In-orbit Performance of the Lws Detectors
نویسندگان
چکیده
The Long-Wavelength Spectrometer (LWS) onboard the Infrared Space Observatory (ISO) covers the 43-197m region with ten doped-Germanium photocon-ductors that are read out with integrating JF-4 ampli-ers. The behaviour of these detector/readout units during some 500 days of operations in space is described. There are no systematic variations of the sensitivity and of the dark current in observations of pho-tometric standard sources in the sky or in measurements with internal illuminators. The eeects of ionis-ing radiation do not vary on long timescales, either. It is shown that the impact of the slow response times of the detectors on the accuracy of line scans is small.
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