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Proceedings Paper

Performance of the first-light adaptive optics system of LBT by means of CAOS simulations
Author(s): Marcel Carbillet; Christophe Verinaud; Simone Esposito; Armando Riccardi; Alfio Puglisi; Bruno Femenia; Luca Fini
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Paper 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.

Paper Details

Date Published: 7 February 2003
PDF: 9 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.479721
Show Author Affiliations
Marcel Carbillet, Osservatorio Astrofisico di Arcetri/INAF (Spain)
Christophe Verinaud, Osservatorio Astrofisico di Arcetri/INAF (Spain)
Simone Esposito, Osservatorio Astrofisico di Arcetri/INAF (Spain)
Armando Riccardi, Osservatorio Astrofisico di Arcetri/INAF (Spain)
Alfio Puglisi, Osservatorio Astrofisico di Arcetri/INAF (Spain)
Bruno Femenia, Gran Telescopio Canarias/IAC (Italy)
Luca Fini, Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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