e-Callisto
MEXICO-ENSENADA-UNAM

e-Callisto
International Network of Solar Radio Spectrometers, a Space Weather Instrument Array

The Callisto solar spectrometer is a programmable heterodyne receiver designed in 2006 by Christian Monstein, a member of the Radio Astronomy Group at ETH Zurich, Switzerland. Several Callisto receivers are installed worldwide and are part of the e-Callisto network. You can access the data for the entire network here

The Callisto MEXICO-ENSENADA-UNAM station is located at the facilities of the National Astronomical Observatory in the San Pedro Mártir mountain range, Baja California, belonging to the Institute of Astronomy, Ensenada Academic Headquarters, of the National Autonomous University of Mexico (UNAM). It is configured to monitor the 45-90 MHz band, at 200 frequencies, four times per second. It uses an LWA crossed dipole antenna. It also has a power coupler with a quadrature (LWAPC-Q) that feeds the crossed dipole antenna's active balun array through the coaxial transmission lines. The LWAPC-Q has two identical RF circuits and is inserted between the antenna array and the receivers. This allows for discrimination of circular polarizations received by linearly polarized crossed dipoles.

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