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Proceedings Paper

The ERIS adaptive optics system
Author(s): Enrico Marchetti; Enrico Fedrigo; Miska Le Louarn; Pierre-Yves Madec; Christian Soenke; Roland Brast; Ralf Conzelmann; Bernard Delabre; Michel Duchateau; Christoph Frank; Barbara Klein; Paola Amico; Norbert Hubin; Simone Esposito; Jacopo Antichi; Luca Carbonaro; Alfio Puglisi; Fernando Quirós-Pacheco; Armando Riccardi; Marco Xompero
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Paper Abstract

The Enhanced Resolution Imager and Spectrograph (ERIS) is the new Adaptive Optics based instrument for ESO’s VLT aiming at replacing NACO and SINFONI to form a single compact facility with AO fed imaging and integral field unit spectroscopic scientific channels. ERIS completes the instrument suite at the VLT adaptive telescope. In particular it is equipped with a versatile AO system that delivers up to 95% Strehl correction in K band for science observations up to 5 micron It comprises high order NGS and LGS correction enabling the observation from exoplanets to distant galaxies with a large sky coverage thanks to the coupling of the LGS WFS with the high sensitivity of its visible WFS and the capability to observe in dust embedded environment thanks to its IR low order WFS. ERIS will be installed at the Cassegrain focus of the VLT unit hosting the Adaptive Optics Facility (AOF). The wavefront correction is provided by the AOF deformable secondary mirror while the Laser Guide Star is provided by one of the four launch units of the 4 Laser Guide Star Facility for the AOF. The overall layout of the ERIS AO system is extremely compact and highly optimized: the SPIFFI spectrograph is fed directly by the Cassegrain focus and both the NIX’s (IR imager) and SPIFFI’s entrance windows work as visible/infrared dichroics. In this paper we describe the concept of the ERIS AO system in detail, starting from the requirements and going through the estimated performance, the opto-mechanical design and the Real-Time Computer design.

Paper Details

Date Published: 21 July 2014
PDF: 15 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914826 (21 July 2014); doi: 10.1117/12.2055155
Show Author Affiliations
Enrico Marchetti, European Southern Observatory (Germany)
Enrico Fedrigo, European Southern Observatory (Germany)
Miska Le Louarn, European Southern Observatory (Germany)
Pierre-Yves Madec, European Southern Observatory (Germany)
Christian Soenke, European Southern Observatory (Germany)
Roland Brast, European Southern Observatory (Germany)
Ralf Conzelmann, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)
Michel Duchateau, European Southern Observatory (Germany)
Christoph Frank, European Southern Observatory (Germany)
Barbara Klein, European Southern Observatory (Germany)
Paola Amico, European Southern Observatory (Germany)
Norbert Hubin, European Southern Observatory (Germany)
Simone Esposito, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Jacopo Antichi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Luca Carbonaro, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Alfio Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Fernando Quirós-Pacheco, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Marco Xompero, INAF - Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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