File:Gravitational Lens (41586 1979 BF279381a0 Fig1 105x-CC).jpg
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DescriptionGravitational Lens (41586 1979 BF279381a0 Fig1 105x-CC).jpg |
English: Two very close quasistellar objects (now called quasars) were discovered in 1979 with nearly identical spectral characteristics. Astronomers assumed their initial conditions must be similar, but found that they were in fact two images of the same object produced by a gravitational lens. Observations were made using the KPNO 2.1-meter Telescope and UArizona Bok 2.3-meter Telescope at Kitt Peak National Observatory. |
Date | 14 July 2023, 13:44 (upload date) |
Source | Gravitational Lens |
Author | NOIRLab/NSF/AURA/D. Walsh, R. F. Carswell, R. J. Weymann |
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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. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:49, 14 July 2023 | 1,347 × 1,364 (462 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/41586_1979_BF279381a0_Fig1_105x-CC.jpg via Commons:Spacemedia |
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Source | NSF's NOIRLab |
Credit/Provider | NOIRLab/NSF/AURA/D. Walsh, R. F. Carswell, R. J. Weymann |
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Usage terms |
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Date and time of data generation | 13:44, 14 July 2023 |
Software used | Adobe Photoshop 24.4 (Windows) |
File change date and time | 22:31, 8 July 2023 |
Date and time of digitizing | 17:34, 8 July 2023 |
Date metadata was last modified | 00:31, 9 July 2023 |
Unique ID of original document | xmp.did:6182feea-31ce-1d41-868a-8a4feb5f8bb0 |
Contact information |
950 North Cherry Ave. Tucson, AZ, 85719 USA |
IIM version | 4 |