High CONtrast Imaging & Spectroscopy

one-day workshop

march 9th 2012, ESO Chile (Vitacura)

HConIS, first edition

A one-day workshop focused on High CONtrast Imaging & Spectroscopy took place on friday, March 9th 2012.  Conveniently following the science-focused Observing Planetary Systems II, it complemented the OPS-II Session 4 dedicated to new facilities such as SPHERE, GPI, HiCIAO, etc. People interested in high contrast concepts, techniques/results and data processing methods were invited to sign up for it spend an extra day in Santiago. We expected participation from the OPS-II attendants but others were welcome in particular students, postdocs and engineers working in Chile. This mini workshop aimed at filling up the gap in 2012  -waiting from the next In the Spirit of Lyot conference (2007, 2010, 2013?)- to bring "techno" and/or "science" oriented people together in the constantly evolving field of high-contrast, direct imaging & spectroscopy. 
Interested persons should register or contact Julien Girard (me) or Dimitri Mawet and expect the detailed program to be published here. Since it will take also take place at ESO/Vitacura, the maximum capacity will be ~100 persons but we are limited to ~15 oral presentations.



High contrast imaging/spectroscopy is on the verge of a technical and scientific revolution, thanks to the coming of extreme-adaptive optics facilities at major observatories (SPHERE at the VLT, GPI at Gemini, P3K at Palomar, HiCIAO at Subaru). ExAO will provide excellent image quality (SR~90%) to 8-m class telescope, which will allow the use of new-generation coronagraphic systems. The baseline coronagraphs for these systems are representative of the four big families of coronagraphs: image-plane masks acting on either amplitude or phase, and pupil-plane devices acting also on either amplitude or phase, or a clever mix of all the above. At the same time, observing strategies, and associated internal calibration and data reduction techniques, have dramatically improved to allow for a better subtraction of the residual systematics affecting high contrast images (speckles), and mostly due to the presence of slowly-varying optical aberrations within the instruments (static aberrations).

Programme & participants with VIDEOS!!!

HCOnIS 2012  featured 15 20-to-30 min video recorded talks (see below) and many nice - but not recorded - discussions.
No limitations in Posters, most posters from OPS-II can stay put and HConIS poster can be installed on friday morning.
There were approximately 70 participants.
Lunch, coffee and cheese breaks were kindly offered by the ESO Chile Office for Science.

08:45 - 09:00
Coffee and Poster installation

09:00 - 09:05
Opening & programme presentation Julien Girard,Chair
(ESO, Chile)

09:05 - 09:30 Beta Pictoris b spectral properties Mickaël Bonnefoy
09:30 - 09:50
Searching for low mass companions with VLTI-PIONIER: the high precision closure-phase technique Jean-Philippe Berger
(ESO Chile / IPAG, FR)
09:50 - 10:10
Innovative LOCI-based background subtraction technique: example of the HR 8799 planet imaging at M-band Raphael Galicher
(HI NRC-CNC/U. Montréal, CA)
10:10 - 10:40
The status and schedule of SPHERE David Mouillet
10:40 - 11:10
GPI design principles & A&T news Markus Hartung
(Gemini South, Chile)

11:10 - 11:40

Coffee and Poster Session

11:40 - 12:10
State of the art and perspectives in Coronagraphy Dimitri Mawet,Co-Chair (ESO, Chile / JPL, USA) PDF, VIDEO

12:10 - 12:30

Diophantian optics and high contrast
Daniel Rouan (Obs. Paris Meudon, FR) PDF, VIDEO

12:30 - 12:50

High-contrast Long Slit Spectroscopy for Exoplanets Characterization

Arthur Vigan (Exeter, UK)

12:50 - 13:10

Apodizing Phase Plate (APP) enhanced spectroscopy
Julien Girard, Chair (ESO, Chile) PDF, VIDEO

13:10 - 14:20

Lunch in the park, coffee and Poster Session

14:20 - 14:40

Concept and performance of a small coronagraph in space: the SPICES mission

Anthony Boccaletti (Obs. Paris Meudon, FR)

14:40 - 15:00
Finding the Non Common Path Aberrations with Focal Plane Wavefront Sensing Matthew Kenworthy (Obs. Leiden, NL) PDF, VIDEO
15:00 - 15:30
A focal plane wavefront sensor for planet detection: Laboratory performance of a self-coherent camera Raphael Galicher / Pierre Baudoz
(HI NRC-CNC/U. Montréal, CA) / Obs. Paris Meudon (FR)
15:30 - 16:00
Extinction controlled Adaptive Mask Coronagraph:Lyot and Phase Mask dual concept for wide extinction area Pierre Bourget (ESO, Chile) PDF, VIDEO
16:00 - 16:30
Coffee and Poster Session

16:30 - 17:00
Beyond aperture masking: interferometry with large mirrors
Peter Tuthill (U. Sydney, AU)
16:30 - 17:00
Dense Aperture Mapping (DAM) for high contrast imaging Fabien Patru(ESO, Chile) PDF, VIDEO
17:00 - 18:00
Discussion and Closing of WS

please tell us on sunday or monday (OPS-II registration) if you would like a vegetarian meal.
Note: the talks should be video recorded and will be posted online shortly after the meeting.


Deadlines and contributions


- Julien Girard (Chair): jgirard [at] eso [dot] org
- Dimitri Mawet(co-Chair): dmawet [at] eso [dot] org
+ support from the OPS-II SOC/LOC

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