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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 20 — Jul. 10, 2008
  • pp: 3631–3636

Calibration of force actuators on an adaptive secondary prototype

Davide Ricci, Armando Riccardi, and Daniela Zanotti  »View Author Affiliations

Applied Optics, Vol. 47, Issue 20, pp. 3631-3636 (2008)

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In the context of the Large Binocular Telescope project, we present the results of force actuator calibrations performed on an adaptive secondary prototype called P45, a thin deformable glass with magnets glued onto its back. Electromagnetic actuators, controlled in a closed loop with a system of internal metrology based on capacitive sensors, continuously deform its shape to correct the distortions of the wavefront. Calibrations of the force actuators are needed because of the differences between driven forces and measured forces. We describe the calibration procedures and the results, obtained with errors of less than 1.5%.

© 2008 Optical Society of America

OCIS Codes
(350.1260) Other areas of optics : Astronomical optics
(350.1270) Other areas of optics : Astronomy and astrophysics
(220.1080) Optical design and fabrication : Active or adaptive optics

ToC Category:
Optical Design and Fabrication

Original Manuscript: January 14, 2008
Revised Manuscript: April 3, 2008
Manuscript Accepted: May 23, 2008
Published: July 7, 2008

Davide Ricci, Armando Riccardi, and Daniela Zanotti, "Calibration of force actuators on an adaptive secondary prototype," Appl. Opt. 47, 3631-3636 (2008)

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  1. F. Roddier, Adaptive Optics in Astronomy (Cambridge University Press, 1999). [CrossRef]
  2. C. Divoux, O. Cugat, G. Reyne, J. Boussey-Said, and S. Basrour, “Deformable mirror using magnetic membranes: application to adaptive optics in astrophysics,” IEEE Trans. Magn. 34, 3564-3567 (1998). [CrossRef]
  3. D. Brousseau, E. F. Borra, H. Jean-Ruel, J. Parent, and A. Ritcey, “A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations,” Opt. Express 14, 11486-11493 (2006). [CrossRef] [PubMed]
  4. E. J. Fernandez, L. Vabre, B. Hermann, A. Unterhuber, B. Povazay, and W. Drexler, “Adaptive optics with a magnetic deformable mirror: applications in the human eye,” Opt. Express 14, 8900-8917 (2006). [CrossRef] [PubMed]
  5. P. Salinari, C. del Vecchio, and V. Biliotti, “A study of an adaptive secondary mirror,” in Active and Adaptive Optics, F.Merkle, ed., Vol. 48 of Proceedings of the International Commission for Optics 16--Satellite Conference, pp. 247-253 (ICO, 1993).
  6. A. Riccardi, G. Brusa, C. del Vecchio, R. Baisi, M. Andrighettoni, D. Gallieni, F. Zocchi, M. Lloyd-Hart, H. M. Martin, and F. Wildi, “The adaptive secondary mirror for the 6.5 conversion of the Multiple Mirror Telescope,” in Vol. 58 of 2002 European Southern Observatory Conference and Workshop Proceedings, E.Vernet, R.Ragazzoni, S.Esposito, and N.Hubin, eds., (ESO, 2002), pp. 55-64.
  7. G. Brusa, A. Riccardi, F. P. Wildi, M. Lloyd-Hart, H. M. Martin, R. Allen, D. L. Fisher, D. L. Miller, R. Biasi, D. Gallieni, and F. Zocchi, “MMT adaptive secondary: first AO closed-loop results,” Proc. SPIE 5169, 26-36 (2003). [CrossRef]
  8. A. Riccardi, G. Brusa, P. Salinari, D. Gallieni, R. Biasi, M. Andrighettoni, and H. M. Martin, “Adaptive secondary mirrors for the Large Binocular Telescope,” Proc. SPIE 4839, 721-732 (2003). [CrossRef]
  9. A. Riccardi, G. Brusa, M. Xompero, D. Zanotti, C. del Vecchio, P. Salinari, P. Ranfagni, D. Gallieni, R. Biasi, M. Andrighettoni, S. Miller, and P. Mantegazza, “The adaptive secondary mirrors for the Large Binocular Telescope: a progress report,” Proc. SPIE 5490, 1564-1571 (2004). [CrossRef]
  10. A. Riccardi, M. Xompero, and L. Busoni, “Fitting error analysis for the VLT deformable secondary mirror,” Proc. SPIE . 6272, 627240 (2006).
  11. C. del Vecchio, “Aluminum reference plate, heat sink, and actuator design for an adaptive secondary mirror,” Proc. SPIE 3353, 839-849 (1998). [CrossRef]
  12. W. H. Press, S. A. Teukolsky, W. T. Vetterling, and B. P. Flannery, Numerical Recipes in C: The Art of Scientific Computing (Cambridge University Press, 1992).

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