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Portail > Offres > Offre UMR7326-ANAMEK-002 - Analyseur de Surface d'onde innovant pour l'Optique Adaptative en Astronomie H/F

Innovative Wave Front Sensors for Astronomical Adaptive Optics

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : vendredi 23 avril 2021

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General information

Reference : UMR7326-ANAMEK-002
Workplace : MARSEILLE 13
Date of publication : Friday, April 02, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 October 2021
Proportion of work : Full time
Remuneration : € 2,648.79 to € 4,323.97 depending on the candidate's experience
Desired level of education : PhD
Experience required : Indifferent


Europe is currently preparing the largest telescope of the world: the ELT [European Extremely Large Telescope] (https://elt.eso.org/). Planned by the end of 2026, this giant of 39 m diameter will allow answering fundamental questions of contemporary astrophysics by imaging exoplanets or studying large scales of the universe. However, images of astrophysical objects done by ground-based telescopes suffer from the distortion caused by the atmospheric turbulence which reduces the capacity of instruments to distinguish objects too close to each other. Adaptive Optics [AO] is a technique which allows restoring this loss of angular resolution by correcting the effects of atmospheric turbulence. In operation, on several astronomical observatories for almost 25 years, This technology is based on a deformable mirror which corrects in real time the incoming wave front by using information coming from a sensor which measures the turbulent phase called «Wave Front Sensor » [WFS]. WFS is the heart of any AO system. Ultimately it drives the final performance of the AO and thus of the associated astrophysical instrumentation. The researcher will be at the heart of the AO developments for the next generation of high contrast instrumentation both for the VLT (SPHERE+, MAVIS) and the ELT (HARMONI, PCS).


In this general frame work the objectives of the project for this job are threefold:
1. to develop new agile and multi-stage WFS schemes that will ensure both ultimate performance and good robustness to variable observing conditions in the frame of High Contrast Imaging applications;
2. to propose innovative on-sky identification and calibration processes to ensure the ultimate performance of the full AO loop on a very wide range of observational and environmental conditions;
3. to lead the final design and implementation in the laboratory and on-sky of these new concepts with existing and in-development facilities. In laboratory, it will consist in modifying the LOOPS bench @ LAM in order to include the new proposed WFS schemes. For the on-sky validations, two AO benches (currently under development) could be considered: the PAPYRUS bench on the 1m52 telescope of the Observatoire de Haute Provence (nearby Marseille) and the CANARDO bench on the William Herschel Telescope (4.2m) located in the Canary Islands.


- Instrumentation,
- Optics,
- Signal processing (mandatory),
- Python,
- Matlab.

Work Context

The researcher will work in the premise of the Laboratoire d'Astrophysique de Marseille within the R&D team (https://www.lam.fr/recherche-14/r-d-optics-group/?lang=en). He/She will benefit from all the expertise and the resources (simulation, benches, access to on-sky instrumentations) of the team. This project is part of the WOLF project: www.anr-wolf.com

Constraints and risks

Travel to OHP. Potentially night work during observation campaigns.

Additional Information

Applicants should submit a curriculum vitae and a single pdf file with :
• a list of publications;
• a one-page cover letter;
• the contact details of up to three reference persons (no need for the reference letters at this stage);
• a short research statement describing past achievements and future projects
For any information, you can contact : Benoit.neichel@lam.fr & Thierry.fusco@onera.fr

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