Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
European Space Agency, 2023, Andromeda And The Seven Dwarfs: M31 Mass, Satellite Orbits, And The Nature Of The Satellite Plane, 1.0, European Space Agency, https://doi.org/10.57780/esa-byadduw