An Etymological Dictionary of Astronomy and Astrophysics
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→ charge-coupled device.

Short for → charge + coupled, from → couple, + → device.

A CCD detector having two dimensions.

→ CCD; → array.

→ charge-coupled device.

→ CCD; → detector.

One of a series of astronomical images obtained using a CCD detector in particular for calibration purposes.

→ CCD; → frame.

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.

→ charge-coupled device (CCD); → gain.

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.

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.

→ charge; coupled adj. from → couple; → device.