Active multimodal control of a floppy telescope structure

Jeffrey T. Baker; Sergio R. Restaino; Ty Martinez; Jeffrey Foster Friedman

doi:10.1117/12.451955

6 November 2002 Active multimodal control of a floppy telescope structure

Jeffrey T. Baker, Sergio R. Restaino, Ty Martinez, Jeffrey Foster Friedman

Proceedings Volume 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV; (2002) https://doi.org/10.1117/12.451955
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Telescope structures are typically required to attain a certain degree of mechanical rigidity in order to achieve the desired optical performance goals, yet there are many applications where weight is either at a premium or local conditions exist that pre-empt optimal mechanical stability requirements. What is needed is a system which can sense and compensate for the opto-mechanical instabilities and correct them in real-time, preferably without "stealing" light from the optical system. We propose using tiny MEMS-based inertial reference sensors to measure the structural dynamics, and, using an appropriate model and coordinate transformations, correct in real-time the tip/tilt, focus, and possibly higher order errors of the optical system aberrations using MEMS-based deformable mirrors and/or our own tip/tilt + piston mirrors.

Citation Download Citation

Jeffrey T. Baker, Sergio R. Restaino, Ty Martinez, and Jeffrey Foster Friedman "Active multimodal control of a floppy telescope structure", Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, (6 November 2002); https://doi.org/10.1117/12.451955

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