POLARBEAR, Radio telescope at Cerro Toco, Atacama Desert, Chile
The POLARBEAR experiment features a 2.5-meter diameter telescope mounted on the Huan Tran Telescope structure at the James Ax Observatory in northern Chile.
The instrument began collecting data in January 2012 after being relocated from California to Chile, marking a new chapter in cosmic microwave background research.
Scientists from multiple international institutions collaborate at this facility to advance understanding of the early universe through cosmic microwave background measurements.
The telescope operates at an elevation of 5200 meters in the Atacama Desert, where dry atmospheric conditions enable precise observations at 150 GHz frequency.
POLARBEAR detected B-mode polarization patterns at 150 GHz, providing evidence of gravitational lensing effects on cosmic microwave background radiation.
Location: Atacama Desert
Elevation above the sea: 5,200 m
Diameter: 2.5 m
Part of: Simons Array
Website: http://bolo.berkeley.edu/polarbear
GPS coordinates: -22.95806,-67.78622
Latest update: March 13, 2025 09:27
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