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Giotto Unveiled: New Developments in Imaging and Elemental Analysis Techniques for Cultural Heritage

  • Nicola Ludwig
  • Letizia Bonizzoni
  • Michele Caccia
  • Francesco Cavaliere
  • Marco Gargano
  • Daniele Viganò
  • Christian Salvatore
  • Matteo Interlenghi
  • Marco Martini
  • Anna Galli
Conference paper

Abstract

The Giotto’s masterpiece God the Father with Angels, never investigated till now, was studied by our team of local researchers, involved in application of scientific methods for cultural heritage since many years. Exploiting the integration of different knowledges, technologies and resources of our team, we were able to provide data to understand the painting technique, the pigment used and the underdrawing of this Giotto’s painting. We performed the following non-invasive analyses: Macro-XRF scanning (MA-XRF), Fiber optic reflectance spectroscopy (FORS), high resolution IR scanning reflectography, infrared false color (IRFC). Only portable instrumentations were used, with operating times compatible with the opening hours of exhibition. In particular, the analytical campaign was the opportunity to test the portable IR scanning prototype based on a peculiar spherical scanning system characterized by light weight and low cost motorized head. The analytical results revealed a painting technique already used by Giotto and based on different superimposed pigment layers. By combining the effectiveness of scanning portable-XRF (pXRF) with the responsive of image spectroscopic analysis, we move step by step toward the discovery of Giotto’s palette, with particular attention to the flesh tones in God the Father with Angels. The imaging data support the hypothesis of a detailed underlying sketch that includes also a drawing characterized by larger brush signs; the use of patrones for the face of “God” was supposed thanks to comparison with other Giotto masterpieces.

Keywords

Infrared reflectography XRF Reflectance spectroscopy Pigment 

Notes

Acknowledgements

We are grateful to XGLab s.r.l. for kindly placing ELIO MA-XRF scanning spectrometer at disposal. The authors would like to especially thank Michael A. Brown, Associate Curator of European Art at the San Diego Museum of Art.

References

  1. 1.
    S. Romano, P. Petraroia, Giotto, l’Italia. Catalogo della mostra (Mondadori Electa, Milano, 2015)Google Scholar
  2. 2.
    M. Ciatti, M. Seidel, Giotto: the crucifix in Santa Maria Novella, ed. by M. Ciatti, M. Seidel Paperback (Deutscher Kunstverlag, 2005)Google Scholar
  3. 3.
    M. Gargano, F. Cavaliere, D. Viganò, A. Galli, N. Ludwig, A new spherical scanning system for infrared reflectography of paintings. Infrared Phys. Technol. 81, 128–136 (2017).  https://doi.org/10.1016/j.infrared.2016.12.011ADSCrossRefGoogle Scholar
  4. 4.
    A. Galli, M. Caccia, R. Alberti, L. Bonizzoni, N. Aresi, T. Frizzi, L. Bombelli, M. Gironda, M. Martini, Discovering the material palette of the artist: a p-XRF stratigraphic study of the Giotto panel ‘God the Father with Angels’. X-Ray Spectr. 46, 435–441 (2017).  https://doi.org/10.1002/xrs.2751ADSCrossRefGoogle Scholar
  5. 5.
    M. Bertucci, L. Bonizzoni, N. Ludwig, M. Milazzo, A new model for x-ray fluorescence autoabsorption analysis of pigment layers. X-Ray Spectr. 39(2), 135–141 (2010)ADSCrossRefGoogle Scholar
  6. 6.
    M. Gargano, N. Ludwig, G. Poldi, A new methodology for comparing IR reflectographic systems. Infrared Phys. Technol. 49, 249–253 (2007).  https://doi.org/10.1016/j.infrared.2006.06.013ADSCrossRefGoogle Scholar
  7. 7.
    M. Alfeld, J. Vaz Pedroso, M.van E., Hommes, G.V. der Snickt, G. Tauber, J. Blaas, M. Haschke, K. Erler, J. Dik, K. Janssens, A mobile instrument for in situ scanning macro-XRF investigation of historical paintings. J. Anal. Atom. Spectr. 28, 760–767 (2013).  https://doi.org/10.1039/c3ja30341a
  8. 8.
    M. Gargano, N. Ludwig, V. Federighi, R. Sykes, G. Lodi, A. Sardella, A. Carrassi, E.M. Varoni, Fiber optics reflectance spectroscopy (45°x: 45°) for color analysis of dental composite. Am. J. Dent. 29, 223–228 (2016)Google Scholar
  9. 9.
    M. Bacci, A. Casini, C. Cucci, M. Picollo, B. Radicati, M. Vervat, Non-invasive spectroscopic measurements on the Il ritratto della figliastra by Giovanni Fattori: identification of pigments and colourimetric analysis. J. Cult. Herit. 4, 329–336 (2003).  https://doi.org/10.1016/j.culher.2003.09.003CrossRefGoogle Scholar
  10. 10.
    M. Gargano, N. Ludwig, D. Pandini, Use of optical fibre in spectrometry and colorimetry with remote probes. JAIC J. Int. Colour Assoc. 8 (2012)Google Scholar
  11. 11.
    L. Bonizzoni, C. Colombo, S. Ferrati, M. Gargano, M. Greco, N. Ludwig, M. Realini, A critical analysis of the application of EDXRF spectrometry on complex stratigraphies. X-Ray Spectr. 40, 247–253 (2011).  https://doi.org/10.1002/xrs.1320ADSCrossRefGoogle Scholar
  12. 12.
    L. Bonizzoni, S. Bruni, A. Galli, M. Gargano, V. Guglielmi, N. Ludwig, L. Lodi, M. Martini, Non-invasive in situ analytical techniques working in synergy: the application on graduals held in the Certosa di Pavia. Microchem. J. 126, 172–180 (2016).  https://doi.org/10.1016/j.microc.2015.12.001CrossRefGoogle Scholar
  13. 13.
    M. Ciatti, L’officina di Giotto - Il restauro della Croce di Ognissanti (EDIFIR, Firenze, 2010)Google Scholar
  14. 14.
    L. Bonizzoni, M. Gargano, N. Ludwig, M. Martini, A. Galli, Looking for common fingerprints in Leonardo’s pupils using nondestructive pigment characterization. Appl. Spectrosc. 71, 1915–1926 (2017).  https://doi.org/10.1177/0003702817694901ADSCrossRefGoogle Scholar
  15. 15.
    C.D. Cennini, The Craftsman’s Handbook (Dover Publications, York, 1954)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Dipartimento di Fisica “Aldo Pontremoli”Università degli Studi di MilanoMilanItaly
  2. 2.CNR-IFNMilanItaly
  3. 3.Dipartimento di Scienza dei MaterialiUniversità di Milano-BicoccaMilanItaly
  4. 4.CNR-IBFMSegrate, MilanItaly

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