Design and commissioning of an in-air coronagraph testbed in the HCIT facility at NASA’s Jet Propulsion Laboratory

Wesley Baxter; Axel Potier; Garreth Ruane; Camilo Mejia Prada

doi:10.1117/12.2601432

1 September 2021 Design and commissioning of an in-air coronagraph testbed in the HCIT facility at NASA’s Jet Propulsion Laboratory

Wesley Baxter, Axel Potier, Garreth Ruane, Camilo Mejia Prada

Author Affiliations +

Proceedings Volume 11823, Techniques and Instrumentation for Detection of Exoplanets X; 118231S (2021) https://doi.org/10.1117/12.2601432
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

After completing its duty in one the vacuum chambers in the High Contrast Imaging Testbed (HCIT) facility at NASA’s Jet Propulsion Laboratory, the General Purpose Coronagraph Testbed (GPCT) has been retrofitted as the In-Air Coronagraph Testbed (IACT), with the purpose of verification of Boston Micromachines (BMC) 50x50 MEMS deformable mirrors (MEMS DM) performance by contrast comparison before and after random vibration testing. The testbed is configured as a vortex coronagraph, with one MEMS DM in the pupil plane to create a half dark hole in monochromatic light. High wavefront stability is achieved using an environmentally isolating enclosure, based on the enclosure design previously used on Caltech’s High Contrast Spectroscopy Testbed (HCST).

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Wesley Baxter, Axel Potier, Garreth Ruane, and Camilo Mejia Prada "Design and commissioning of an in-air coronagraph testbed in the HCIT facility at NASA’s Jet Propulsion Laboratory", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 118231S (1 September 2021); https://doi.org/10.1117/12.2601432

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