Wavefront sensing and control in the VLT/ELT era, 3rd edition

22 oct. 2018, 08:45 → 24 oct. 2018, 19:30 Europe/Paris

Amphithéâtre Turing (Paris)

Caroline Kulcsar (Institut d'Optique Graduate School), Gerard Rousset

 

Wavefront sensing (WFS) and control are at the heart of Adaptive Optics (AO) and often dictate the performance. Various challenges are raised by the astrophysics programs like the characterization of exoplanets, the study of the stellar populations or the observation of the very first galaxies, for instance. For such programs, the requirements are to sense and control the wave-front in wide field of view, to combine natural and laser guide stars, to hunt for high sensitivity or high dynamics.

After the two first editions of the workshop on Wavefront sensing in the VLT/ELT era held in Marseille in October 2016 and in Padova in October 2017, we organized the third edition in collaboration between Observatoire de Paris and Institut d'Optique Graduate School, and with a broaden scope to include AO control topics. It was held in Paris from the 22nd to the 24th of October 2018.

The different sessions of the workshop were:

• Laser guide star wavefront sensing

• Pyramid wave-front sensor

• Wave-front sensing techniques

• Non common path aberrations

• Phase reconstruction and predictive control

• Wave-front error and performance evaluation

• Tip-tilt and vibration control

• Wide field adaptive optics

• High contrast imaging adaptive optics

• In the laboratory

• Instruments for today and tomorrow

The workshop was a great success with 82 registered participants. 41 talks, including 2 invited ones from V. Viotto and B. Sedghi, have been given covering the aforementioned sessions.

 

lun. 22 octobre

08:45 → 09:15 Registration desk opening

09:15 → 09:30 Welcome and introduction to the workshop (C. Kulcsar & G. Rousset)

09:30 → 11:00 Laser Guide Star

Président de session: Chair: T. Fusco

09:30 INGOT WFS for LGS: on-going feasibility study

Orateur: Dr Valentina Viotto (INAF - Padova)

Viotto_ParisWFS.pdf

10:00 PPPP on-sky experiment design

Orateur: Mme Huizhe Yang (Durham University)

PARIS WORKSHOP - HUIZHE YANG.pptx

10:20 On-sky ELT-elongated LGS wavefront-sensing using CANARY

Orateur: Lisa Bardou

BARDOU_ WorkshopWFSing2018.pdf

10:40 The MAORY Laser Guide Star Wavefront Sensor Design Status

Orateur: Dr Laura Schreiber (INAF - OAS)

Schreiber_WFS_2018.pptx

11:00 → 11:20 Discussion

11:20 → 11:50 Coffee break

11:50 → 12:50 Wave-Front Sensing Techniques

Président de session: Chair: V. Viotto

11:50 The WOLF ANR : Wave-front sensors for adaptive Optics on Extremely Large telescope using Fourier filtering

Orateur: Dr Thierry Fusco (ONERA / LAM)

12:10 Past, present and future of the generalized Optical Differentiation Wavefront sensor

Orateur: M. Sebastiaan Haffert (Leiden Observatory)

Past, present and future of the Generalized.pptx

12:30 MAVIS: How to "LIFT" the sky coverage ?

Orateur: Dr Yoann Brûlé (Laboratoire d'Astrophysique de Marseille)

2018-10-22-WorkShopParis_YB.pptx

12:50 → 13:10 Discussion

13:10 → 14:30 Lunch break

14:30 → 15:50 Phase reconstruction and predictive control

Président de session: Chair: E. Gendron

14:30 Update on pyramid topics: spiders, LWE, NCPAs, M4, sensitivtiy, K vs R band, ...

Orateurs: Dr Andreas Obereder (RICAM, Austrian Academy of Science), Dr Iuliia Shatokhina (RICAM, Austrian Academy of Science)

1_Talk_WFS_Paris_AOIS.pdf

14:50 Tensor-based predictive control for large-scale AO

Orateur: M. Baptiste Sinquin (TU Delft)

2_PresentationParis.pdf

15:10 Predictive Tomographic Turbulence Estimation in Zonal Basis

Orateur: M. Jesse Cranney (University of Newcastle)

JCranney.pptx

15:30 Phase prediction under Taylor hypothesis using zonal models in LQG AO control

Orateur: M. Léonard PRENGERE (IOGS)

