A 256×256 element InSb focal plane array for ground-based astronomy |
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| Authors: | M A Blessinger G W Apgar J D Biggs M L Louderback C A Niblack |
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| Institution: | (1) Cincinati Electronics Corporation, 7500 Innovation Way, 45040 Mason, OH, USA |
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| Abstract: | A 256×256 element InSb (indium antimonide) focal plane array has been specifically developed for use in ground-based astronomy. The array is an indium bump hybrid of a high-quality InSb detector array fabricated with an improved process, mated to a new, specially-designed low-background multiplexer. The performance parameters have been tuned to best reflect the requirements of ground based astronomy. The circuit is a direct readout detector integrator. It has a well size typically around 1,000,000 electrons, a readout rate of about 400kHz, and has an expected noise level of about 200 electrons. |
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