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Old 21-03-2022, 06:45 AM
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Brettstar6754
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Broad spectrum on horizon before sunrise?

any info on this image would be appreciated. Taken from north west NSW before sunrise. Please comment. credit, Jarred Giles
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Old 21-03-2022, 09:00 AM
JA
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If real, it's a shot well before sunrise, helped by the absence of cloud in picking up the full extent of the Rayleigh scattering and refraction of light as the sunlight light traces a much longer path through the atmosphere than during the day. There is also a phenomenon some refer to as green-flash that occurs briefly in the last moments of sunset or early moments of sunrise which might somehow factor in as a type of refraction.

Additionally the image may have had some amped-up in-camera or post-processing (increased saturation, contrast, sharpening etc..) as suggested by the white "ringing" edge on the silhouette of the horizon landscape.

Where did you see or source the image?

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JA

Last edited by JA; 21-03-2022 at 09:37 AM.
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