Free-beam delay line for a multi-aperture optical space interferometer stabilized on a guide star

Bart Snijders; Ben C. Braam; Henk Bokhove

doi:10.1117/12.185275

13 September 1994 Free-beam delay line for a multiaperture optical space interferometer stabilized on a guide star

Bart Snijders, Ben C. Braam, Henk Bokhove

Proceedings Volume 2209, Space Optics 1994: Earth Observation and Astronomy; (1994) https://doi.org/10.1117/12.185275
Event: Space Optics '94, 1994, Garmisch, Germany

Abstract

A key technique for optical aperture synthesis instruments is the cophasing of the beams from the individual apertures. A cophasing system includes a number of delay lines for the adjustment of the optical path lengths. The design of a high-resolution delay line is based on the mission requirements of a space-borne interferometer. A cat's-eye type of retroreflector is the selected option for the optics. Three delay lines, including actuators and control electronics, have been built and have been tested in a dedicated setup, which includes a star simulator and a cophasing interferometer. The test results support the feasibility of the presented delay line concept.

Citation Download Citation

Bart Snijders, Ben C. Braam, and Henk Bokhove "Free-beam delay line for a multiaperture optical space interferometer stabilized on a guide star", Proc. SPIE 2209, Space Optics 1994: Earth Observation and Astronomy, (13 September 1994); https://doi.org/10.1117/12.185275

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