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, Jaffe comma Walter, 1994, 'BLACK HOLES, STELLAR DYNAMICS AND POPULATIONS IN THE NUCLEI OF A COMPLETE SAMPLE OF ELLIPTICAL GALAXIES - CONT OF 2607 - PART II', 1.0, European Space Agency, https://doi.org/10.5270/esa-9tcxsvw