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 proceedingConference proceeding contributionResearchpeer-review

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.
LanguageEnglish
Title of host publication1st International Conference on Adaptive Optics for Extremely Large Telescopes (AO4ELT)
Subtitle of host publicationproceedings
EditorsY. Clenet, J. M. Conan, T. Fusco, G. Rousset
Place of PublicationFrance
PublisherEDP Sciences
Pages04007-1-04007-5
Number of pages5
ISBN (Print)9782759804962
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventConference on Adaptive Optics for Extremely Large Telescopes (1st : 2009) - Paris, France
Duration: 22 Jun 200926 Jun 2009

Conference

ConferenceConference on Adaptive Optics for Extremely Large Telescopes (1st : 2009)
CityParis, France
Period22/06/0926/06/09

Fingerprint

light sources
telescopes
aspheric optics
laser guide stars
beacons
daytime
night
illumination
alignment
optics
mirrors
lasers

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.

Cite this

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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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.",
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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 proceedingConference proceeding contributionResearchpeer-review

TY - GEN

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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DO - 10.1051/ao4elt/201004007

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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