OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 13 — May. 1, 2002
  • pp: 2381–2389

Wind-induced deformations in a segmented mirror

Stephen Padin  »View Author Affiliations


Applied Optics, Vol. 41, Issue 13, pp. 2381-2389 (2002)
http://dx.doi.org/10.1364/AO.41.002381


View Full Text Article

Enhanced HTML    Acrobat PDF (172 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

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.

© 2002 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7060) Atmospheric and oceanic optics : Turbulence
(220.1000) Optical design and fabrication : Aberration compensation

History
Original Manuscript: November 1, 2001
Revised Manuscript: January 29, 2002
Published: May 1, 2002

Citation
Stephen Padin, "Wind-induced deformations in a segmented mirror," Appl. Opt. 41, 2381-2389 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-13-2381


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. F. F. Forbes, “The effects of wind loads on large telescopes and their enclosures,” in ESO Conference on Very Large Telescopes and their Instrumentation, ESO Rep. 30, M.-H. Ulrich, ed. (European Southern Observatory, Garching, Germany, 1988), pp. 831–843.
  2. J. E. Nelson, T. S. Mast, and FaberS. M., eds., Design of the Keck Observatory and Telescope, Keck Observatory Rep. 90 (Keck Observatory, Kamuela, Hawaii, 1985).
  3. G. Chanan, J. E. Nelson, C. Ohara, E. Sirko, “Design issues for the active control system of the California Extremely Large Telescope (CELT),” in Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation and Commissioning, T. Anderson, ed., Proc. SPIE4004, 363–372 (2000). [CrossRef]
  4. D. G. MacMartin, T. S. Mast, G. Chanan, J. E. Nelson, “Active control issues for the California Extremely Large Telescope,” presented at the AIAA Guidance, Navigation, and Control Conference, Montreal, 6–9 Aug. 2001 (American Institute of Aeronautics and Astronautics, Reston, Va., 2001), paper AIAA-2001-4035.
  5. R. J. Noll, “Zernike polynomials and atmospheric turbulence,” J. Opt. Soc. Am. 66, 207–211 (1976). [CrossRef]
  6. F. Roddier, M. J. Northcott, J. E. Graves, D. L. McKenna, “One-dimensional spectra of turbulence-induced Zernike abberations: time-delay and isoplanacity error in partial adaptive compensation,” J. Opt. Soc. Am. A 10, 957–965 (1993). [CrossRef]
  7. F. Roddier, ed., Adaptive Optics in Astronomy (Cambridge University, Cambridge, UK, 1999), Chap. 3. [CrossRef]
  8. F. Roddier, “The effects of atmospheric turbulence in optical astronomy,” in Progress in Optics, E. Wolf, ed. (North-Holland, Amsterdam, 1981), Vol. 19, pp. 281–376. [CrossRef]
  9. V. I. Tatarskii, The Effects of the Turbulent Atmosphere on Wave Propagation (U.S. Department of Commerce, Springfield, Va., 1971).
  10. D. L. Fried, “Statistics of a geometric representation of wavefront distortion,” J. Opt. Soc. Am. 55, 1427–1435 (1965). [CrossRef]
  11. A. Ishimaru, Wave Propagation and Scattering in Random Media (Academic, New York, 1978), Vol. 2.
  12. J. W. Hardy, Adaptive Optics for Astronomical Telescopes (Oxford University, Oxford, UK, 1998), Chap. 3.
  13. N. Roddier, “Atmospheric wavefront simulation using Zernike polynomials,” Opt. Eng. 29, 1174–1180 (1990). [CrossRef]
  14. M. K. Cho, L. M. Stepp, S. Kim, “Wind buffeting effects on the Gemini 8m primary mirrors,” in Optomechanical Design and Engineering 2001, A. E. Hatheway, ed., Proc. SPIE.4444, 302–314 (2001). [CrossRef]
  15. S. Timoshenko, S. Woinowsky-Krieger, Theory of Plates and Shells (McGraw-Hill, New York, 1959), Chap. 3.
  16. T. S. Mast, J. E. Nelson, “Segmented mirror control system hardware for CELT,” in Optical Design, Materials, Fabrication and Maintenance, P. Dierickx, ed., Proc. SPIE4003, 226–240 (2000). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited