CHSOS - Cultural Heritage Science Open Source

CHSOS - Cultural Heritage Science Open Source CHSOS promotes practical methods for the technical examination of Art and Archaeology.

29/05/2026

A 16th-century voice preserved on parchment, revealed through science. This antiphonary sheet shows how technical photography can uncover details invisible to the naked eye: iron gall ink becoming partially transparent in infrared, pigments reacting differently across the spectrum, and centuries-old materials revealing their composition without invasive sampling. The result is a deeper understanding of how these liturgical manuscripts were created and how they have aged over time. Explore the case study and see how imaging techniques help decode the hidden stories of cultural heritage. 📜🔬
Read more: https://chsopensource.org/case-studies/case-study-002-16th-century-antiphonary-parchment-sheet-2/

A 16th-century voice preserved on parchment, revealed through science. This antiphonary sheet shows how technical photog...
29/05/2026

A 16th-century voice preserved on parchment, revealed through science. This antiphonary sheet shows how technical photography can uncover details invisible to the naked eye: iron gall ink becoming partially transparent in infrared, pigments reacting differently across the spectrum, and centuries-old materials revealing their composition without invasive sampling. The result is a deeper understanding of how these liturgical manuscripts were created and how they have aged over time. Explore the case study and see how imaging techniques help decode the hidden stories of cultural heritage. 📜🔬
Read more: https://chsopensource.org/case-studies/case-study-002-16th-century-antiphonary-parchment-sheet-2/

28/05/2026

An extraordinary 18th-century hand-colored map of Jerusalem examined through Technical Photography and scientific imaging. At the center of the composition stands a symbolic bird’s-eye vision of the Holy City, surrounded by sacred figures, ritual objects, and devotional iconography rooted in early modern religious cartography.
Using Infrared Fluorescence under UV excitation, the investigation revealed an unexpected detail: the vivid red borders fluoresce strongly, suggesting the later use of modern cadmium red pigment during retouching or recoloring. A fascinating example of how scientific imaging can uncover hidden restoration histories invisible to the naked eye.
This case study explores the intersection of cartography, faith, printmaking, and material analysis—showing how non-invasive methods can deepen our understanding of historical maps and devotional prints.
Read the full case study: https://chsopensource.org/case-studies/case-study-001-18th-century-map-of-jerusalem-355-x-46-cm-hand-colored/

An extraordinary 18th-century hand-colored map of Jerusalem examined through Technical Photography and scientific imagin...
28/05/2026

An extraordinary 18th-century hand-colored map of Jerusalem examined through Technical Photography and scientific imaging. At the center of the composition stands a symbolic bird’s-eye vision of the Holy City, surrounded by sacred figures, ritual objects, and devotional iconography rooted in early modern religious cartography.
Using Infrared Fluorescence under UV excitation, the investigation revealed an unexpected detail: the vivid red borders fluoresce strongly, suggesting the later use of modern cadmium red pigment during retouching or recoloring. A fascinating example of how scientific imaging can uncover hidden restoration histories invisible to the naked eye.
This case study explores the intersection of cartography, faith, printmaking, and material analysis—showing how non-invasive methods can deepen our understanding of historical maps and devotional prints.
Read the full case study: https://chsopensource.org/case-studies/case-study-001-18th-century-map-of-jerusalem-355-x-46-cm-hand-colored/

27/05/2026

A 20th-century serigraph print examined through Technical Photography reveals how much hidden information can exist beneath the visible image.

Using Raking Light, UV Reflected, UV Fluorescence, Infrared, and Infrared Transmitted imaging, the study uncovered thick underlying ink layers, strong orange fluorescence linked to pigment behavior, and even a hidden pencil sketch invisible under normal light. Each imaging technique added a new layer of understanding to the print’s structure and making process.

This case study is a powerful example of how non-invasive imaging can expose material complexity, working methods, and concealed features inside modern prints—without taking a single sample.

Read the full case study: https://chsopensource.org/case-studies/20th-century-serigraph-print/

A 20th-century serigraph print examined through Technical Photography reveals how much hidden information can exist bene...
27/05/2026

A 20th-century serigraph print examined through Technical Photography reveals how much hidden information can exist beneath the visible image.

Using Raking Light, UV Reflected, UV Fluorescence, Infrared, and Infrared Transmitted imaging, the study uncovered thick underlying ink layers, strong orange fluorescence linked to pigment behavior, and even a hidden pencil sketch invisible under normal light. Each imaging technique added a new layer of understanding to the print’s structure and making process.

This case study is a powerful example of how non-invasive imaging can expose material complexity, working methods, and concealed features inside modern prints—without taking a single sample.

Read the full case study: https://chsopensource.org/case-studies/20th-century-serigraph-print/

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