• JMMC Aspro2 25.12.1 ready for ESO Period 118

    JMMC Aspro2 25.12.1 ready for ESO Period 118

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  • Award in the optical interferometry community

    Award in the optical interferometry community

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  • Warning: since June 19, 2026 some instabilities on the Releases, OiDB, CatalogAPI, SearchFTT :(

    Warning: since June 19, 2026 some instabilities on the Releases, OiDB, CatalogAPI, SearchFTT :(

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  • 2026 VLTI Community Days, ESO / D-Garching, on May 11-13

    2026 VLTI Community Days, ESO / D-Garching, on May 11-13

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  • 2026 CHARA/MROI Science Meeting and New Visions in Optical Interferometry Workshop, New Mexico Tech in Socorro, NM on March 16-20

    2026 CHARA/MROI Science Meeting and New Visions in Optical Interferometry Workshop, New Mexico Tech in Socorro, NM on March 16-20

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The Mission

The JMMC is the french center for optical interferometry. It aims at providing support for the users of the stellar interferometers currently in operation. This support is possible thanks to the development of efficient and using friendly tools for preparing the observations, analysing the data or archiving the results. The tools are accessible through the web site and linked to a "Face to Face" help, especially for the preparation of observations, the PIONIER, GRAVITY and MATISSE data reduction, and the data analysis.

Acknowledgements: some recommendations
If a JMMC software, catalogue or database has been helpful in your research, please mention it in your publication in the ’Acknowledgements’ Section, add the reference article if it exists in the ’Bibliography’ Section and indicate, e.g. in a footnote, the link you used. Such recognition is important if JMMC is to continue its mission.
Standard phrases, updated links and reference articles are given here.

Who are we?