Share Email Print

Proceedings Paper

First light AO (FLAO) system for LBT: performance analysis and optimization
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We will present in this paper the performance analysis and optimization of the First Light AO (FLAO) system of the Large Binocular Telescope (LBT). The system comprises an adaptive secondary mirror (ASM) with 672 actuators (LBT672a unit) and a pyramid wavefront sensor (PWFS) with adjustable sampling of the telescope pupil from 30×30 down to 4×4 subapertures. The performances have been estimated by means of end-to-end simulations, scanning a range of reference star magnitudes and looking for the optimal set of parameters maximizing the on-axis Strehl Ratio. Specific additional error sources have been accounted for and analyzed separately, such as mis-registration errors, mis-calibration issues, and the effect of telescope vibrations. Taking into account the considered error sources we defined the baseline and goal performances of the FLAO system. The acceptance test of the FLAO system took place in December 2009, demonstrating actual FLAO performances between baseline and goal estimates. The commissioning of the FLAO system to the LBT telescope is currently ongoing until December 2010.

Paper Details

Date Published: 27 July 2010
PDF: 10 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77363H (27 July 2010); doi: 10.1117/12.858208
Show Author Affiliations
Fernando Quirós-Pacheco, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Lorenzo Busoni, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Guido Agapito, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Simone Esposito, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Enrico Pinna, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Alfio Puglisi, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF-Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

© SPIE. Terms of Use
Back to Top