File:Ribbons of Light.jpg
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[edit]DescriptionRibbons of Light.jpg |
English: For a photo taken at night, this image appears to be ablaze with light. The winding road, which leads to Gemini North, one half of the international Gemini Observatory, a Program of NSF’s NOIRLab, looks like a bright white ribbon. However, this abundance of artificial light is an illusion. In reality, enormous effort is made to keep artificial light in the area around the telescopes to a bare minimum. This mitigates interference by light sources from Earth with astronomical observations. The road appears so bright because the photo was taken with a long exposure time. This is evident by the long trails swept out by the stars, caused by the rotation of the Earth. This is also discernible by the orange band on the left, caused by the movement of a laser guide star (LGS) coming from a telescope at the summit of Maunakea. These LGS systems track how atmospheric turbulence distorts light as it reaches the Earth so that these changes can be accounted for in telescope observations. As the long exposure captured the apparent movement of the stars and laser guide star, the light from the road accumulated, resulting in a seemingly glowing road! |
Date | |
Source | https://noirlab.edu/public/images/iotw2147a/ |
Author | International Gemini Observatory/NOIRLab/NSF/AURA/J. Chu |
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[edit]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 | 17:13, 2 December 2021 | 4,928 × 3,289 (8.29 MB) | Pandreve (talk | contribs) | Uploaded a work by International Gemini Observatory/NOIRLab/NSF/AURA/J. Chu from https://noirlab.edu/public/images/iotw2147a/ with UploadWizard |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Credit/Provider | International Gemini Observatory/NOIRLab/NSF/AURA/J. Chu |
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Source | NSF's NOIRLab |
Author | Photographer, Jason K. Chu |
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Date and time of data generation | 12:00, 24 November 2021 |
JPEG file comment | For a photo taken at night, this image appears to be ablaze with light. The winding road, which leads to Gemini North, one half of the international Gemini Observatory, a Program of NSF’s NOIRLab, looks like a bright white ribbon. However, this abundance of artificial light is an illusion. In reality, enormous effort is made to keep artificial light in the area around the telescopes to a bare minimum. This mitigates interference by light sources from Earth with astronomical observations. The road appears so bright because the photo was taken with a long exposure time. This is evident by the long trails swept out by the stars, caused by the rotation of the Earth. This is also discernible by the orange band on the left, caused by the movement of a laser guide star (LGS) coming from a telescope at the summit of Maunakea. These LGS systems track how atmospheric turbulence distorts light as it reaches the Earth so that these changes can be accounted for in telescope observations. As the long exposure captured the apparent movement of the stars and laser guide star, the light from the road accumulated, resulting in a seemingly glowing road! |
Lens used | 14.0-24.0 mm f/2.8 |
Serial number of camera | 3073309 |
Software used | Adobe Photoshop 22.0 (Windows) |
Date metadata was last modified | 12:08, 29 January 2021 |
File change date and time | 12:08, 29 January 2021 |
Date and time of digitizing | 15:14, 1 July 2020 |
Unique ID of original document | 956B746B28E6500248B1BA3ED269160E |
Keywords | Gemini North |
Contact information |
950 North Cherry Ave. Tucson, AZ, 85719 USA |