Wavefront sensing and control for a future Habitable Worlds Observatory

David Redding; Scott Basinger; Siddarayappa Bikkannavar; Brandon Dube; Andrew Kee; John Lou; Carl Nissly; Catherine Ohara; Philip Poon; Erkin Sidick; Jonathan Tesch; Mitchell Troy

doi:10.1117/12.3020583

23 August 2024 Wavefront sensing and control for a future Habitable Worlds Observatory

David Redding, Scott Basinger, Siddarayappa Bikkannavar, Brandon Dube, Andrew Kee, John Lou, Carl Nissly, Catherine Ohara, Philip Poon, Erkin Sidick, Jonathan Tesch, Mitchell Troy

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130921P (2024) https://doi.org/10.1117/12.3020583
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The Habitable Worlds Observatory will have uniquely stringent wavefront stability requirements, in the single-digit picometers for observations lasting days, to preserve coronagraph contrast for imaging earth-like exoplanets. This need will be addressed using high-precision Wavefront Sensing and Control methods, including continuous picometerprecision metrology and control of the Optical Telescope Assembly (OTA). This paper reviews methods for initializing and maintaining the OTA wavefront, evolved from those used for the James Webb Space Telescope, but extended to much higher precision. It concludes by identifying performance targets for WFSC technology development, to help guide NASA technology investments.

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David Redding, Scott Basinger, Siddarayappa Bikkannavar, Brandon Dube, Andrew Kee, John Lou, Carl Nissly, Catherine Ohara, Philip Poon, Erkin Sidick, Jonathan Tesch, and Mitchell Troy "Wavefront sensing and control for a future Habitable Worlds Observatory", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130921P (23 August 2024); https://doi.org/10.1117/12.3020583

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