A first look at the IRR (infrared reflectography) analysis of the Ghent Altarpiece is now available. The entire altarpiece has been photographed using the IRR technique as a way to study its underdrawings and to determine its different phases and contributors. It was initiated as part of an urgent conservation treatment in 2010.
Twenty of the IRR high resolution images are available online for study and download; further phases of the project will be posted over the next year.
The project was mainly sponsored by the Getty Foundation, in collaboration with the Royal Institute for Cultural Heritage (KIK/IRPA).
Updated Feb. 29, 2012: There’s a new link for this project.