SIM white-light on-board processing algorithms

Mark H. Milman; Joseph Catanzarite

doi:10.1117/12.460853

26 February 2003 SIM white-light on-board processing algorithms

Mark H. Milman, Joseph Catanzarite

Proceedings Volume 4852, Interferometry in Space; (2003) https://doi.org/10.1117/12.460853
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The Space Interferometry Mission (SIM) is a space-based long baseline optical interferometer designed to perform precision astrometry to an unprecedented accuracy. Highly accurate white light fringe estimation is an important enabling technology for the success of SIM. To accomplish this, the combined light from the two arms of the interferometer is sent through a prism so that fringes formed at different wavelengths are dispersed across a number of spectral channels. The relative optical path difference (OPD) between the two arms is modulated so that an estimate of the phase in each of the channels can be obtained using phase shifting interferometry (PSI) techniques. The present paper presents several of the difficulties encountered in white light fringe estimation for SIM, and offers a number of alternatives for mitigating them.

Citation Download Citation

Mark H. Milman and Joseph Catanzarite "SIM white-light on-board processing algorithms", Proc. SPIE 4852, Interferometry in Space, (26 February 2003); https://doi.org/10.1117/12.460853

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