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The SQM-L, or "Sky Quality Meter - L," is a model with an additional integrated lens, offering a narrower measurement range of 20° compared to the 84° range of the standard SQM model. [9] The SQM is produced by the Canadian company Unihedron in Grimsby, Ontario.
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 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]
We pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets
Sky quality meter, an instrument for measuring the luminance of the night sky; Supersymmetric quantum mechanics, in theoretical physics; Computing.
She recommends keeping pets indoors and restricting their outdoor activity to brief bathroom breaks whenever air quality is poor or compromised. The fire situation has reached a critical level ...
The limiting magnitude for naked eye visibility refers to the faintest stars that can be seen with the unaided eye near the zenith on clear moonless nights. The quantity is most often used as an overall indicator of sky brightness, in that light polluted and humid areas generally have brighter limiting magnitudes than remote desert or high altitude areas.
The Sugar Bowl college football game between Notre Dame and the University of Georgia was postponed Wednesday and rescheduled for Thursday after the truck attack on Bourbon Street.
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