Coarse phasing of segmented mirrors using a dispersed fringe sensor

Eric H. Smith; Gopal Vasudevan; Robert D. Reardon; Robert Bernier; Kenneth J. Triebes

doi:10.1117/12.461577

5 March 2003 Coarse phasing of a segmented mirror using a dispersed fringe sensor

Eric H. Smith, Gopal Vasudevan, Robert D. Reardon, Robert Bernier, Kenneth J. Triebes

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461577
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Dispersed fringe sensor (DFS) using broadband point source can unambiguously estimate piston to several hundred microns. We demonstrate a rapid technique to analyze the data from a DFS. The technique is less susceptible to higher order aberrations and returns the average phase difference between two aperture elements.

Citation Download Citation

Eric H. Smith, Gopal Vasudevan, Robert D. Reardon, Robert Bernier, and Kenneth J. Triebes "Coarse phasing of a segmented mirror using a dispersed fringe sensor", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461577

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