Simulated results of the PIAA-vortex coronagraph for on-axis telescopes

Kevin Fogarty; Dan Sirbu; Ruslan Belikov

doi:10.1117/12.3020835

23 August 2024 Simulated results of the PIAA-vortex coronagraph for on-axis telescopes

Kevin Fogarty, Dan Sirbu, Ruslan Belikov

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 1309223 (2024) https://doi.org/10.1117/12.3020835
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

We present simulated results for the Phase Induced Amplitude Apodization (PIAA)-Vortex coronagraph for on-axis telescope architectures. In previous studies, we demonstrated that the PIAA-Vortex coronagraph has the potential to overcome limitations on coronagraph performance for on-axis telescopes, and can maintain insensitivity to stellar angular diameters on the order of 0.1 λ/D at a contrast of 10⁻¹⁰. Here, we present designs for the PIAA-Vortex coronagraph optimized for a segmented, on-axis telescope aperture that creates a 10⁻¹⁰ - contrast, broadband dark zone with a 20% bandwidth and an inner working angle of 2.5 λ/D. These designs are part of ongoing modelling work. We show that the Earthlike exoplanet yield of the design presented here reduces the performance gap between on-axis and off-axis coronagraphy, and describe preliminary results which increase the throughput, aberration sensitivity, and overall yield of the coronagraph further. The PIAA-Vortex coronagraph will contribute to enabling consideration of obstructed telescope pupils for the Habitable Worlds Observatory, thereby taking advantage of previous NASA optical observatory heritage and potentially allowing for greater flexibility in observatory design.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kevin Fogarty, Dan Sirbu, and Ruslan Belikov "Simulated results of the PIAA-vortex coronagraph for on-axis telescopes", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309223 (23 August 2024); https://doi.org/10.1117/12.3020835

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