For much of its history, the Clark telescope was involved with research, beginning with Percival Lowell's perception of Martian canals and oases. V.M. Slipher's spectrographic observations through the Clark telescope in the early 20th century contributed to the discovery of the expansion of the universe.
As the "Restore The Clark" Campaign Launch [http://www.indiegogo.com/projects/restore-the-clark] notes, "In the 1960s, a team of scientists and artists used the Clark Telescope to create detailed maps of the moon in support of America's manned voyages to the moon."
Help restore the Clark!