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A sky quality meter (SQM) is an instrument used to measure the luminance of the night sky. It is used, typically by amateur astronomers , to quantify the skyglow aspect of light pollution and uses units of " magnitudes per square arcsecond" favored by astronomers.
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 size of the project (in terms of number of observations) expanded dramatically in that year. In 2014, the project expanded to also include data obtained via the Loss of the Night app for Android devices, and the Dark Sky Meter app for iOS devices. In addition, new star charts were added to extend the standard map based campaign throughout ...
Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars. It is a commonly noticed aspect of light pollution . While usually referring to luminance arising from artificial lighting , skyglow may also involve any scattered light seen at night, including ...
Sky quality meter, an instrument for measuring the luminance of the night sky; Supersymmetric quantum mechanics, in theoretical physics; Computing.
The society's expressive goal is to make the sky accessible to all people, ... In April 2011 the Sky Quality Meter measured 21,81 mag/arcsec². History
The roof of the building hosts a number of the observatory's sensing equipment including a Sky Quality Meter for quantifying levels of light pollution, a coelostat for observing the Sun, and day and night-time all-sky cameras - two of six the university operates throughout the UK. [3]
The device, a “Sky Quality Meter,” measures artificial brightness in a night sky. “I call this the edge of the wild,” Proctor said, speaking over a chorus of crickets and frogs. But even ...