Our group has developed the first 1024x1024 high background Si:As detector array, the Megapixel Mid-Infrared array (MegaMIR). MegaMIR is designed to meet the thermal imaging and spectroscopic needs of the ground-based and airborne astronomical communities. MegaMIR was designed with switchable capacitance and windowing capability to allow maximum flexibility. We report initial test results for the new array.
We present a description of a new 1024x1024 Si:As array designed for ground-based use from 5 -28 microns. With a maximum well depth of 5e6 electrons, this device brings large-format array technology to bear on ground-based midinfrared programs, allowing entry to the megapixel realm previously only accessible to the near-IR. The multiplexer design features switchable gain, a 256x256 windowing mode for extremely bright sources, and it is two-edge buttable. The device is currently in its final design phase at DRS in Cypress, CA. We anticipate completion of the foundry run in the beginning of 2006. This new array will enable wide field, high angular resolution ground-based follow up of targets found by space-based missions such as the Spitzer Space Telescope and the Widefield Infrared Survey Explorer (WISE).
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