Qualla: Sunspot Solar Observatory: Watching the Sun from a Mountaintop

Sunspot Solar Observatory: Watching the Sun from a Mountaintop: Introduction

Wed, 04 Feb 2026 00:00:00 GMT

Photo credit Nathanec128, CC BY-SA 4.0. In the tiny community of Sunspot, New Mexico, population measured in dozens, scientists point a 136-foot tower straight at the sun. The Sunspot Solar Observatory sits on the western ridge of the Sacramento Mountains, where the air is thin, the skies are clear, and views stretch from White Sands National Park below to El Paso and Ciudad Juarez on the distant horizon. The facility began as a U.S. Air Force project in 1950, driven by the military's sudden interest in solar physics during World War II. Radio communications depended on understanding solar activity, and forecasting required watching the sun. Seven decades later, the observatory continues its vigil, now operated by New Mexico State University in partnership with the National Solar Observatory.

Image: Nathanec128 | CC BY-SA 4.0

Sunspot Solar Observatory: Watching the Sun from a Mountaintop: The Tower That Goes Underground

Wed, 04 Feb 2026 00:00:00 GMT

Photo credit Alamo NM, CC BY-SA 4.0. The flagship instrument is the Richard B. Dunn Solar Telescope, formerly known as the Vacuum Tower Telescope. Its design is distinctive: the tower rises 136 feet above the mountain, but extends another 228 feet below ground level. This subterranean construction keeps the optical ...

Image: Alamo NM | CC BY-SA 4.0

Sunspot Solar Observatory: Watching the Sun from a Mountaintop: A Consortium of Solar Science

Wed, 04 Feb 2026 00:00:00 GMT

Photo credit NM-state, CC BY-SA 4.0. Sunspot Solar Observatory is no longer a single institution but a global consortium. Personnel work in Sunspot, at New Mexico State University in Las Cruces, and at partner institutes worldwide. The John W. Evans Solar Facility, originally built in 1952, served the High Altitude ...

Image: NM-state | CC BY-SA 4.0

Sunspot Solar Observatory: Watching the Sun from a Mountaintop: Views That Reach Four States

Wed, 04 Feb 2026 00:00:00 GMT

Photo credit Alamo NM, CC BY-SA 4.0. The overlook beside the telescope offers one of the most expansive views in the American Southwest. White Sands National Park appears as a brilliant white patch against the tan desert floor of the Tularosa Basin. On clear days, visitors can see south to El Paso and Ciudad Juarez ...

Image: Alamo NM | CC BY-SA 4.0

Sunspot Solar Observatory: Watching the Sun from a Mountaintop: Wartime Origins to Modern Science

Wed, 04 Feb 2026 00:00:00 GMT

Photo credit NOIRLab/NSF/AURA, CC BY 4.0. The observatory's existence traces to the sudden wartime urgency around solar physics. In 1940, Walter Orr Roberts and Donald Menzel established the High Altitude Observatory in Climax, Colorado, at over 11,000 feet elevation, purely to study the sun. Roberts worked with the Bure...

Image: NOIRLab/NSF/AURA | CC BY 4.0