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Published December 13, 2020 | Published
Book Section - Chapter Open

Design of the vacuum high contrast imaging testbed for CDEEP, the Coronagraphic Debris and Exoplanet Exploring Pioneer

Abstract

The Coronagraphic Debris Exoplanet Exploring Payload (CDEEP) is a Small-Sat mission concept for high contrast imaging of circumstellar disks. CDEEP is designed to observe disks in scattered light at visible wavelengths at a raw contrast level of 10-7 per resolution element (10-8 with post processing). This exceptional sensitivity will allow the imaging of transport dominated debris disks, quantifying the albedo, composition, and morphology of these low-surface brightness disks. CDEEP combines an off-axis telescope, microelectromechanical systems (MEMS) deformable mirror, and a vector vortex coronagraph (VVC). This system will require rigorous testing and characterization in a space environment. We report on the CDEEP mission concept, and the status of the vacuum-compatible CDEEP prototype testbed currently under development at the University of Arizona, including design development and the results of simulations to estimate performance.

Additional Information

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). Many thanks to the coauthors of the CDEEP proposal for their hard work on said proposal in a very difficult time, and to those who gave feedback on this work. Portions of this work were supported by the Arizona Board of Regents Technology Research Initiative Fund (TRIF). Thanks also to Hop Bailey and the Arizona Space Institute for their support of the mission concept. An allocation of computer time from the UA Research Computing High Performance Computing (HPC) at the University of Arizona is gratefully acknowledged. Thanks to Zemax for the access to their OpticStudio STOP analysis feature. Special thanks to everyone at the Space Telescope Science Institute Russell B. Makidon Optics Laboratory for their advice.

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