Percival Lowell detail in mid-1896 soon after the Alvan Clark & Sons refracting telescope was installed at his new Flagstaff, Arizona observatory. Lowell observed the planet high in the daytime sky with the telescope's lens stopped down to 3 inches in diameter to reduce the effect of the turbulent daytime atmosphere. Lowell observed spoke-like surface features including a central dark spot, contrary to what was suspected then (and known now): that Venus has no surface features visible from Earth, being covered in an atmosphere that is opaque. It has been noted in a 2003 "Journal for the History of Astronomy" paper and
Perkins Observatory its financial resources to purchasing time on the Large Binocular Telescope on Mount Graham. The telescope was sold outright to Lowell Observatory by Ohio Wesleyan. (The proceeds of this sale went into the Perkins Observatory Endowment Fund.) Staff members who were technically Ohio State University employees started receiving their paychecks from OWU. Currently, regular observing programs are held almost every Friday and Saturday night throughout the year. Programs are held on other evenings and during the day by special appointment. A monthly lecture series detailing various current topics in astronomy is ongoing. Occasional special events (like telescope fairs, celebrity guest