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Abstract agriculture - geograph.org.uk - 113578
 

 

 

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Source page: http://commons.wikimedia.org/wiki/File:First_Photo_of_U.S._by_NASA_Satellite_-_GPN-2003-00031.jpg
Description
English: A giant photo map of the contiguous 48 states of the United States, the first ever assembled from satellite images, completed for NASA by the U.S. Department of Agriculture Soil Conservation Service Cartographic Division. The map is 10 by 16 feet, is composed of 595 cloud-free black-and-white images returned from NASA's first Earth Resources Technology Satellite (ERTS-1). The images were all taken at the same altitude (912 kilometers: 560 miles) and the same lighting angle. The images were produced by the spacecraft's Multi-spectral Scanner System (MSS) in Band 5, or the red portion of the visible spectrum, during the period July 25 to October 31, 1972. A similar mosaic has been made using Band 7, the near infrared, of the MSS. The mosaic is produced at scale of 1:1,000,000 (one inch on the mosaic equals a million inches on the ground). Enlargements of segments of the mosaic can be made up to a scale of 1:500,000. ERTS images are used for many other purposes besides cartography, including geology, hydrology, environmental and land use studies, agriculture studies, and various other areas.
Date 26 April 1974(1974-04-26)
Source Great Images in NASA Description
Author NASA
Permission
(Reusing this file)
Public domain This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)

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Shuttle.svg This image or video was catalogued by NASA Headquarters of the United States National Aeronautics and Space Administration (NASA) under Photo ID: GPN-2003-00031 AND Alternate ID: 74-H-275.
This tag does not indicate the copyright status or the source of the attached work. A normal copyright tag and a source are still required. See Commons:Licensing for more information.



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