On-sky performance of KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile
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%.
Authors
- Michaël Sordet
- Gilles Simon (ORCID: https://orcid.org/0000-0002-5909-6524)
- Benjamin Küng
- F. Bouchy (ORCID: https://orcid.org/0000-0002-7613-393X)
- Ludovic Genolet
- Samuel Rihs
- Christoph Baranec (ORCID: https://orcid.org/0000-0002-1917-9157)
- J. Hagelberg (ORCID: https://orcid.org/0000-0002-1096-1433)
- Bruno Chazelas
- W. Ceva (ORCID: https://orcid.org/0009-0009-7691-6027)
- D. Ségransan (ORCID: https://orcid.org/0000-0003-2355-8034)
- F. Wildi (ORCID: https://orcid.org/0000-0002-9216-4402)
- Anthony Carvalho
- Nicolas Blind (ORCID: https://orcid.org/0000-0003-4232-1999)
- Olivier Guyon (ORCID: https://orcid.org/0000-0002-1097-9908)
- X. Bonfıls (ORCID: https://orcid.org/0000-0001-9003-8894)
- Uriel Conod
- Nathanaël Restori (ORCID: https://orcid.org/0000-0001-5628-5269)
- N. Buchschacher (ORCID: https://orcid.org/0000-0002-3697-1541)
- Arnaud Sevin (ORCID: https://orcid.org/0009-0005-4176-7632)
- Robin Schnell
- F. Pepe (ORCID: https://orcid.org/0000-0002-9815-773X)
- C. Lovis (ORCID: https://orcid.org/0000-0001-7120-5837)
- Carlos Cantero
- Sébastien Bovay
- S. Udry (ORCID: https://orcid.org/0000-0001-7576-6236)
- Vincent Déo (ORCID: https://orcid.org/0000-0003-4514-7906)
- Fabien Alesina
- Adrien Crausaz
- Mohammad Rashidi (ORCID: https://orcid.org/0000-0003-1718-5438)
- Léonie Dezempte
- Casper Farret
- Muskan Schinde
- Malik Algelly
- Ian Hughes
- L. Weber
Institutions
- Centre National de la Recherche Scientifique (FR)
- University of Arizona (US)
- National Institutes of Natural Sciences (JP)
- Université Paris Cité (FR)
- Observatoire de Paris (FR)
- Sorbonne Université (FR)
- Institut de Planétologie et d'Astrophysique de Grenoble (FR)
- Laboratoire d’études spatiales et d’instrumentation en astrophysique (FR)
- Université Grenoble Alpes (FR)
Publication Details
- Published
- 2024-09-03
- DOI
- https://doi.org/10.1117/12.3019089
- Primary Topic
- Adaptive optics and wavefront sensing
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Université de Genève