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.

 

Monday, 22 October

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

Convener: Chair: T. Fusco

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

Speaker: Dr Valentina Viotto (INAF - Padova)

Viotto_ParisWFS.pdf

10:00 PPPP on-sky experiment design

Speaker: Mrs Huizhe Yang (Durham University)

PARIS WORKSHOP - HUIZHE YANG.pptx

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

Speaker: Lisa Bardou

BARDOU_ WorkshopWFSing2018.pdf

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

Speaker: 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

Convener: Chair: V. Viotto

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

Speaker: Dr Thierry Fusco (ONERA / LAM)

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

Speaker: Mr Sebastiaan Haffert (Leiden Observatory)

Past, present and future of the Generalized.pptx

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

Speaker: 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

Convener: Chair: E. Gendron

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

Speakers: 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

Speaker: Mr Baptiste Sinquin (TU Delft)

2_PresentationParis.pdf

15:10 Predictive Tomographic Turbulence Estimation in Zonal Basis

Speaker: Mr Jesse Cranney (University of Newcastle)

JCranney.pptx

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

Speaker: Mr Léonard PRENGERE (IOGS)

PRENGEREpresWORKSHOP.pdf

15:50 → 16:10 Discussion

16:10 → 16:40 Coffee break

16:40 → 17:40 Wide Field Adaptive Optics

Convener: Chair: T. Morris

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

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

PortaluriWFSworkshop2018small.pdf

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

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

2_MAORY_sky_coverage_workshopWFS18.pptx

17:20 MAVIS AO, promises and challenges

Speaker: Dr Francois Rigaut (ANU)

20181021.MAVIS.key

17:40 → 18:00 Discussion

Tuesday, 23 October

09:30 → 10:50 In the Lab

Convener: Chair: M. Langlois

09:30 GTCAO calibration tools and laboratory results

Speaker: 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.

Speaker: 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

Speaker: 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

Speaker: 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

Convener: Chair: B. Neichel

12:00 A few words about AO control performance evaluation

Speaker: 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

Speaker: 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

Convener: Chair: R. Ragazzoni

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

Speaker: Mr Cedric, Taïssir Heritier (LAM/ONERA - INAF - ESO)

1_Heritier_WFSworkshop.pptx

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

Speaker: Vincent Deo (LESIA)

talk_vdeo_shouldWork_Maybe.pdf

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

Speakers: 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

Speaker: Ms 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

Convener: 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.

Speaker: Dr Tom Herbst (MPIA)

Herbst_LN_WFS_Paris_Oct18.key

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

Speaker: Dr Maud langlois (cnrs cral)

17:20 SOUL: upgrading the SCAO systems at LBT

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

SOUL-WFSELT_2018_v04.pptx

17:40 → 18:00 Discussion

19:30 → 23:00 Social dinner

Wednesday, 24 October

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

Convener: Chair: C. Kulcsar

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

Speaker: Dr Babak Sedghi (ESO)

ELTtiptiltcontrol_parisworkshop.pptx

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

Speaker: Mr 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

Speaker: Mr Alberto Rigamonti (EPFL / CERN)

Presentation Paris_2.pdf

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

Speaker: Ms 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

Convener: Chair: J.-M. Conan

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

Speaker: 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

Speaker: 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.

Speaker: 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

Convener: Chair: G. Rousset

14:30 Pupil plane wavefront sensing with 3D perturbators

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

Ragazzoni-WFSParis2018.pptx

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

Speaker: Dr Fernando Pedichini (INAF OAR)

2_Smart Modular Large WFS.pptx

15:10 → 15:50 High Contrast Adaptive Optics

Convener: Chair: G. Rousset

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

Speaker: Dr Garima Singh (LESIA)

1_VLTera_Oct2018.pptx

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

Speaker: Mr 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

Convener: Chair: I. Shatokhina

16:40 HOT news

Speaker: Dr Markus Kasper (ESO)

3_hotNews.pptx

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

Speaker: Mr Olivier Herscovici-Schiller (ONERA)

Herscovici-Schiller_COFFEEE_WFSC_2018-10-24.pptx

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

Speaker: Mr Axel Potier (LESIA)

5_WSv3Potier.pdf

17:40 → 18:00 Discussion