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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 1528–1552

Curvature wavefront sensing performance evaluation for active correction of the Large Synoptic Survey Telescope (LSST)

Anastacia M. Manuel, Donald W. Phillion, Scot S. Olivier, Kevin L. Baker, and Brice Cannon  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 1528-1552 (2010)
http://dx.doi.org/10.1364/OE.18.001528


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Abstract

The Large Synoptic Survey Telescope (LSST) uses a novel, three-mirror, modified Paul-Baker design, with an 8.4-meter primary mirror, a 3.4-m secondary, and a 5.0-m tertiary, along with three refractive corrector lenses to produce a flat focal plane with a field of view of 9.6 square degrees. In order to maintain image quality during operation, the deformations and rigid body motions of the three large mirrors must be actively controlled to minimize optical aberrations, which arise primarily from forces due to gravity and thermal expansion. We describe the methodology for measuring the telescope aberrations using a set of curvature wavefront sensors located in the four corners of the LSST camera focal plane. We present a comprehensive analysis of the wavefront sensing system, including the availability of reference stars, demonstrating that this system will perform to the specifications required to meet the LSST performance goals.

© 2010 OSA

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(110.6770) Imaging systems : Telescopes

ToC Category:
Adaptive Optics

History
Original Manuscript: September 15, 2009
Revised Manuscript: December 8, 2009
Manuscript Accepted: January 1, 2010
Published: January 13, 2010

Citation
Anastacia M. Manuel, Donald W. Phillion, Scot S. Olivier, Kevin L. Baker, and Brice Cannon, "Curvature wavefront sensing performance evaluation for active correction of the Large Synoptic Survey Telescope (LSST)," Opt. Express 18, 1528-1552 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-2-1528


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