Space beam combiner for long-baseline interferometry

Yao Lin; Randall D. Bartos; Robert P. Korechoff; Stuart B. Shaklan

doi:10.1117/12.347069

27 April 1999 Space beam combiner for long-baseline interferometry

Yao Lin, Randall D. Bartos, Robert P. Korechoff, Stuart B. Shaklan

Proceedings Volume 3649, Sensors, Cameras, and Systems for Scientific/Industrial Applications; (1999) https://doi.org/10.1117/12.347069
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

An experimental beam combiner (BC) is being developed to support the space interferometry program at the JPL. The beam combine forms the part of an interferometer where star light collected by the sidestats or telescopes is brought together to produce white light fringes, and to provide wavefront tilt information via guiding spots and beam walk information via shear spots. The assembly and alignment of the BC has been completed. The characterization test were performed under laboratory conditions with an artificial star and optical delay line. Part of each input beam was used to perform star tracking. The white light interference fringes were obtained over the selected wavelength range from 450 nm to 850 nm. A least-square fit process was used to analyze the fringe initial phase, fringe visibilities and shift errors of the optical path difference in the delay line using the dispersed white-light fringes at different OPD positions.

Citation Download Citation

Yao Lin, Randall D. Bartos, Robert P. Korechoff, and Stuart B. Shaklan "Space beam combiner for long-baseline interferometry", Proc. SPIE 3649, Sensors, Cameras, and Systems for Scientific/Industrial Applications, (27 April 1999); https://doi.org/10.1117/12.347069

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