Observation

Butch Adams

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Jul 2, 2022, 3:02:00 PM7/2/22

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Can anyone tell me what this is? Looking towards the East Horizon during sunset.

L1001085 1.jpg

tom

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Jul 2, 2022, 3:13:59 PM7/2/22

to Butch Adams, astrometry

Butch,

A very interesting photo.

If you were looking West at sunset, I would say you are looking at the effect of a cloud on the horizon which is blocking the light on the lower atmosphere above you, causing a reduction of redish light scattered by dust in the sky. The sunlight traveling above the cloud is still causing the upper atmosphere to glow blue.

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Tom

On Sat, 2022-07-02 at 12:02 -0700, Butch Adams wrote:

Can anyone tell me what this is? Looking towards the East Horizon during sunset.

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J Vickroy

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Jul 2, 2022, 10:30:54 PM7/2/22

to Butch Adams, astrometry

Hi Butch,

I believe Tom is correct. Your photo is probably a nice example of Anticrepuscular rays. /jim