Computer Science – Performance
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...119..294w&link_type=abstract
Astronomy and Astrophysics, vol. 119, no. 2, Mar. 1983, p. 294-296.
Computer Science
Performance
3
Gallium, Infrared Astronomy, Infrared Detectors, Photoconductors, Photon Density, Silicon Radiation Detectors, Calibrating, Infrared Spectrometers, Infrared Telescopes, Performance Tests, Photometers
Scientific paper
The performance of Si:Ga detectors over a wide range of background photon fluxes covering those of the cooled space telescope as well as those of ground-based applications are investigated, and the performance of these detectors is cooled 10 micron spectrometers for ground based telescopes is predicted. In a helium-cooled space telescope NEP values as low as 3 x 10 to the -17th W Hz to the -1/2 for photometric measurements are achievable. No spontaneous spiking or increased noise after changing the operation mode, as observed on the other dope Si detectors, was seen for Si:Ga. No significant performance difference was found between detectors with transparent and transverse contacts. When used in a 10 micron broad band photometer of a large ground based telescope with a six arcsec field of view, the sensitivity is limited by the 300 K background to NEP of about 4 x 10 to the -14th W Hz to the -1/2.
Lemke Deitrich
Wolf Jack
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