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21 Aug, 2019
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File:Multiple Green Flashes (iotw2313a).jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:40, 13 April 2023		3,204 × 2,344 (717 KB)	OptimusPrimeBot	#Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/large/iotw2313a.jpg via Commons:Spacemedia

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Cerro Tololo Inter-American Observatory

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Credit/Provider	CTIO/NOIRLab/NSF/AURA/T. Slovinský & P. Horálek (IoP Opava)
Source	NSF's NOIRLab
Short title	Multiple Green Flashes
Image title	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.
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	07:00, 28 March 2023
JPEG file comment	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.
Serial number of camera	172027002478
Lens used	TAMRON 100-400mm F/4.5-6.3 Di VC USD A035
Rating (out of 5)	0
File change date and time	05:14, 25 March 2023
Date and time of digitizing	19:37, 9 April 2022
Date metadata was last modified	05:14, 25 March 2023
Software used	Adobe Photoshop 24.2 (Windows)
Unique ID of original document	59968C3A166E13915A3DEEBE05BAA9E7
Keywords	Sun
Contact information	https://noirlab.edu 950 North Cherry Ave. Tucson, AZ, 85719 USA

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