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File:Light pollution country versus city.png

Original file (972 × 1,296 pixels, file size: 1.9 MB, MIME type: image/png)

Description
English: Comparison showing the effects of light pollution on viewing the sky at night.

The southern sky, featuring Sagittarius and Scorpius. Top - Leamington, UT, pop. 217 Bottom - Orem, UT, in a metropolitan area of ~400,000

I've attempted to match sky brightness to how it appeared to my eyes.
Русский: Световое загрязнение. Созвездие Стрелец и Скорпион. Сверху - Leamington, штат Юта, США, население 217 человек. Снизу - Orem, штат Юта, США, население ~400,000
Date
Source originally posted to Flickr as Southern sky, country vs. city
Author Jeremy Stanley
Permission
(Reusing this file)
This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 10 January 2009, 01:40 by SBarnes. On that date, it was confirmed to be licensed under the terms of the license indicated.
w:en:Creative Commons
attribution
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Captions

Comparison of the effect of light pollution on the visibility of stars in a rural and a metropolitan area.

Items portrayed in this file

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some value

Flickr user ID: 79297308@N00
author name string: Jeremy Stanley
URL: https://www.flickr.com/photos/79297308@N00

published in

Flickr

publication date: 7 August 2007

copyright status

copyrighted

copyright license

Creative Commons Attribution 2.0 Generic

source of file

file available on the internet

described at URL: https://www.flickr.com/photos/jpstanley/1035660145/
operator: Flickr
URL: https://live.staticflickr.com/1401/1035660145_04f428e321_o.png

inception

6 August 2007

media type

image/png

‎Flickr photo ID

1035660145

File history

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Date/TimeThumbnailDimensionsUserComment
current10:42, 18 February 2012Thumbnail for version as of 10:42, 18 February 2012972 × 1,296 (1.9 MB)ProsfilaesReverted to version as of 08:00, 10 January 2009; we don't want the details, we want an accurate representation of light levels
04:18, 9 February 2011Thumbnail for version as of 04:18, 9 February 2011972 × 1,296 (2.04 MB)HydrargyrumApplied gamma correction to bring out details in dark areas, for viewing on computer monitors.
08:00, 10 January 2009Thumbnail for version as of 08:00, 10 January 2009972 × 1,296 (1.9 MB)SBarnes{{Information |Description={{en|1=Comparison showing the effects of light pollution on viewing the sky at night. The southern sky, featuring Sagittarius and Scorpius. Top - Leamington, UT, pop. 217 Bottom - Orem, UT, in a metropolitan area of pop. ~400,00

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Quelle: https://en.wikipedia.org/wiki/File:Light_pollution_country_versus_city.png