Lorenzo Respighi (1824-1889) was the director of the University Observatory at the Campidoglio at Rome. Starting in October of 1869 he observed daily the entire limb of the sun recording prominences and other phenomena.
This is a reproduction in color of some of the more remarkable forms of the prominences as given in Respighi's memoir "Sulle Osservazioni spettroscopiche del bordo e delle protuberanze solari, etc. Nota III. Roma 1871."
Schellen, Heinrich. “Solar Prominence Observed by Respighi in 1870.” Spectrum Analysis in Its Application to Terrestrial Substances, and the Physical Constitution of the Heavenly Bodies. London, England: M. & N. Hanhart (Printers), 1872. https://digital.sciencehistory.org/works/bz60cx20v.