Performance of the first-light adaptive optics system of LBT by means of CAOS simulations

Marcel Carbillet; Christophe Verinaud; Simone Esposito; Armando Riccardi; Alfio Puglisi; Bruno Femenia; Luca Fini

doi:10.1117/12.479721

7 February 2003 Performance of the first-light adaptive optics system of LBT by means of CAOS simulations

Marcel Carbillet, Christophe Verinaud, Simone Esposito, Armando Riccardi, Alfio Puglisi, Bruno Femenia, Luca Fini

Proceedings Volume 4839, Adaptive Optical System Technologies II; (2003) https://doi.org/10.1117/12.479721
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

This presentation reports the numerical simulations we have done in order to evaluate the performance of the first-light AO system of LBT. The simulation tool used for this purpose is the Software Package CAOS, applicable for a wide range of AO systems and for which a brief recall of the main features is made. The whole process of atmospheric propagation of light, wavefront sensing (using a complete model of the pyramid wavefront sensor), wavefront reconstruction using the LBT672 adaptive secondary mirror modes), and closing of the loop, is simulated. The results are given in terms of obtained Strehl ratios in J-, H-, and K-band. Estimation of the resulting sky-coverage in K-band for different regions of the sky are also expressed. A comparison with the performance that would be obtained by using a Shack-Hartmann sensor is presented, confirming the gain achievable with the pyramid sensor.

Citation Download Citation

Marcel Carbillet, Christophe Verinaud, Simone Esposito, Armando Riccardi, Alfio Puglisi, Bruno Femenia, and Luca Fini "Performance of the first-light adaptive optics system of LBT by means of CAOS simulations", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); https://doi.org/10.1117/12.479721

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