The DOI for all versions of this document (.zip) is 10.5281/zenodo.3607301 Difference between version 1.1.0 (https://doi.org/10.5281/zenodo.4548090) & version 1.1.1 Typos and orthography Adding technical information to the filters section. Renumbering figures after adding diagram to filters section This document was created to provide an insight in and review on the technical infrastructure in use for the Narrow Band Multi-Spectral Imaging (NBMSI) system of the 3Pi Project (Book Heritage Lab, Faculty of Theology and Religious Studies, KU Leuven), operated in the Imaging Lab of the KU Leuven Libraries. At KU Leuven this narrow band multi-spectral imaging infrastructure has been obtained and is being operated within the framework of this 3Pi Project (Diagnosis of Papyrus-Paper-Parchment manuscripts through advanced Imaging, AKUL/17/001, FWO: I009918N, Mid-scale Research Infrastructure). This NBMSI system was created by R.B. Toth and Associates LLC, in association with Equipose Imaging LLC and Phase One A/S and their local partners; the acquisition software of the system is Spectral XV. The technical infrastructure acquired by the 3Pi Project is part of the Faculty of Theology and Religious Studies. Promotor-spokesman is prof. dr. Johan Leemans; coordinator is prof. dr. Lieve Watteeuw (Head Book Heritage Lab); implementation of the NBMSI system by Bruno Vandermeulen (Head Imaging Lab) & Hendrik Hameeuw (Advanced Imaging, Imaging Lab). The NBMSI system at KU Leuven consists of: Phase one XF IQ4 150MP Achromatic Camera System (light sensor) Schneider Kreuznach 120mm LS f/4.0 Macro (lens) Filter wheel with band pass and long pass filters 2 Eureka light panels TX Transmitting Module Kaiser rePRO RSP (copystand) Spectral XV software