File:Multiple Green Flashes (iotw2313a).tiff
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DescriptionMultiple Green Flashes (iotw2313a).tiff |
English: From the high altitude of Cerro Tololo Inter-American Observatory (CTIO) in Chile, two astrophotographers captured the elusive sunset phenomenon known as the green flash. This stunning trick of light occurs at sunset and sunrise when light from the Sun travels through the thickest part of Earth’s atmosphere. Acting like a prism, Earth's atmosphere bends, or refracts, the light and separates it into its component wavelengths. Blue and violet light are scattered by the atmosphere, while red, orange and yellow are refracted below the solar disk below the horizon, leaving the green light the most visible during the few seconds that the Sun disappears below the horizon. Here, though, is another uncommon phenomenon. Distinct thermal layers above the Pacific Ocean led to a Fata Morgana mirage displaying several green flashes. Two photographers from the recent NOIRLab 2022 Photo Expedition jointly worked the controls of the camera to quickly capture the elusive phenomenon.This image was the NASA Astronomy Picture of the Day on 28 March 2023. |
Date | 28 March 2023 (upload date) |
Source | Multiple Green Flashes |
Author | CTIO/NOIRLab/NSF/AURA/T. Slovinský & P. Horálek (IoP Opava) |
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Licensing[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 | 17:40, 13 April 2023 | 3,204 × 2,344 (43.01 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/iotw2313a.tif via Commons:Spacemedia |
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Camera manufacturer | Canon |
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Camera model | Canon EOS R6 |
Exposure time | 1/125 sec (0.008) |
F-number | f/9 |
ISO speed rating | 100 |
Date and time of data generation | 19:37, 9 April 2022 |
Lens focal length | 560 mm |
Width | 3,204 px |
Height | 2,344 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Image data location | 37,866 |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 2,344 |
Bytes per compressed strip | 45,061,056 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 24.2 (Windows) |
File change date and time | 04:14, 25 March 2023 |
Exposure Program | Manual |
Exif version | 2.31 |
Date and time of digitizing | 19:37, 9 April 2022 |
APEX shutter speed | 6.965784 |
APEX aperture | 6.33985 |
APEX exposure bias | 0 |
Maximum land aperture | 6.25 APEX (f/8.72) |
Metering mode | Pattern |
Flash | Flash did not fire |
Color space | Uncalibrated |
Focal plane X resolution | 1,520 |
Focal plane Y resolution | 1,520 |
Focal plane resolution unit | 3 |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |