Mr. Brian Welch Profile

Brian Welch

at Johns Hopkins Univ

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Proceedings Article | 1 August 2021 Poster

Testbed for measuring ultraviolet contrast of next generation microshutter arrays

Alex Carter, Brian Welch, Stephan McCandliss, Alexander Kutyrev, Matthew Greenhouse, Kyowon Kim

Proceedings Volume 11821, 118211F (2021) https://doi.org/10.1117/12.2594777

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Microshutter arrays are powerful tools enabling simultaneous spectroscopy of multiple objects within a single, crowded field-of-view. This technology is currently employed on the James Webb Space Telescope, and next-generation arrays are being proposed for future flagship missions such as LUVOIR and HabEx. For these future large missions, it is important to fully characterize the performance of the next-generation microshutter arrays in the lab, particularly in the ultraviolet range not probed with JWST. To this end, we have developed a laboratory testbed to measure the contrast between opened and closed shutters achievable with these devices.

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