Dark sky definition

Dark sky compliant means the fixture must prevent the light from being directed upwards, or otherwise located to shield the sky from light. If the fixture is not rated as “dark sky” compliant by the manufacturer, it could be located under deep (at least 24”) eaves as one way to satisfy this requirement.

Examples of Dark sky in a sentence

• Dark sky standards require that lighting is downcast, illuminates only the intended areas, and does not cause disabling glare that affects driver safety and reduces the visibility of starry night skies.

• Dark sky observations used for the comparison of spectra at different resolution modes.

• Dark sky compliance should be considered for incorporation which focuses on reducing light pollution and over-illumination of the night sky, which has adverse effects on the natural and built environments.

• Dark sky lighting that concentrates the light downward is encouraged.

• Dark sky tourism can help to mitigate these detrimental impacts and further serve the SDGs (see box 2).

• Dark sky standards require that lighting is downcast, illuminated only the intended areas, and does not cause disabling glare that affects driver safety and reduces the visibility of starry night skies.

• Dark sky status is difficult to attain and maintain, but can enhance visibility and foster increased tourism and local economic activity.

• Don’t miss telescopic view of Saturn’s rings, with satellite SUNDAY, JULY 9Titan farthest to the west tonight! Dark sky watch begins at 11:00 PM as we depart for athletic fields for Mars and Milky Way viewing and a tour ofsummer constellations.

• Dark sky background alone underestimates the total background because of the proximity (350 kpc) of NGC 4552 to the center of the Virgo cluster.

• Dark sky lighting is a design tool where the lighting focuses on the thing being lit without seeing the lighting fixture and to eliminate nighttime glare.