Hagelberg, Janis and Restori, Nathanaël and Wildi, Francois and Chazelas, Bruno and Baranec, Christoph and Guyon, Olivier and Genolet, Ludovic and Sordet, Michaël and Riddle, Reed (2020) KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile. In: Adaptive Optics Systems VII. Proceedings of SPIE. No.11448. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114487G. ISBN 9781510636835. https://resolver.caltech.edu/CaltechAUTHORS:20201222-122132120
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Abstract
KalAO is a natural guide star adaptive optics (AO) imager to be installed on the second Nasmyth focus of the 1.2m Euler Swiss telescope in La Silla, Chile. The initial design of the system is inspired on RoboAO with modifications in order to operate in natural guide star (NGS) mode. KalAO was built to search for binarity in planet hosting stars by following-up candidates primarily from the TESS satellite survey. The optical design is optimised for the 450-900 nm wavelength range and is fitted with SDSS g,r,i,z filters. The system is designed for wavefront control down to I-magnitude 11 stars in order to probe the same parameter space as radial velocity instruments such as HARPS and NIRPS. The principal components of the system are an 11x11 10.9 cm sub-apertures Electron Multiplying CCD (EMCCD) Shack-Hartmann wavefront sensor, a 140 actuators Microelectromechanical systems (MEMS) deformable mirror, a fast tip/tilt mirror, and a graphics processing unit (GPU) powered glycol cooled real-time computer. It is designed to run at up to 1.8kHz in order to detect companions as close as the 150mas visible-light diffraction limit. The real-time adaptive optics control is using the CACAO software running on GPUs. The instrument is planned for commissioning early 2021 in Chile if the covid restrictions are lifted.
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| Additional Information: | © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). This project is supported by SNSF through the Ambizione grant #PZ00P2_180098 (PI. Janis Hagelberg). | ||||||||||||
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| Subject Keywords: | Adaptive optics, wave-front sensing, optics, astronomy, exoplanets | ||||||||||||
| Series Name: | Proceedings of SPIE | ||||||||||||
| Issue or Number: | 11448 | ||||||||||||
| DOI: | 10.1117/12.2576315 | ||||||||||||
| Record Number: | CaltechAUTHORS:20201222-122132120 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20201222-122132120 | ||||||||||||
| Official Citation: | Janis Hagelberg, Nathanaël Restori, François Wildi, Bruno Chazelas, Christoph Baranec, Olivier Guyon, Ludovic Genolet, Michaël Sordet, and Reed Riddle "KalAO the swift adaptive optics imager on the 1.2m Euler Swiss telescope in La Silla, Chile", Proc. SPIE 11448, Adaptive Optics Systems VII, 114487G (13 December 2020); https://doi.org/10.1117/12.2576315 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 107256 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||
| Deposited On: | 22 Dec 2020 20:31 | ||||||||||||
| Last Modified: | 16 Nov 2021 19:01 |
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