Compound Astronomical Low cost Low frequency Instrument for Spectroscopy and Transportable Observatory
Global network of radio spectrometers for observing the sun 24 hours a day.
e-Callisto consists of more than 139 radio spectrometers set up in over 75 locations reaching from Mongolia to Uruguay. The global distribution of the instruments allows for observing solar radio emissions received in different regions of the planet and without interruptions during night time. Of particular interest are the radio bursts which frequently occur after a solar flare, and may lead to radio blackouts and in the interruption of radio communication. Radio bursts are a central indicator of space weather.
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-Callisto radio spectrometers are distributed throughout the globe which allows for seamless radio observation 24 hours a day. Credit: Christian Monstein ETHZ
The Institute for Astronomy at ETH Zurich has been operating the Bleien radio observatory since 1979. Various antennas and spectrometers have been in operation and still are today. In 2010 heliophysics moved to the Institute of 4D Technologies at Fachhochschule Nordwestschweiz (FHNW) in Windisch, Switzerland, where a new group was built up. FHNW is now responsible for archiving all solar data and manages the analysis software. Credit: craf.eu