2015/09/16 by John Krist, Krist, John, B. Nemati +3
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy and Astrophysical Research #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1509.05082
openalex publication_date 2015/09/16 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
The WFIRST-AFTA 2.4 m telescope will provide in the next decade the\nopportunity to host a coronagraph for the imaging and spectroscopy of planets\nand disks. The telescope, however, is not ideal, given its obscured aperture.\nOnly recently have coronagraph designs been thoroughly investigated that can\nefficiently work with this configuration. Three coronagraph designs, the hybrid\nLyot, the shaped pupil, and the phase-induced amplitude-apodization complex\nmask coronagraph (PIAA-CMC) have been selected for further development by the\nAFTA project. Real-world testbed demonstrations of these have just begun, so\nfor now the most reliable means of evaluating their potential performance comes\nfrom numerical modeling incorporating diffraction propagation, realistic system\nmodels, and simulated wavefront sensing and control. Here we present the\nmethods of performance evaluation and results for the current coronagraph\ndesigns.\n