LIRA
Laboratory for Instrumentation and Research in Astrophysics

LIRA, a pioneer in astrophysics and instrumentation, pushes back the frontiers of knowledge

LENS: LIRA – Weekly Highlight

VeSUV undergoing testing on OBAMA at LIRA

13 July 2026

Scheduled for launch in 2031, the European Space Agency’s (ESA) EnVision mission will study Venus to understand its geological and climatic evolution. France is contributing to several of the mission’s instruments, including VenSpec-U (VeSUV), an ultraviolet spectrometer developed by a consortium comprising LATMOS, IRAP and LIRA.

At LIRA, the GEFL, ELVET and MESPAL departments are involved in the instrument’s development, working respectively on its thermal architecture, test software and instrument database, as well as its environmental testing.

The image shows the assembly of the VeSUV detector mounted on the temperature-controlled bracket of the OBAMA vacuum chamber, where the environmental tests are carried out. These tests validate the thermal control system under conditions similar to those encountered in flight, an essential step prior to its integration into the EnVision mission.

Credits: Napoléon Nguyen Tuong
SEMINAR Thursday 16 July 2026 11:00
Séminaires HRAA
Aditya Sengupta (University of California, Santa Cruz) : Diffraction-limited exoplanet imaging at today’s observatories with photonic lanterns
SEMINAR Monday 20 July 2026 11:00
Séminaires LIRA/LUX
Iouli Gordon, Harvard-Smithsonian Center for Astrophysics : The HITRAN2024 molecular spectroscopic database: from protoplanetary disks to exoplanets

Presentation

LIRA, a CNRS joint research unit at Paris Observatory, is a laboratory of excellence in astrophysics and instrumentation. It studies astrophysical objects, from the Solar System to our Galaxy and beyond, through five thematic areas. Through international collaboration and instrumental innovation, it pushes back the frontiers of science and contributes to the training and dissemination of knowledge.

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Our projects

MIRS on the JAXA MMX mission

The Martian Moons eXploration (MMX) mission of JAXA (Japan Aerospace Exploration Agency) is the first sample-return mission from the Phobos satellite. It also includes an exploration of the Martian system. The mission’s primary objective is to decipher the origin of Martian moons, which will provide important information on planet formation and the conditions for the emergence of water on Earth-like planets.

The MIRS (MMX InfraRed Spectrometer) instrument, developed under the leadership of LESIA (now LIRA), is an imaging spectrometer that will characterize the composition of the Martian system and help select candidate sites for sample collection.

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GRAVITY+

The GRAVITY instrument, installed on the European Southern Observatory’s Very Large Telescope Interferometer (VLTI/ESO), has produced spectacular and transformative results on the supermassive black hole at the centre of the Milky Way, the active nuclei of other galaxies, proto-planetary disks around young stars and exoplanets. GRAVITY+ aims to modernise both VLTI and GRAVITY to make them ≈ 100 times more sensitive, while increasing sky coverage by a factor of ≈ 100, and contrast in the vicinity of bright objects by a factor of ≈ 10. These gains will benefit all the VLTI’s current and future instruments for the next 20 years, and will perpetuate it as a unique infrastructure in the world.

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Contacts

Contacts

Postal address
Observatoire de Paris
5, place Jules Janssen
92195 Meudon

Phone
01 45 07 77 01

Mail
contact.lira@obspm.fr

Meudon site

LIRA
Observatoire de Paris
5, place Jules Janssen
92195 MEUDON Cedex

How to get to Meudon

Paris site

LIRA
Observatoire de Paris
77, Avenue Denfert-Rochereau
75014 Paris

How to get to Paris

Cergy site

LIRA - Site de Neuville II
UFR Sciences et Techniques - Département de physique
5, mail Gay Lussac
95000 Neuville-sur-Oise

How to get to Cergy