Fr.: détecteur CCD bidimensionnel
A CCD detector having two dimensions.
âškârgar-e sisidi (#)
Fr.: détecteur CCD
Fr.: image CCD
One of a series of astronomical images obtained using a CCD detector in particular for calibration purposes.
Fr.: gain de CCD
In a → CCD detector, the ratio of the initial number of electrons in a → pixel to the final number of → analog-to-digital units (or counts) reported by camera software. For example, a gain of 1.8 e-/count means that the camera produces 1 count for every 1.8 recorded electrons.
bastâr-e si-si-di, bastâvar-e ~
Fr.: obturateur CCD
A mechanical device of a CCD camera that controls the duration of a an exposure, as by opening and closing to allow the stellar light to expose the CCD detector.
Shutter, from to shut, from O.E. scyttan from W.Gmc. *skutjanan + → -er.
charge-coupled device (CCD)
dastgâh-e jafsari-ye bâr, sisidi
Fr.: dispositif à transfert de charge
A solid-state detector that stores the electrons, produced by incident photons, in potential wells at the surface of a semiconductor. The packages of charge are moved about the surface by being transferred to similar adjacent potential wells. The wells are controlled by the manipulation of voltage applied to surface electrodes.