Indian Astronomical Observatory, Astronomical observatory in Hanle, India.
The Indian Astronomical Observatory sits at 4,500 meters (14,760 feet) elevation and houses optical, infrared, and gamma-ray sensitive telescopes for space exploration. The instruments stand within several white dome structures that contrast against the bare mountain terrain.
Operations began in 2001 and marked the country's entry into high-altitude sky research with advanced equipment. The site choice followed years of searching for a place with low humidity and minimal light pollution.
The facility bridges local customs with scientific work through education initiatives for people living nearby. Many families from surrounding villages attend lectures about star patterns and learn the names visible overhead at night.
Visitors need a permit and should spend several days adjusting to the altitude beforehand to avoid discomfort. Warm clothing is essential because of the harsh climate and low temperatures even during summer months.
The location in the Changthang highland plateau allows over 255 clear nights per year, ranking among the best conditions worldwide. The dry air and dark sky enable measurements of faint cosmic signals that are barely visible elsewhere.
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