Illuminating yellow and red feathers in museum exhibits: Microfading tests and light sensitivity of their bio-pigments

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Type de document : Archive ouverte | COM-CC 19th Triennial Conference : Transcending Boundaries: Integrated Approaches to Conservation

Edité par HAL CCSD

Type de document: info:eu-repo/semantics/conferenceObject ; Conference papers
Langue: en

Résumé: International audience. Microfading tests were introduced into the field of conservation to help collection managers and conservators adapt their lighting policies to light-sensitive artifacts. This technique consists in intensively illuminating a small surface (diameter of 1 mm 2) while simultaneously monitoring the color change (Delta E) in a colorimetric space. After having developed a level of expertise in diagnosing and predicting photodegradation on graphic and photographic collections to support exhibit decisions, the musée du quai Branly–Jacques Chirac (mqB–JC) considered moving on to feathers, of which there are a large number in its ethnographic collection. This study focused on the brightest fathers—yellow and red feathers from the Ara species, colored by psittacofulvin pigments. Two main results are reported. First, the study determined how to perform microfading tests on curved, translucent, textured, and fragile objects made of feathers. Second, it showed that yellow feathers are less sensitive to light than red ones.

Citer la référence: Tournié, Aurélie , Sauvagnargues, Fabrice , Daher, Céline , Andraud, Christine , Cuisin, Jacques , Illes, Véronique , Kissel, Éléonore, Illuminating yellow and red feathers in museum exhibits: Microfading tests and light sensitivity of their bio-pigments, HAL CCSD,

Sujets: lightfastness ; microfading test ; yellow and red feathers ; psittacofulvins ; preventive conservation ; [CHIM.ANAL]Chemical Sciences/Analytical chemistry ; [SHS.ART]Humanities and Social Sciences/Art and art history

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