Coronagraph Technology Development Milestone 1 Final Report Reflective Shaped Pupil Mask Fabrication and Characterization

B. Balasubramanian,E. Cady,P. Echternach,N. Kasdin, Brian, Kern,J. Krist,Richard Muller, B. Nemati,Keith D. Patterson,I. Poberezhskiy, A., J. Riggs, Daniel Ryan,V. White,K. Yee,Hanying Zhou,N. Zimmerman

semanticscholar（2015）

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Abstract

In December 2013, NASA announced the selection of the Occulting Mask Coronagraph (OMC) as the primary architecture for the WFIRST/AFTA coronagraph instrument. OMC is a point design that is convertible between Shaped Pupil Coronagraph (SPC) and Hybrid Lyot Coronagraph (HLC) modes of operation. NASA set the objective of maturing the WFIRST/AFTA coronagraph to Technology Readiness Level (TRL) 5 by 9/30/2016. To this end, a technology development plan was drafted and approved that defined 9 milestones in fiscal years 2014-2016 that marked significant accomplishments on the path toward reaching TRL-5. The first key milestone was worded as:

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