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ARCSAT and SDSS telescope buildings at the Apache Point Observatory.
ARCSAT and SDSS telescope buildings at the Apache Point Observatory.
The ARC 3.5-meter telescope
The ARC 3.5-meter telescope
Enclosure of the SDSS
Enclosure of the SDSS
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Sunspot Visitor's Center and Museum
Sunspot Visitor's Center and Museum
Apache Point Observatory, 2010
Apache Point Observatory, 2010