PRENGEREpresWORKSHOP.pdf

15:50 → 16:10 Discussion

16:10 → 16:40 Coffee break

16:40 → 17:40 Wide Field Adaptive Optics

Président de session: Chair: T. Morris

16:40 Deep observations with an ELT in the Global Multi Conjugated Adaptive Optics perspective

Orateur: Dr Elisa Portaluri (INAF - Osservatorio Astronomico di Padova)

PortaluriWFSworkshop2018small.pdf

17:00 MAORY LO sensors control strategy and sky coverage assessment

Orateur: Dr Cedric Plantet (INAF - Osservatorio Astronomico di Arcetri)

2_MAORY_sky_coverage_workshopWFS18.pptx

17:20 MAVIS AO, promises and challenges

Orateur: Dr Francois Rigaut (ANU)

20181021.MAVIS.key

17:40 → 18:00 Discussion

mar. 23 octobre

09:30 → 10:50 In the Lab

Président de session: Chair: M. Langlois

09:30 GTCAO calibration tools and laboratory results

Orateur: Dr Iciar Montilla (IAC)

GTCAO_calibration_Paris_2018.pptx

09:50 Development of the adaptive optics testbed LOOPS for Fourier-based wavefront sensors demonstration and analysis.

Orateur: Dr Pierre Janin-Potiron (ONERA)

LOOPS_JaninPotiron.key.zip

10:10 A Shack-Hartmann based setup to study deformable mirrors dynamics at very high framerates

Orateur: Dr Prashant Pathak (ESO)

Pathak_Paris_WFS_2018.pdf

10:30 The ELT Emulator - MELT - an Optomechanical Test Bench for Wavefront Control, Phasing, and Telescope Control

Orateur: Dr Thomas Pfrommer (European Southern Observatory)

4_Pfrommer_MELT_23Oct2018.pdf

10:50 → 11:10 Discussion

11:10 → 12:00 Coffee break & Industrial partner demonstrations

12:00 → 12:40 Wave-Front Error & Performance Evaluation

Président de session: Chair: B. Neichel

12:00 A few words about AO control performance evaluation

Orateur: Prof. Caroline Kulcsar (Laboratoire Charles Fabry - CNRS - Institut d'Optique Graduate School)

prez_WFSC_workshop_perf_eval.pdf

12:20 Numerical estimation and modeling of the wavefront error breakdown in adaptive optics

Orateur: Dr Florian Ferreira (LESIA)

WFSC3.pptx

12:40 → 13:00 Discussion

13:00 → 14:30 Lunch break

14:30 → 15:50 Pyramid Wave-Front Sensor

Président de session: Chair: R. Ragazzoni

14:30 Pseudo-Synthetic Interaction Matrix with Pyramid WFS: focusing on the mis-registrations identification.

Orateur: M. Cedric, Taïssir Heritier (LAM/ONERA - INAF - ESO)

1_Heritier_WFSworkshop.pptx

14:50 A modal approach to optical gain compensation for the PWFS

Orateur: Vincent Deo (LESIA)

talk_vdeo_shouldWork_Maybe.pdf

15:10 (Semi-)analytical and non-linear approaches towards optical gain compensation for pyramid sensors

Orateurs: Iuliia Shatokhina (RICAM Linz), Victoria Hutterer (Johannes Kepler University)

3_WFS_workshop_Paris_VH.pdf

15:30 Design of the MagAO-X Pyramid Wavefront Sensor

Orateur: Mlle Lauren Schatz (University of Arizona)

schatzWFSWorkshopV2.pptx

15:50 → 16:10 Discussion

16:10 → 16:40 Coffee break

16:40 → 17:40 Instruments for Today & Tomorrow

Président de session: Chair: L. Schreiber

16:40 Commissioning Multi-Conjugate Adaptive Optics with LINC-NIRVANA on LBT

We report on early commissioning of LINC-NIRVANA (LN), an innovative Multi-Conjugate Adaptive Optics (MCAO) system for the Large Binocular Telescope (LBT). LN uses two, parallel Multi-Conjugate Adaptive Optics (MCAO) systems, each of which corrects turbulence at two atmospheric layers, to deliver near diffraction-limited imagery over a two-arcminute field of view. We discuss our strategies for wavefront sensor calibration, target acquisition, and science observing. This is followed by a detailed update on MCAO commissioning, with a focus on on-sky performance since First Light. We conclude with an outlook to early science exploitation and lessons learned from bringing such a complex adaptive optics instrument into operation.

