Frequently asked
Is tonight good for stargazing at Atacama Desert?
The live score above pulls today's forecast and runs it through StarCast's scoring model, factoring in cloud cover, moon illumination, Bortle class, humidity, and atmospheric transparency. Above 70 is an excellent night. Below 40, conditions are poor. The score updates daily.
What makes Atacama Desert good for astrophotography?
The Atacama Desert in northern Chile is widely considered the best place on Earth for ground-based astronomical observation. The plateau sits at 2,400 meters around San Pedro de Atacama, with virtually zero precipitation (some areas have not recorded rain in centuries), humidity consistently below 10 percent, and an average of 330 clear nights per year. It is home to ALMA, ESO's Paranal Observatory, and the planned Extremely Large Telescope for exactly these reasons. Bortle Class 1 conditions are standard across the altiplano, the galactic center rises nearly overhead in Southern Hemisphere winter, and the Magellanic Clouds are prominent in the southern sky year-round at this latitude.
When is the Milky Way visible at Atacama Desert?
The galactic core is visible year-round in the Atacama, but the best season runs from April through October when the core is highest in the sky and nights are longest. The Atacama winter (June through August) is prime: cold, dry, and with the galactic center nearly overhead during the darkest hours. The one exception is the Bolivian winter (locally called invierno boliviano), which brings high-altitude cloud and occasional rain in January and February. Outside of that window, nearly every night is shootable. The Valle de la Luna, Salar de Atacama, and the altiplano salt flats around San Pedro are the most accessible shooting locations.
