Sodium streetlamps

ID: 2278 | This file appears in: Dark Sky over Flagstaff
Sodium streetlamps
Light emitted by Low-pressure sodium streetlamps, like this one in Flagstaff, Arizona, takes up fewer bands on the visible light spectrum than other streetlamps do, such as mercury vapor lights. | Source: Courtesy of the Flagstaff Dark Sky Coalition. http://www.flagstaffdarkskies.org/low-pressure-sodium-lighting/.
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Courtesy of the Flagstaff Dark Sky Coalition. http://www.flagstaffdarkskies.org/low-pressure-sodium-lighting/.
"Sodium streetlamps" appears in: Dark Sky over Flagstaff