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Browsing by Subject "Zernike wavefront sensor"

Browsing by Subject "Zernike wavefront sensor"

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  • Picometer Differential Wavefront Metrology by Nonlinear Zernike Wavefront Sensing for LUVOIR 
    Moore, Dustin B.; Redding, David C. (Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2018, 2018-06-12)
    We propose the Nonlinear Zernike wavefront sensor (NLZWFS) for out-of-band differential wavefront sensing to augment primary mirror stability on LUVOIR and similar mission concepts during exoplanet coronagraphy. This new ...
  • WFIRST Low Order WaveFront Sensing and Control (LOWFS/C) performance on line-of-sight disturbances from multiple reaction wheels 
    Shi, Fang; Shields, Joel; Truong, Tuan; Seo, Byoung-Joon; Fregoso, Felipe; Kern, Brian; Marx, David; Patteson, Keith; Mejia Prada, Camilo; Shaw, John; Shelton, Chris (Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2019, 2019-08-11)
    In this paper we will describe the LOWFS/C LoS performance test in which the injected LoS disturbances are derived from all six reaction wheels on WFIRST, each with an independent varying wheel speed profile modeled for ...
  • WFIRST Low Order Wavefront Sensing and Control Testbed Performance under Flight Like Photon Flux 
    Shi, Fang; Seo, Byoung-Joon; Cady, Eric; Kern, Brian; Lam, Raymond; Marx, David; Patterson, Keith; Prada, Camilo Mejia; Shaw, John; Shelton, Chris; Shields, Joel; Tang, Hong; Truong, Tuan (Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2018, 2018-06-12)
    To maintain the required performance for the WFIRST Coronagraph Instrument (CGI) in a realistic space environment, a Low Order Wavefront Sensing and Control (LOWFS/C) subsystem is necessary. The WFIRST CGI LOWFS/C subsystem ...