsatellites, which were launched into a higher orbit. The "CORONA Digital Atlas of the Middle East Project" hosts a large number of KH-4B imagery where users can view and download spatially corrected images. pagetype = document.querySelector('meta[property="og:type"]').getAttribute("content"), top: 'auto', Image quality is variable and displays areas of soft focus and image smear. Mission failed. // =================================================================== //and we can just return here. }); These panchromatic images (some of them are even stereo!) $.ajax({ Because the perspective of the satellite distorts spacial accuracy of the terrain, images require orthorectification before geographic features can be seen in their true position. [37] + '