Calibration strategy and optics for ARGOS at the LBT

Christian Schwab; Diethard Peter; Simon Aigner

doi:10.1117/12.857231

14 July 2010 Calibration strategy and optics for ARGOS at the LBT

Christian Schwab, Diethard Peter, Simon Aigner

Proceedings Volume 7736, Adaptive Optics Systems II; 773630 (2010) https://doi.org/10.1117/12.857231
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Effective calibration procedures play an important role for the efficiency and performance of astronomical instrumentation. We report on the calibration scheme for ARGOS, the Laser Guide Star (LGS) facility at the LBT. An artificial light source is used to feign the real laser beacons and perform extensive testing of the system, independent of the time of day and weather conditions, thereby greatly enhancing the time available for engineering. Fibre optics and computer generated holograms (CGHs) are used to generate the necessary wavefront. We present the optomechanical design, and discuss the expected accuracy, as well as tolerances in assembly and alignment.

Citation Download Citation

Christian Schwab, Diethard Peter, and Simon Aigner "Calibration strategy and optics for ARGOS at the LBT", Proc. SPIE 7736, Adaptive Optics Systems II, 773630 (14 July 2010); https://doi.org/10.1117/12.857231

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