Solar Orbiter is a mission of international cooperation between the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA), operated by ESA.
The Solar Orbiter Heliospheric Imager (SoloHI) instrument was designed, built, and is now operated by the US Naval Research Laboratory with the support of the NASA Heliophysics Division, Solar Orbiter Collaboration Office under DPR NNG09EK11I. The NRL effort was also supported by the Office of Naval Research.
Solar Orbiter has an open data policy.
The appropriate journal reference to use for SoloHI data is Howard, R. et al. (2020), The Solar Orbiter Heliospheric Imager (SoloHI), A&A, 642, 23, https://doi.org/10.1051/0004-6361/201935202