Near West Mars Hill Road 0.6 miles west of West Santa Fe Avenue.
Lowell Observatory has been designated a Registered National Historic Landmark Under the provisions of the Historic Sites Act of August 21, 1935 this site possesses exceptional value in commemorating or illustrating the History of The . . . — — Map (db m149455) HM
Near West Mars Hill Road 0.6 miles west of West Santa Fe Avenue.
A gift to the Observatory from President A. Lawrence Lowell through this instrument the ninth planet Pluto was first found in 1930 ”It means a planet out there as yet unseen by Man, but certain sometime to be detected and added to the . . . — — Map (db m149454) HM
Near West Mars Hill Road 0.6 miles west of West Santa Fe Avenue.
Understanding and predicting local weather patterns helps astronomers plan successful observing runs. Because of this, observatories such as Lowell typically maintain weather stations to monitor the conditions. One such station was set up at the . . . — — Map (db m149452) HM
Near West Mars Hill Road 0.6 miles west of West Santa Fe Avenue.
This 11-ton telescope, built by the Alvan Clark & Sons Telescope Manufacturing Company of Cambridgeport, Massachusetts, was installed at Lowell Observatory in 1909. It came with four secondary mirror combinations so that it could be operated at . . . — — Map (db m149451) HM
Near West Mars Hill Road 0.6 miles west of West Santa Fe Avenue.
Another life-long employee of Lowell Observatory, Henry is best remembered for his Proper Motion Study of 1971, which entailed repeating the Pluto search plates after 25 years to determine whatever changes had taken place in the background of . . . — — Map (db m149456) HM
