An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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dark current noise
  نوفه‌ی ِ جریان ِ تاریکی  
nufe-ye jarayân-e târiki
Fr.: bruit du courant d'obscurité  

In a → CCD detector, statistical fluctuation of the → dark current, equal to the square root of the dark current. CCDs can be cooled either with thermoelectric coolers or liquid nitrogen to reduce this effect. Ideally, the dark current noise should be reduced to a point where its contribution is negligible over a typical exposure time.

See also: → dark; → current; → noise.