*2.1. PHI Instrument and Solar Orbiter Mission*

The Solar Orbiter mission, developed by the European Space Agency (ESA) in collaboration with NASA, focuses on the study of the Sun and magnetic activity in the heliosphere and will be able to obtain unique information to help understand the operation of this star and even predict its behavior. One of its devices, the PHI instrument (composed of about 1500 pieces) is the largest and perhaps the most complex. It will provide high-resolution and full-disk measurements of the photospheric vector magnetic field and line-of-sight (LOS) velocity as well as the continuum intensity in the visible wavelength range.

Due to its complexity, this instrument has been developed by an international consortium involving Germany, Spain, and France among other countries. The coordination of the Spanish part is carried out by the Institute of Astrophysics of Andalusia (IAA-CSIC), the Institute of Astrophysics of the Canary Islands (IAC), the National Institute of Aerospace Technology (INTA), the University of Valencia, the University of Barcelona, and the Technical University of Madrid.

Fab Lab ULL has produced the two-dimensional graphic documentation and the full-scale high-detail model of the SO/PHI, in order to explain its morphology and disposition of subassemblies. This physical model allows the dissemination of the research carried out by the Spanish part and is intended to have the same level of detail as the original project.
