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13 September 1994 Free-beam delay line for a multiaperture optical space interferometer stabilized on a guide star
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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