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Defining the first preventive conservation guidelines for hand-painted magic lantern glass slides
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Orientador(es)
Resumo(s)
This article intends to define and make available guidelines for the preventive conservation of hand-painted glass slides for magic lanterns, the first optical instruments for the projection of images, invented in the 17th century. For this purpose, around 300 hand-painted glass slides from the Portuguese Cinematheque - Museum of Cinema (CP) and Nacional Museum of Natural History and Science of the University of Lisbon (MUHNAC), were studied in terms of representativity in these collections, discursive genre, type of construction or movement mechanism, state of preservation and degradation problems. A survey was designed and distributed to institutions across the globe aiming for an overview of the formal characteristics of the collections of magic lantern slides and the preventive and interventive conservation measures undertaken. The guidelines are focused on the environmental conditions (temperature, relative humidity, and light), fine particles and pest control, storage and display conditions and materials, as well as handling. Recommendations on performative projections or demonstrations are also provided.
Descrição
The authors acknowledge the support of the Portuguese Foundation for Science and Technology (FCT-MCTES), through the doctoral program CORES-PD/00253/2012, for the PhD grant PD/BD/136694/2018 (Ângela Santos), and Research Unit VICARTE (UIDB/00729/2020). This research has benefited from the use of the infrastructure PRISC (Portuguese Research Infrastructure of Scientific Collections). The authors are also grateful to all the institutions and individuals that accepted to participate in the online survey, and to the Portuguese Cinematheque – Museum of Cinema, and National Museum of Natural History and Science of the University of Lisbon for the collaboration with the project "Lanterna Magica – Technology and Preservation of Painted Glass Slides for Projection with Magic Lanterns". The authors would also like to acknowledge for the relevant comments of the reviewers that significantly contributed to the improvement of the manuscript.
Palavras-chave
Magic Lantern glass slides Painting materials Glass Preventive conservation Portuguese Cinematheque – Museum of Cinema National Museum of Natural History and Science (MUHNAC)