An Etymological Dictionary of Astronomy and Astrophysics

6 terms — C › CC

C CA CC CD CE CG CH CI CL CM CN CO CP CR CS CU CY

CCD   سی‌سی‌دی   si-si-di (#) Fr.: CCD → charge-coupled device. See also: Short for → charge + coupled, from → couple, + → device.

CCD array   آرست ِ سی‌سی‌دی   ârast-e sisidi Fr.: détecteur CCD bidimensionnel A CCD detector having two dimensions. See also: → CCD; → array.

CCD detector   آشکارگر ِ سی‌سی‌دی   âškârgar-e sisidi (#) Fr.: détecteur CCD → charge-coupled device. See also: → CCD; → detector.

CCD frame   تک تصویر ِ سی سی دی   tak-tasvir-e sisidi Fr.: image CCD One of a series of astronomical images obtained using a CCD detector in particular for calibration purposes. See also: → CCD; → frame.

CCD gain   بهره‌ی ِ سی‌سی‌دی   bahre-ye CCD 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. See also: → charge-coupled device (CCD); → gain.

CCD shutter   بستار ِ سی‌سی‌دی   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. Etymology (EN): Shutter, from to shut, from O.E. scyttan from W.Gmc. *skutjanan + → -er.