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.

 

lundi 22 octobre

08:45 Registration desk opening

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

Laser Guide Star

Président de session: Chair: T. Fusco

1 INGOT WFS for LGS: on-going feasibility study

Orateur: Dr Valentina Viotto (INAF - Padova)

Viotto_ParisWFS.pdf

2 PPPP on-sky experiment design

Orateur: Mme Huizhe Yang (Durham University)

PARIS WORKSHOP - HUIZHE YANG.pptx

3 On-sky ELT-elongated LGS wavefront-sensing using CANARY

Orateur: Lisa Bardou

BARDOU_ WorkshopWFSing2018.pdf

4 The MAORY Laser Guide Star Wavefront Sensor Design Status

Orateur: Dr Laura Schreiber (INAF - OAS)

Schreiber_WFS_2018.pptx

11:00 Discussion

11:20 Coffee break

Wave-Front Sensing Techniques

Président de session: Chair: V. Viotto

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

Orateur: Dr Thierry Fusco (ONERA / LAM)

6 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

7 MAVIS: How to "LIFT" the sky coverage ?

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

2018-10-22-WorkShopParis_YB.pptx

12:50 Discussion

13:10 Lunch break

Phase reconstruction and predictive control

Président de session: Chair: E. Gendron

8 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

9 Tensor-based predictive control for large-scale AO

Orateur: M. Baptiste Sinquin (TU Delft)

2_PresentationParis.pdf

10 Predictive Tomographic Turbulence Estimation in Zonal Basis

Orateur: M. Jesse Cranney (University of Newcastle)

JCranney.pptx

11 Phase prediction under Taylor hypothesis using zonal models in LQG AO control

Orateur: M. Léonard PRENGERE (IOGS)

PRENGEREpresWORKSHOP.pdf

15:50 Discussion

16:10 Coffee break

Wide Field Adaptive Optics

Président de session: Chair: T. Morris

12 Deep observations with an ELT in the Global Multi Conjugated Adaptive Optics perspective

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

PortaluriWFSworkshop2018small.pdf

13 MAORY LO sensors control strategy and sky coverage assessment

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

2_MAORY_sky_coverage_workshopWFS18.pptx

14 MAVIS AO, promises and challenges

Orateur: Dr Francois Rigaut (ANU)

20181021.MAVIS.key

17:40 Discussion

mardi 23 octobre

In the Lab

Président de session: Chair: M. Langlois

15 GTCAO calibration tools and laboratory results

Orateur: Dr Iciar Montilla (IAC)

GTCAO_calibration_Paris_2018.pptx

16 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

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

Orateur: Dr Prashant Pathak (ESO)

Pathak_Paris_WFS_2018.pdf

18 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 Discussion

11:10 Coffee break & Industrial partner demonstrations

Wave-Front Error & Performance Evaluation

Président de session: Chair: B. Neichel

19 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

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

Orateur: Dr Florian Ferreira (LESIA)

WFSC3.pptx

12:40 Discussion

13:00 Lunch break

Pyramid Wave-Front Sensor

Président de session: Chair: R. Ragazzoni

21 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

22 A modal approach to optical gain compensation for the PWFS

Orateur: Vincent Deo (LESIA)

talk_vdeo_shouldWork_Maybe.pdf

23 (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

24 Design of the MagAO-X Pyramid Wavefront Sensor

Orateur: Mlle Lauren Schatz (University of Arizona)

schatzWFSWorkshopV2.pptx

15:50 Discussion

16:10 Coffee break

Instruments for Today & Tomorrow

Président de session: Chair: L. Schreiber

25 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

26 Visible adaptive optics challenges for the new THEMIS solar facility

Orateur: Dr Maud langlois (cnrs cral)

27 SOUL: upgrading the SCAO systems at LBT

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

SOUL-WFSELT_2018_v04.pptx

17:40 Discussion

19:30 Social dinner

mercredi 24 octobre

Tip-Tilt & Vibration Control

Président de session: Chair: C. Kulcsar

28 Tip/tilt control strategies of E-ELT

Orateur: Dr Babak Sedghi (ESO)

ELTtiptiltcontrol_parisworkshop.pptx

29 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

30 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

31 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 Discussion

11:20 Coffee break

Non Common Path Aberrations

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

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

Orateur: Dr Fernando Pedichini (INAF OAR)

1_NCPA_WFSWorkshop_Paris(2).pptx

33 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

34 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 Discussion

13:10 Lunch break

Wave-Front Sensing Techniques

Président de session: Chair: G. Rousset

35 Pupil plane wavefront sensing with 3D perturbators

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

Ragazzoni-WFSParis2018.pptx

36 May Mice help scientists to develop a Smart Wave Front Sensor?

Orateur: Dr Fernando Pedichini (INAF OAR)

2_Smart Modular Large WFS.pptx

High Contrast Adaptive Optics

Président de session: Chair: G. Rousset

37 Precision emulation of high-contrast images using the low-order wave front sensor telemetry

Orateur: Dr Garima Singh (LESIA)

1_VLTera_Oct2018.pptx

38 Experimental demonstration of a pupil-modulated PDI with broadband light.

Orateur: M. Nicolas Dubost (Durham University)

2_dubost.pdf

15:50 Discussion

16:10 Coffee break

High Contrast Adaptive Optics

Président de session: Chair: I. Shatokhina

39 HOT news

Orateur: Dr Markus Kasper (ESO)

3_hotNews.pptx

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

Orateur: M. Olivier Herscovici-Schiller (ONERA)

Herscovici-Schiller_COFFEEE_WFSC_2018-10-24.pptx

41 First Electric Field Conjugation wavefront control on the THD2 bench

Orateur: M. Axel Potier (LESIA)

5_WSv3Potier.pdf

17:40 Discussion