Design of an holographic off-axis calibration light source for ARGOS at the LBT

Christian Schwab; Wolfgang Gässler; Diethard Peter; Thomas Blümchen; Simon Aigner; Andreas Quirrenbach

doi:10.1051/ao4elt/201004007

Design of an holographic off-axis calibration light source for ARGOS at the LBT

Christian Schwab, Wolfgang Gässler, Diethard Peter, Thomas Blümchen, Simon Aigner, Andreas Quirrenbach

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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Abstract

We report on the design of an artificial light source for ARGOS, the multiple Rayleigh laser guide star (LGS) facility at the Large Binocular Telescope (LBT). Our light source mimics the expected night-time illumination of the adaptive secondary mirror (ASM) by the laser beacons very accurately and provides a way to check the achieved performance, allowing thorough testing of the system during day time. The optical design makes use of computer generated holograms (CGH) and strong aspheres to achieve a very small residual wavefront error. Additional structures on the CGH facilitate quick and precise alignment of the optics in the prime focus. We demonstrate that the scheme can be applied to the current European Extremely Large Telescope (E-ELT) design in a similar way.

Original language	English
Title of host publication	1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT)
Subtitle of host publication	proceedings
Editors	Y. Clenet, J. M. Conan, T. Fusco, G. Rousset
Place of Publication	France
Publisher	EDP Sciences
Pages	04007-1-04007-5
Number of pages	5
ISBN (Print)	9782759804962
DOIs	https://doi.org/10.1051/ao4elt/201004007
Publication status	Published - 2010
Externally published	Yes
Event	Conference on Adaptive Optics for Extremely Large Telescopes (1st : 2009) - Paris, France Duration: 22 Jun 2009 → 26 Jun 2009

Conference

Conference	Conference on Adaptive Optics for Extremely Large Telescopes (1st : 2009)
City	Paris, France
Period	22/06/09 → 26/06/09

Bibliographical note

Copyright the Author(s) 2010. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Access to Document

10.1051/ao4elt/201004007

Publisher version (open access)Final published version, 672 KBLicence: Unspecified

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Schwab, C., Gässler, W., Peter, D., Blümchen, T., Aigner, S., & Quirrenbach, A. (2010). Design of an holographic off-axis calibration light source for ARGOS at the LBT. In Y. Clenet, J. M. Conan, T. Fusco, & G. Rousset (Eds.), 1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT): proceedings (pp. 04007-1-04007-5). France: EDP Sciences. https://doi.org/10.1051/ao4elt/201004007

Schwab, Christian ; Gässler, Wolfgang ; Peter, Diethard ; Blümchen, Thomas ; Aigner, Simon ; Quirrenbach, Andreas. / Design of an holographic off-axis calibration light source for ARGOS at the LBT. 1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT): proceedings. editor / Y. Clenet ; J. M. Conan ; T. Fusco ; G. Rousset. France : EDP Sciences, 2010. pp. 04007-1-04007-5

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title = "Design of an holographic off-axis calibration light source for ARGOS at the LBT",

abstract = "We report on the design of an artificial light source for ARGOS, the multiple Rayleigh laser guide star (LGS) facility at the Large Binocular Telescope (LBT). Our light source mimics the expected night-time illumination of the adaptive secondary mirror (ASM) by the laser beacons very accurately and provides a way to check the achieved performance, allowing thorough testing of the system during day time. The optical design makes use of computer generated holograms (CGH) and strong aspheres to achieve a very small residual wavefront error. Additional structures on the CGH facilitate quick and precise alignment of the optics in the prime focus. We demonstrate that the scheme can be applied to the current European Extremely Large Telescope (E-ELT) design in a similar way.",

author = "Christian Schwab and Wolfgang G{\"a}ssler and Diethard Peter and Thomas Bl{\"u}mchen and Simon Aigner and Andreas Quirrenbach",

note = "Copyright the Author(s) 2010. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

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doi = "10.1051/ao4elt/201004007",

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Schwab, C, Gässler, W, Peter, D, Blümchen, T, Aigner, S & Quirrenbach, A 2010, Design of an holographic off-axis calibration light source for ARGOS at the LBT. in Y Clenet, JM Conan, T Fusco & G Rousset (eds), 1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT): proceedings. EDP Sciences, France, pp. 04007-1-04007-5, Conference on Adaptive Optics for Extremely Large Telescopes (1st : 2009), Paris, France, 22/06/09. https://doi.org/10.1051/ao4elt/201004007

Design of an holographic off-axis calibration light source for ARGOS at the LBT. / Schwab, Christian; Gässler, Wolfgang; Peter, Diethard; Blümchen, Thomas; Aigner, Simon; Quirrenbach, Andreas.

1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT): proceedings. ed. / Y. Clenet; J. M. Conan; T. Fusco; G. Rousset. France : EDP Sciences, 2010. p. 04007-1-04007-5.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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T1 - Design of an holographic off-axis calibration light source for ARGOS at the LBT

AU - Schwab, Christian

AU - Gässler, Wolfgang

AU - Peter, Diethard

AU - Blümchen, Thomas

AU - Aigner, Simon

AU - Quirrenbach, Andreas

N1 - Copyright the Author(s) 2010. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2010

Y1 - 2010

N2 - We report on the design of an artificial light source for ARGOS, the multiple Rayleigh laser guide star (LGS) facility at the Large Binocular Telescope (LBT). Our light source mimics the expected night-time illumination of the adaptive secondary mirror (ASM) by the laser beacons very accurately and provides a way to check the achieved performance, allowing thorough testing of the system during day time. The optical design makes use of computer generated holograms (CGH) and strong aspheres to achieve a very small residual wavefront error. Additional structures on the CGH facilitate quick and precise alignment of the optics in the prime focus. We demonstrate that the scheme can be applied to the current European Extremely Large Telescope (E-ELT) design in a similar way.

AB - We report on the design of an artificial light source for ARGOS, the multiple Rayleigh laser guide star (LGS) facility at the Large Binocular Telescope (LBT). Our light source mimics the expected night-time illumination of the adaptive secondary mirror (ASM) by the laser beacons very accurately and provides a way to check the achieved performance, allowing thorough testing of the system during day time. The optical design makes use of computer generated holograms (CGH) and strong aspheres to achieve a very small residual wavefront error. Additional structures on the CGH facilitate quick and precise alignment of the optics in the prime focus. We demonstrate that the scheme can be applied to the current European Extremely Large Telescope (E-ELT) design in a similar way.

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Schwab C, Gässler W, Peter D, Blümchen T, Aigner S, Quirrenbach A. Design of an holographic off-axis calibration light source for ARGOS at the LBT. In Clenet Y, Conan JM, Fusco T, Rousset G, editors, 1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT): proceedings. France: EDP Sciences. 2010. p. 04007-1-04007-5 https://doi.org/10.1051/ao4elt/201004007