How light pollution affects the dark night skies

This image illustrates the Bortle scale, which measures the impact of light pollution on the dark skies at a given location. It shows, from left to right, the increase in the number of stars and night-sky objects visible in excellent dark sky conditions compared with cities. 

The illustration is a modification of an original photograph taken at ESO's Paranal Observatory in Chile, a place with excellent dark-sky conditions, perfect for astronomy.

Crédit:

ESO/P. Horálek, M. Wallner

À propos de l'image

Identification:dark-skies
Type:Dessin
Date de publication:29 juin 2022 08:52
Taille:8000 x 4500 px

À propos de l'objet

Nom:light pollution
Type:Unspecified : Sky Phenomenon : Night Sky
Catégorie:Illustrations

Formats des images

Grand JPEG
7,1 Mio
JPEG taille écran
190,3 Kio