NAOS real-time computer for optimized closed-loop and online performance estimation

Details NAOS real-time computer for optimized closed-loop and online performance estimation NAOS real-time computer for optimized closed-loop and online performance estimation

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4007..659r&link_type=abstract

Proc. SPIE Vol. 4007, p. 659-670, Adaptive Optical Systems Technology, Peter L. Wizinowich; Ed.

Physics

Optics

5

Scientific paper

The Real Time Computer RTC is a key component of the Nasmyth Adaptive Optics System, controlling the 185 actuators of the deformable mirror from a 144 Shack-Hartmann subapertures wavefront sensor at a maximum frequency of 500 Hz. It also provides additional capabilities such as real time optimization of the control loop which is the warranty for NAOS to achieve a very good Strehl Ratio in a broad magnitude range (Mv equals 8 up to 18), on-line turbulence and performance estimations and finally capability to store and process the data necessary to the off-line PSF reconstruction algorithm. This RTC is also designed to be easily upgraded as for Laser Guide Star. Moreover all softwares can be easily adapted to control a curvature sensor as well as the hardware which can be used with the two types of wave front sensors.

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