McDonald Observatory is 15 miles west of Fort Davis. It is operated by the University of Texas At Austin.
This is a rather sophisticated sundial.
This is the size of the lens (2.1 meter diameter) of the original main Otto Struve Telescope at McDonald Observatory.
This is the size of the lens (2.7 meter diameter) of the second main telescope at the observatory (the Harlan J. Smith Telescope).
The huge hexagonal area which is itself comprised of hexagonal shapes is the size (9.2 meter diameter) of the new Hobby-Eberly Telescope (HET) at McDonald Observatory.
The two original main telescopes are on the summit of Mt. Locke in the background.
This building houses the new Hobby-Eberly Telescope.
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