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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN 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)
http://dx.doi.org/10.1364/AO.47.003631


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Abstract

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

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

Citation
Davide Ricci, Armando Riccardi, and Daniela Zanotti, "Calibration of force actuators on an adaptive secondary prototype," Appl. Opt. 47, 3631-3636 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-20-3631


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References

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