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21 November 2017 Laser metrology and optic active control system for GAIA
F. D'Angelo, L. Bonino, S. Cesare, G. Castorina, S. Mottini, F. Bertinetto, M. Bisi, E. Canuto, F. Musso
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Proceedings Volume 10567, International Conference on Space Optics — ICSO 2006; 105670N (2017) https://doi.org/10.1117/12.2308154
Event: International Conference on Space Optics 2006, 2006, Noordwijk, Netherlands
Abstract
The Laser Metrology and Optic Active Control (LM&OAC) program has been carried out under ESA contract with the purpose to design and validate a laser metrology system and an actuation mechanism to monitor and control at microarcsec level the stability of the Basic Angle (angle between the lines of sight of the two telescopes) of GAIA satellite. As part of the program, a breadboard (including some EQM elements) of the laser metrology and control system has been built and submitted to functional, performance and environmental tests. In the followings we describe the mission requirements, the system architecture, the breadboard design, and finally the performed validation tests. Conclusion and appraisals from this experience are also reported.
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F. D'Angelo, L. Bonino, S. Cesare, G. Castorina, S. Mottini, F. Bertinetto, M. Bisi, E. Canuto, and F. Musso "Laser metrology and optic active control system for GAIA", Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105670N (21 November 2017); https://doi.org/10.1117/12.2308154
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KEYWORDS
Mirrors
Metrology
Laser metrology
Bragg cells
Control systems
Stars
Optical resonators
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