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The dark-sky movement is a campaign to reduce light pollution.The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of electric lighting on the environment, improving the well-being, [1] health [2] and safety [3] of people and wildlife, [4] and cutting down on energy usage.
DarkSky International, formerly the International Dark-Sky Association (IDA), [1] is a United States–based non-profit organization incorporated in 1988 by founders David Crawford, a professional astronomer, and Tim Hunter, a physician and amateur astronomer.
A dark-sky preserve status enables high-quality astronomical observation in Paranal Observatory. [1] A dark-sky preserve (DSP) is an area, usually surrounding a park or observatory, that restricts or reduces light pollution or maintains and protects naturally dark night skies. Different terms have been used to describe these areas as national ...
International Dark Sky Week (formerly the National Dark Sky Week) is held during the week of the new moon in April, [1] [2] when people worldwide may turn off their lights to observe the beauty of the night sky without light pollution. This event was founded in 2003 by high school student Jennifer Barlow of Midlothian, Virginia. [3]
The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution .
The Jizera Dark Sky Park (Polish: Izerski Park Ciemnego Nieba - IPCN, Czech: Jizerská oblast tmavé oblohy - JOTO) is the first transnational dark-sky preserve. It is located in a nearly-uninhabited region of the Jizera Mountains that lies halfway between Poland and the Czech Republic .
It was designated Ireland's first International Dark Sky Reserve by the International Dark-Sky Association (IDA). Kerry International Dark-Sky Reserve was awarded the Gold Tier Award on 27 January 2014, by the IDA. [2] It was the first Gold Tier Reserve in the northern hemisphere, and is one of only four Gold Tier Dark-Sky Reserves in the world.
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