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Vacuum Tower Telescope, Sacramento Peak
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The above-ground portion of the Vacuum Tower Telescope stands
above the surrounding forest at the National Solar Observatory facility
on Sacramento Peak, New Mexico.
The telescope uses a light path through a tube evacuated of air to
produce highly resolved solar images. The tower shown here covers this
vertical tube and its instrumentation, all of which move as a unit
suspended from a mercury float bearing, to track the Sun.
This picture was taken in 1980: the
telescope was
redesignated as the Richard B. Dunn Solar Telescope
in 1998 to honor its creator.
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