Coronal and heliospheric imaging with achromatic metasurfaces pathfinder (CHAMP)

Juliana T. Vievering; David Shrekenhamer; Angelos Vourlidas; Nora Lane; Joseph Centurelli; Garret Bonnema; Chad Weiler; Joseph Miragliotta; Lance Oh; Robert Bruce

doi:10.1117/12.2630172

27 August 2022 Coronal and heliospheric imaging with achromatic metasurfaces pathfinder (CHAMP)

Juliana T. Vievering, David Shrekenhamer, Angelos Vourlidas, Nora Lane, Joseph Centurelli, Garret Bonnema, Chad Weiler, Joseph Miragliotta, Lance Oh, Robert Bruce

Author Affiliations +

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 121803G (2022) https://doi.org/10.1117/12.2630172
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

White light observations of the solar corona are crucial for understanding large-scale coronal structures and examining the evolution of solar transients, such as coronal mass ejections (CMEs), which have important space weather impacts. We seek to develop technology for producing high-resolution, wide-FOV maps of the white light corona with reduced instrument size and complexity. With conventional optical designs, scanning the corona with a small instantaneous FOV or accommodating a telescope on a spinning or non-solar centered spacecraft would require large/complex gimbaled systems. To avoid these complex systems, conventional heliospheric imagers are designed with a wide FOV, sacrificing spatial resolution and throughput for coverage. To address this need, we have designed a visible light telescope which uses novel achromatic metasurface Risley prisms (MRPs) to create high-resolution, wide-FOV maps of the solar corona in a small form factor: the Coronal and Heliospheric imaging with Achromatic Metasurfaces Pathfinder (CHAMP). MRPs enable rapid mapping of a large FOV with a small instantaneous FOV, and features of interest (e.g., CMEs, comets, etc.) can be tracked using optimized scanning patterns. Here we present the preliminary concept and optical design for CHAMP.

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Juliana T. Vievering, David Shrekenhamer, Angelos Vourlidas, Nora Lane, Joseph Centurelli, Garret Bonnema, Chad Weiler, Joseph Miragliotta, Lance Oh, and Robert Bruce "Coronal and heliospheric imaging with achromatic metasurfaces pathfinder (CHAMP)", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 121803G (27 August 2022); https://doi.org/10.1117/12.2630172

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KEYWORDS

Imaging systems

Telescopes

Solar processes

Beam steering

Optical instrument design

Prisms

Optical telescopes

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