scientific rationale

*** NEW (July 1st 2021) ***

The school content (courses slides, practice sessions, links to the videos) is available on

The recorded courses are available at



VLTI schools of interferometry have been organized roughly every two years since the opening of the ESO Very Large Telescope Interferometer in 2002. They have helped to train hundreds of astrophysicists in using interferometry and the instruments at VLTI and other facilities for their research.

The aim of these VLTI schools is to offer Ph.D. students, post-doctoral and permanent researchers an introduction to the technique of long-baseline optical/infrared interferometry, an overview of the current generation of instruments, and lectures and practice sessions in data reduction, modeling, and image reconstruction. Seminars and reviews on astrophysical results in various fields ranging from stellar physics to planetology and extra-galactic science are also given. While remaining as comprehensive as possible, each school also focused on a subject such as a new instrument, a problematic in interferometry, or a field of astrophysics.

The 10th VLTI school will focus on the latest VLTI instrument: MATISSE, the new four-beam combiner operating in the mid-infrared, from 2.8 to 13 microns, build by an international consortium led by the Observatoire de la Côte d'Azur and open to the community since April 2019. It will also set emphasis on one of MATISSE driving astrophysical programs: planetology.


The school was supposed to take place in 2020 but was delayed by almost a year due to the covid-19 crisis...

...However, as we are far from the end of the crisis in France as of Spring 2021, we finally decided to switch the school to 100% online lectures and tutorials. To take into account this new organization and to allow students from most countries to attend the school at decent hours, we decided to extend its duration to 2 weeks. The news schedule will soon be published on the website.


New dates are :

June 7-18, 2021

...somewhere on the Web!












For any information, please contact the LOC at



  • 2020-02-01 : The conference website is up and running!
  • 2020-03-02 : Registration is open!
  • 2020-05-13 : School is postponed to late 2020 or 2021
  • 2020-10-16 : School resheduled to June 6-12, 2021
  • 2021-03-05 : Registration fee payment delayed due to covid crisis
  • 2021-04-04 : School switched to 100% ONLINE
  • 2021-04-04 : Registration fee canceled
  • 2021-04-04 : School extended to two weeks : New dates : June 7-18, 2021
  • 2021-04-09 : Registration extended until April 16
  • 2021-04-16 : Registration for the school is Closed
  • 2021-04-16 : Registration for lectures only will open soon
  • 2021-04-16 : Send us an email to get access to the lectures
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