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arcsecond

   Also found in: Wikipedia 0.01 sec.
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Noun1.arcsecond - a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
second
angular unit - a unit of measurement for angles
arcminute, minute of arc, minute - a unit of angular distance equal to a 60th of a degree
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It is called a SQM-L or a "Sky Quality Meter" which can quantitatively determine the brightness of the night sky in magnitudes per square arcsecond.
First National star party in South Africa by Monthly Notes of the Astronomical Society of Southern Africa
the maximum interval in minutes equals the full width at half maximum (FWHM) of a star image in arcseconds divided by the rate of motion of the asteroid in arcseconds per minute.
A method for or determining the V magnitude of aster asteroids from ... by Dymock, Roger; Miles, Richard / Journal of the British Astronomical Association
With an angular measuring sensitivity of more than 1 arcsecond (0.
Angle measuring by Tooling & Production
 
 
 
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