On-sky performance of KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile

Janis Hagelberg; Nathanaël Restori; Damien Ségransan; Olivier Guyon; François Wildi; Bruno Chazelas; Christoph Baranec; Vincent Deo; Ludovic Genolet; Michaël Sordet; Fabien Alesina; Malik Algelly; Nicolas Blind; Xavier Bonfils; François Bouchy; Sebastien Bovay; Nicolas Buchschacher; Carles Cantero; Anthony Carvalho; William Ceva; Uriel Conod; Adrien Crausaz; Léonie Dezempte; Casper Farret; Ian Hughes; Benjamin Küng; Christophe Lovis; Francesco Pepe; Mohammad Rashidi; Samuel Rihs; Arnaud Sevin; Robin Schnell; Muskan Schinde; Gilles Simon; Stéphane Udry; Luc Weber

doi:10.1117/12.3019089

3 September 2024 On-sky performance of KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile

Janis Hagelberg, Nathanaël Restori, Damien Ségransan, Olivier Guyon, François Wildi, Bruno Chazelas, Christoph Baranec, Vincent Deo, Ludovic Genolet, Michaël Sordet, Fabien Alesina, Malik Algelly, Nicolas Blind, Xavier Bonfils, François Bouchy, Sebastien Bovay, Nicolas Buchschacher, Carles Cantero, Anthony Carvalho, William Ceva, Uriel Conod, Adrien Crausaz, Léonie Dezempte, Casper Farret, Ian Hughes, Benjamin Küng, Christophe Lovis, Francesco Pepe, Mohammad Rashidi, Samuel Rihs, Arnaud Sevin, Robin Schnell, Muskan Schinde, Gilles Simon, Stéphane Udry, Luc Weber

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 130970C (2024) https://doi.org/10.1117/12.3019089
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

We present first on-sky performance results of KalAO, the natural guide star adaptive optics imager on the 1.2m Swiss telescope in La Silla, Chile. It is designed to reach at least 30% Strehl in order to detect stellar companions as close as the 150mas in visible-light, at diffraction limit. KalAO was built to search for binarity in planet hosting stars by following-up planet candidates primarily from the TESS satellite survey. The optical design is optimised for the 450 to 900nm wavelength range and is fitted with SDSS griz filters. Wavefront control works down to I-magnitude 10 stars in order to probe the same parameter space as radial velocity instruments such as HARPS and NIRPS. The system first closed the loop on sky in November 2023 and reached diffraction limit imaging in February 2024. It can carry out AO corrected observation of up to 500 targets in one night, with a Strehl ratio of ≈30%.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Janis Hagelberg, Nathanaël Restori, Damien Ségransan, Olivier Guyon, François Wildi, Bruno Chazelas, Christoph Baranec, Vincent Deo, Ludovic Genolet, Michaël Sordet, Fabien Alesina, Malik Algelly, Nicolas Blind, Xavier Bonfils, François Bouchy, Sebastien Bovay, Nicolas Buchschacher, Carles Cantero, Anthony Carvalho, William Ceva, Uriel Conod, Adrien Crausaz, Léonie Dezempte, Casper Farret, Ian Hughes, Benjamin Küng, Christophe Lovis, Francesco Pepe, Mohammad Rashidi, Samuel Rihs, Arnaud Sevin, Robin Schnell, Muskan Schinde, Gilles Simon, Stéphane Udry, and Luc Weber "On-sky performance of KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile", Proc. SPIE 13097, Adaptive Optics Systems IX, 130970C (3 September 2024); https://doi.org/10.1117/12.3019089

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