Orateur: Dr Tom Herbst (MPIA)

Herbst_LN_WFS_Paris_Oct18.key

17:00 Visible adaptive optics challenges for the new THEMIS solar facility

Orateur: Dr Maud langlois (cnrs cral)

17:20 SOUL: upgrading the SCAO systems at LBT

Orateur: Dr Cedric Plantet (INAF - Osservatorio Astronomico di Arcetri)

SOUL-WFSELT_2018_v04.pptx

17:40 → 18:00 Discussion

19:30 → 23:00 Social dinner

mer. 24 octobre

09:30 → 11:00 Tip-Tilt & Vibration Control

Président de session: Chair: C. Kulcsar

09:30 Tip/tilt control strategies of E-ELT

Orateur: Dr Babak Sedghi (ESO)

ELTtiptiltcontrol_parisworkshop.pptx

10:00 Vibration Mitigation in Adaptive Optics of Large Telescopes Using Model Predictive Control

Orateur: M. Martin Glück (University of Stuttgart, Institute for System Dynamics)

20181024_VibrationMitigationMPC_GlueckMartin.pdf

10:20 Supression of spurious vibrations by online loop shaping and H-infinity control in Adaptive Optics

Orateur: M. Alberto Rigamonti (EPFL / CERN)

Presentation Paris_2.pdf

10:40 Analytical and numerical simulations of a two-stage controlled AO system

Orateur: Mlle Nelly Cerpa (European Southern Observatory- Institut d´Optique)

WFS_and_Control Cascaded System N_CERPA_B.pptx

11:00 → 11:20 Discussion

11:20 → 11:50 Coffee break

11:50 → 12:50 Non Common Path Aberrations

Président de session: Chair: J.-M. Conan

11:50 Wavefront sensing for NCPA mitigation in high contrast imaging: SHARK-VIS simulations

Orateur: Dr Fernando Pedichini (INAF OAR)

1_NCPA_WFSWorkshop_Paris(2).pptx

12:10 Correction of NCPAs using a deformable lens in pyramid wavefront sensor-based AO systems: preliminary lab results

Orateur: Dr Maria Bergomi (INAF-Padova)

Bergomi_WFS_2018_24_10_2018.pdf

12:30 Phase diversity as a tool to sense non-common path aberrations in SHARK-NIR: strategies and simulated performance.

Orateur: Dr Daniele Vassallo (INAF-Osservatorio Astronomico di Padova)

3bis_Vassallo-WFS2018.pdf

12:50 → 13:10 Discussion

13:10 → 14:30 Lunch break

14:30 → 15:10 Wave-Front Sensing Techniques

Président de session: Chair: G. Rousset

14:30 Pupil plane wavefront sensing with 3D perturbators

Orateur: Prof. Roberto Ragazzoni (INAF - Astronomical Observatory of Padova)

Ragazzoni-WFSParis2018.pptx

14:50 May Mice help scientists to develop a Smart Wave Front Sensor?

Orateur: Dr Fernando Pedichini (INAF OAR)

2_Smart Modular Large WFS.pptx

15:10 → 15:50 High Contrast Adaptive Optics

Président de session: Chair: G. Rousset

15:10 Precision emulation of high-contrast images using the low-order wave front sensor telemetry

Orateur: Dr Garima Singh (LESIA)

1_VLTera_Oct2018.pptx

15:30 Experimental demonstration of a pupil-modulated PDI with broadband light.

Orateur: M. Nicolas Dubost (Durham University)

2_dubost.pdf

15:50 → 16:10 Discussion

16:10 → 16:40 Coffee break

16:40 → 17:40 High Contrast Adaptive Optics

Président de session: Chair: I. Shatokhina

16:40 HOT news

Orateur: Dr Markus Kasper (ESO)

3_hotNews.pptx

17:00 Hot COFFEE news: a status of the coronagraphic phase diversity.

Orateur: M. Olivier Herscovici-Schiller (ONERA)

Herscovici-Schiller_COFFEEE_WFSC_2018-10-24.pptx

17:20 First Electric Field Conjugation wavefront control on the THD2 bench

Orateur: M. Axel Potier (LESIA)

5_WSv3Potier.pdf

17:40 → 18:00 Discussion