Mt. Hopkins is a mountain located in the Santa Rita Mountains of southern Arizona, USA. It is home to several astronomical observatories, including the Fred Lawrence Whipple Observatory operated by the Harvard-Smithsonian Center for Astrophysics. Research conducted at Mt. Hopkins focuses on a variety of astronomical topics, including studying the origins and evolution of galaxies, searching for exoplanets, and observing transient astronomical events such as supernovae. The location's high elevation and clear skies make it an ideal site for astronomical research.