Translator Disclaimer
2 June 1995 Low-cost space structure experiment optical phasing control system
Author Affiliations +
A description is presented of a sparse aperture telescope system designed to automatically control piston and tilt errors of the optical wavefront. The main thrust of this project is to design a satellite with a sparse aperture optical system payload. In order to reduce risk, this project also includes a laboratory demonstration of the ability to automatically phase the two segments of the sparse primary, common secondary optical telescope. By simulating the degradation of fringe visibility due to disturbances, an error budget has been created to determine the payload and laboratory experiment design requirements. With a fringe visibility system goal of 0.5, the error budget allocates 0.72 visibility to both subaperture phasing and common mode tilt. The purpose of the ongoing laboratory experiment is to validate the automatic phasing control system. A 1/4 scale design of the flight telescope and full scale equivalents of the phasing control system were built for the laboratory test. The tilt control loops have demonstrated the required 100 Hz bandwidth, and the ability of the piston algorithm to sense a change in optical path difference has also been demonstrated.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David B. DeYoung, W. Bruce DeShetler, and Michael A. Kvasnack "Low-cost space structure experiment optical phasing control system", Proc. SPIE 2478, Space Telescopes and Instruments, (2 June 1995);


Modeling and initialization of a segmented telescope
Proceedings of SPIE (July 10 1992)
Development of the HAWC far-infrared camera for SOFIA
Proceedings of SPIE (September 30 2004)
Space-borne beam pointing
Proceedings of SPIE (May 01 1991)
The CCAT 25m diameter submillimeter-wave telescope
Proceedings of SPIE (September 27 2012)

Back to Top