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Bleien Radio Observatory

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Bleien Radio Observatory

Bleien Radio Observatory, Radio astronomy observatory in Gränichen, Switzerland.

Description

Bleien Radio Observatory is a research facility near Gränichen that houses two parabolic antennas measuring 7 and 5 meters across. These telescopes sit roughly 100 meters apart and receive radio waves from space across frequencies ranging from 10 MHz to 5 GHz.

History

ETH Zurich established the facility in 1979 under Professor Arnold Benz, introducing the first fully digitized remote-controlled receiver system. This technology marked a turning point in Swiss radio astronomy.

Culture

The observatory serves as a center for scientific education where students and researchers conduct radio astronomy observations and develop new technologies. Visitors can directly experience how modern instruments are used to study the sky.

Practical

The site is publicly accessible, but visits should be arranged in advance to avoid disrupting research activities. The best time to visit is during clear weather when the installations are most visible.

Did you know?

From 2005 to 2015, the observatory held the largest bandwidth capacity worldwide for solar radio observations. This exceptional capability allowed researchers to record solar flares and magnetic phenomena with unmatched detail.

Location
Inception
1979
Elevation above the sea
469 m
GPS coordinates
47.33989,8.11161
Latest update
December 14, 2025 18:44

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