File:The Evolution of Tucson City Lights (noao-dark sky).jpg
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![File:The Evolution of Tucson City Lights (noao-dark sky).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/The_Evolution_of_Tucson_City_Lights_%28noao-dark_sky%29.jpg/761px-The_Evolution_of_Tucson_City_Lights_%28noao-dark_sky%29.jpg?20231023203629)
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[edit]DescriptionThe Evolution of Tucson City Lights (noao-dark sky).jpg |
English: These three images taken in 1959, 1980 and 2003 show the evolutionary change and growth of the artificial lights emitted by the greater Tucson area as seen from Kitt Peak National Observatory, about 56 miles (90 kilometers) southwest of the downtown area. Although the light emission has obviously grown, qualitatively, it appears to have lagged the explosive growth in Tucson's population during this period. Light pollution control ordinances and outstanding public cooperation have limited stray light to the extent that Kitt Peak remains a world-class astronomical site. The ghost image just slightly visible to the naked eye in the foreground of the image is actually a series of daylight exposures that demonstrate the location of the mountain ranges between Kitt Peak and Tucson. A much larger image, continuing the panorama to the north and south, is separately available. |
Date | 30 June 2020, 21:53:00 (upload date) |
Source | The Evolution of Tucson City Lights |
Author | Bill Schoening, J.C.Golson, Mark Hanna and NOIRLab/NSF/AURA/ |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. |
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current | 20:36, 23 October 2023 | ![]() | 2,400 × 1,890 (323 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/noao-dark_sky.jpg via Commons:Spacemedia |
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Credit/Provider | Bill Schoening, J.C.Golson, Mark Hanna and NOIRLAB/NSF/AURA/ |
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Date and time of data generation | 21:53, 30 June 2020 |
Software used | Adobe Photoshop CS Macintosh |
File change date and time | 11:27, 4 March 2004 |
Date and time of digitizing | 04:27, 4 March 2004 |
Date metadata was last modified | 04:27, 4 March 2004 |
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IIM version | 4 |