Performance simulation of the ERIS pyramid wavefront sensor module in the VLT adaptive optics facility

Fernando Quirós-Pacheco; Guido Agapito; Armando Riccardi; Simone Esposito; Miska Le Louarn; Enrico Marchetti

doi:10.1117/12.927115

13 September 2012 Performance simulation of the ERIS pyramid wavefront sensor module in the VLT adaptive optics facility

Fernando Quirós-Pacheco, Guido Agapito, Armando Riccardi, Simone Esposito, Miska Le Louarn, Enrico Marchetti

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84475L (2012) https://doi.org/10.1117/12.927115
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

This paper presents the performance analysis based on numerical simulations of the Pyramid Wavefront sensor Module (PWM) to be included in ERIS, the new Adaptive Optics (AO) instrument for the Adaptive Optics Facility (AOF). We have analyzed the performance of the PWM working either in a low-order or in a high-order wavefront sensing mode of operation. We show that the PWM in the high-order sensing mode can provide SR > 90% in K band using bright guide stars under median seeing conditions (0.85 arcsec seeing and 15 m/s of wind speed). In the low-order sensing mode, the PWM can sense and correct Tip-Tilt (and if requested also Focus mode) with the precision required to assist the LGS observations to get an SR > 60% and > 20% in K band, using up to a ~16.5 and ~19.5 R-magnitude guide star, respectively.

Citation Download Citation

Fernando Quirós-Pacheco, Guido Agapito, Armando Riccardi, Simone Esposito, Miska Le Louarn, and Enrico Marchetti "Performance simulation of the ERIS pyramid wavefront sensor module in the VLT adaptive optics facility", Proc. SPIE 8447, Adaptive Optics Systems III, 84475L (13 September 2012); https://doi.org/10.1117/12.927115

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