Non-redundant masking ideas on JWST

Anand Sivaramakrishnan; Anthony Cheetham; Alexandra Z. Greenbaum; Peter G. Tuthill; D. Scott Acton; Benjamin Pope; Frantz Martinache; Deepashri Thatte; Edmund P. Nelan

doi:10.1117/12.2056639

28 August 2014 Non-redundant masking ideas on JWST

Anand Sivaramakrishnan, Anthony Cheetham, Alexandra Z. Greenbaum, Peter G. Tuthill, D. Scott Acton, Benjamin Pope, Frantz Martinache, Deepashri Thatte, Edmund P. Nelan

Author Affiliations +

Proceedings Volume 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave; 91433S (2014) https://doi.org/10.1117/12.2056639
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

We present several engineering and algorithmic aspects of non-redundant masking (NRM) as they pertain to the James Webb Space Telescope (JWST). NRM's fundamental data structures have multiple uses in wavefront sensing as well in as high resolution imaging. Kernel phases are a full aperture generalization of NRM applicable to moderate and high Strehl ratio images. Eigenphases, the complement to kernel phases, provide wavefront sensing with single in-focus images. Thus this set of phases is relevant to wavefront sensing with routine science images on any Nyquist-sampled science camera on JWST. We attempt to organize these apparently diverse aspects of such Fizeau interferometry into an inter-related picture in order to facilitate their development and potential use on JWST and future space telescopes.

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Anand Sivaramakrishnan, Anthony Cheetham, Alexandra Z. Greenbaum, Peter G. Tuthill, D. Scott Acton, Benjamin Pope, Frantz Martinache, Deepashri Thatte, and Edmund P. Nelan "Non-redundant masking ideas on JWST", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91433S (28 August 2014); https://doi.org/10.1117/12.2056639

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