Browse Items (54 total)

Slipher, E.C., Clark Telescope and other instruments, 1909 ca.

The Clark Telescope photographed by E.C. Slipher is shown with instruments for observation.

Unknown, Clark Telescope on Mars Hill, ca. 1897

After a trip to Tacubaya, Mexico in search of better viewing conditions, Percival Lowell returned to Flagstaff with the Clark Telescope in 1897, where…

Slipher, E.C., Clark Telescope, ca. 1909

The Clark Telescope is the oldest telescope at Lowell Observatory. Photographed in 1909 by E.C. Slipher, it has played an important role in research…

Unknown, Clark Telescope, Undated

Photograph of the 24-inch Clark Telescope in its dome on Mars Hill. This equipment is the oldest on Lowell Observatory's campus, built in 1896.…

Slipher, E.C., The 42-inch Lampland Telescope inside of its dome, 1909 ca.

A close-up photograph of the 42-inch Lampland Telescope.

Slipher, E.C., 42-inch Lampland Telescope, 1909 ca.

The 42-inch Lampland telescope and its dome.

Slipher, E.C., 42-inch Telescope Dome, 1909 ca.

The dome of the 42-inch Lampland telescope as seen through trees on Lowell Observatory's campus. Photographed by E.C. Slipher around 1909, the…

Unknown, Pluto Discovery Telescope, Undated

The Pluto Discovery Telescope, an astrograph used to discover Pluto in 1930. This astrograph took photographs on glass plates that were compared by…

Unknown, 18-inch Telescope Dome, 1894 ca.

Percival Lowell used the 18-inch Brashear refractor, lent by the Allegheny Observatory, for observing Mars. Ed Whipple is pictured in the doorway of…

Slipher, E.C., 42-inch Telescope, 1909 ca.

The 42-inch Lampland Telescope. The metal frame of the telescope now sits centrally on Lowell Observatory's campus near the Steele Visitor Center.