Published May 1, 2002
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Journal Article
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Wind-induced deformations in a segmented mirror
- Creators
- Padin, Stephen
Chicago
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Abstract
A Zernike expansion of wind-induced deformations in a segmented mirror is described. The wind model is a frozen turbulent field with a Kolmogorov spectrum for scales smaller than the outer scale and a flat spectrum for scales larger than the outer scale. The approach allows a mode-by-mode comparison of the wave-front error contributions from atmospheric phase distortions, wind-induced deformations, and the mirror control system noise. This is used to design a controller that minimizes the mirror surface errors by application of corrections based on edge sensor measurements and wave-front measurements on a guide star.
Additional Information
© 2002 Optical Society of America Received 1 November 2001; revised manuscript received 29 January 2002. The author thanks R. Dekany, D. MacMartin, and K. Matthews for helpful comments and suggestions. This research was supported by the Caltech Discovery Fund.Files
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Additional details
- Eprint ID
- 5667
- Resolver ID
- CaltechAUTHORS:PADao02
- Created
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2006-10-27Created from EPrint's datestamp field
- Updated
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2019-10-02Created from EPrint's last_modified field