Characterization of solid state array cameras for the mid-IR |
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| Authors: | Eric Keto Roger Ball John Arens Garrett Jernigan and Margaret Meixner |
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| Institution: | (1) Lawrence Livermore National Laboratory, University of California, POB 808 L-59, 94550 Livermore, California;(2) Present address: NASA Infrared Telescope Facility, University of Hawaii, Hawaii, USA;(3) Present address: Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Lawrence, USA;(4) Present address: Space Sciences Laboratory, University of California, Berkeley;(5) Present address: Department of Astronomy, University of California, Berkeley |
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| Abstract: | We present a characterization of some processes affecting the performance of solid state array cameras designed for ground based astronomical imaging in the 8–13 m atmospheric window. Our discussion includes a novel model for electron-hole generationrecombination noise based on the probable pathlength of an electron in a photoconductor. We use the Berkeley mid-IR Array Camera as an example. For this camera, the results show that the total optical system composed of the camera, a 3m telescope, and the atmosphere has an efficiency of about 3%, a 1 noise equivalent flux density of 25 mJy min–1/2arcsec–2 measured over a   /=10% band width, and a noise equivalent expressed as the ambient temperature thermal black body noise of 23%. |
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| Keywords: | Infrared Astronomy Infrared Instruments Infrared Imaging Detector Arrays |
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