Presentation + Paper
27 August 2022 The PICTURE-C exoplanetary imaging balloon mission: laboratory coronagraph demonstrations of high-contrast imaging and low-order wavefront control
Author Affiliations +
Abstract
The Planetary Imaging Concept Testbed Using a Recoverable Experiment - Coronagraph (PICTURE-C) mission will directly image debris disks and exozodiacal dust around nearby stars from a high-altitude balloon using a vector vortex coronagraph. The first flight of PICTURE-C launched from the NASA Columbia Scientific Balloon Facility (CSBF) in Ft. Sumner, NM on September 28, 2019. This flight successfully demonstrated many key technologies for exoplanetary direct imaging missions and all hardware components for the second, sciencefocused flight of PICTURE-C, which had been scheduled for the fall of 2021, but was delayed due to inclement weather until 2022. We present laboratory demonstrations of the flight 2 coronagraph, which uses a high-order 952 actuator MEMS deformable mirror to create a high-contrast dark zone at the 10-7 level. The performance of the low-order and high-order wavefront control systems is demonstrated and compared with model predictions.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher B. Mendillo, Kuravi Hewawasam, Jason Martel, Thaddeus Potter, Timothy A. Cook, and Supriya Chakrabarti "The PICTURE-C exoplanetary imaging balloon mission: laboratory coronagraph demonstrations of high-contrast imaging and low-order wavefront control", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 1218022 (27 August 2022); https://doi.org/10.1117/12.2630237
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KEYWORDS
Coronagraphy

Wavefronts

Speckle

Mirrors

Sensors

Cameras

Control systems

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