Actualités stages Photo CARAA ©

Sponsorship & internships at CARAA

15 June 2021

Each year, CARAA engages through skills sponsorship and internships with students in conservation-restoration and chemistry.


This year, Clémence Coatmellec (École de Condé) is benefiting from access to various measuring instruments (Raman & SFX) for the study of ” The stability of various Chinese inks “.

Irene Bilbao (Master I in chemistry) is also co-supervised by the CARAA and the IMMM of Le Mans in ” Study of red organic dyes by Raman and SERS ” mainly from textile fibers.

Results to follow during their defense !! 👏🏻👏🏻


Painted backgrounds at the Vasarely foundation

12 November 2020

Painted background study at the Vasarely foundation


CARAA is delighted to participate in collaboration with ARCOART (Magalie Troy) and Laura Briganti in the study of painted backgrounds at the Vasarely foundation.

These backgrounds supervised by Vasarely himself are classified as “historical monuments” since 2013. They present different conservation issues including, uplifting layers, peeling and infiltration.

The analyses carried out in this first campaign hope to provide some information to conservators for the restoration of these backgrounds.

Thanks to ARCOART and to the entire team of the collections and exhibitions department of the Vasarely Foundation for this fascinating collaboration.

The examinations were carried out in cross section under visible and UV light and the analyses were made by mean of Raman microscopy, SEM-EDS et micro-FTIR .

A next study will take place in early 021 on artworks from the foundation exhibiting surface deposit phenomena.

To be continued …


Cathedrale le Mans Photo CARAA ©

The Chapel of the Musical Angels at Le MANS

Studies prior to the restoration in the Chapel of the Musical Angels at Le MANS


This preliminary study carried out in collaboration with ARTHEMA restoration was carried out in the Chapel of the Virgin -XIVth century – (or Chapel of the Musical Angels) of the Saint Julien Cathedral of Le Mans.

It aims to characterize:

  • The constituent materials of the original wall paintings and of the successive restorations.
  • The identification of architectural materials, mortars, plasters, efflorescence and exudation salts formed on the surface.
  • As well as a multispectral imaging of the mural paintings .

The examinations were carried out in cross-section under visible and UV light and the analyzes were made by mean of Raman microscopy, SEM-EDS , X ray diffraction and micro-FTIR.


-> The Chapel of the Virgin in the Press (French).
-> Visiting the Chapel of the Virgin -le Mans- (French).

Photo CARAA ©

The Treasure Behind the Wall …

26 November 2019

In Paris, the incredible story of a work of art found by chance

In the vast showroom of the future Oscar de la Renta shop in Paris (4, rue de Marignan, 8th), workers and architects discovered in 2019 a 17th century painting.

After technical study and restoration, it reveals today all its splendor. It is the story of the ambassador of Louis XIV in Constantinople (the Marquis de Nointel) during his visit of Jerusalem … (read the details in the press: The New York Times, The Times, Artnet, …

CARAA was very pleased to have been associated with this exciting study with the Nouvelle Tendance workshop. Here is an overview of the few scientific analyzes conducted on this painting prior to the restorations.


Multispectral Photo CARAA ©

Multispectral Camera

10 December 2018

CARAA has recently acquired a new XpeCAM X01 multispectral camera.

This camera equipped with 30 filters covers the region from 360 to 1200 nm and allows to observe “beyond the visible” in the ultraviolet and infra-red regions and to detect restorations, repentances or preparatory drawings.

But, it also allows to extract the reflectance spectra of each pixel collected and compare it on the totality of the work (mapping). This feature is particularly useful for tracing the presence of a particular pigment in the different regions of an Artwork.

To date, the multispectral examinations carried out with this device have been carried out on various old and modern paintings (Renoir, Manet, Dali, Modigliani, Suetin, Arp, ..) as well as on classified works (e.g. Painted parchments by Dom Michel De Nobletz) and on painted ceramics.

Do you have a question, please contact us?