21 July 2014 ARGOS laser system mechanical design
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Abstract
ARGOS, a multi-star adaptive optics system is designed for the wide-field imager and multi-object spectrograph LUCI on the LBT (Large Binocular Telescope). Based on Rayleigh scattering the laser constellation images 3 artificial stars (at 532 nm) per each of the 2 eyes of the LBT, focused at a height of 12 km (Ground Layer Adaptive Optics). The stars are nominally positioned on a circle 2’ in radius, but each star can be moved by up to 0.5’ in any direction. For all of these needs are following main subsystems necessary: 1. A laser system with its 3 Lasers (Nd:YAG ~18W each) for delivering strong collimated light as for LGS indispensable. 2. The Launch system to project 3 beams per main mirror as a 40 cm telescope to the sky. 3. The Wave Front Sensor with a dichroic mirror. 4. The dichroic mirror unit to grab and interpret the data. 5. A Calibration Unit to adjust the system independently also during day time. 6. Racks + platforms for the WFS units. 7. Platforms and ladders for a secure access. This paper should mainly demonstrate how the ARGOS Laser System is configured and designed to support all other systems.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Deysenroth, M. Honsberg, H. Gemperlein, J. Ziegleder, W. Raab, S. Rabien, L. Barl, W. Gässler, J. L. Borelli, "ARGOS laser system mechanical design", Proc. SPIE 9148, Adaptive Optics Systems IV, 91483H (21 July 2014); doi: 10.1117/12.2055727; https://doi.org/10.1117/12.2055727
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