Callisto is a frequency-agile spectrometer that is easily transportable and hence can be used in many locations around the globe. Deployment at different longitudes will help observing the Sun 24 hours per day, thus capturing solar events that affect the heliosphere. The total frequency range is from 45 to 870 MHz, which is optimal for detecting the earliest stages of solar eruptions. The timing of CALLISTO can be controlled by a GPS or atomic clock. Thus the relative timing is accurate to within less than one millisecond. The digital output of the spectrometer is files in FITS format which easily can be examined by existing astronomical software.<br /><br /><br />
CALLISTO has been installed in Ooty, India. It has successfully captured a first light event of solar radio flare on 2006 November 14. A second one has been installed in Gauribidanur, India and has also captured useful data on 2nd of Januar 2007. CALLISTO has been delivered to Russia (Badary near Irkutsk) in December 2007 and it has already delivered wonderful data. CALLISTO has been shipped to Costa Rica. Hosts: Jorge Paez and Marco Barrantes (university of Costa Rica) CALLISTO has also been shipped to Mexico. Host: Alejandro Lara (UNAM).Now we hope to get another CALLISTO successfully installed in South Korea by the help of local people.<br /><br /><br />
This project utilizes the advanced web communication available today (e-CALLISTO). <br /><br /><br />
All the data can be pooled together from Zurich by software. By IHY kick-off in February 2007, we are able to present dynamic spectrum of the Sun using DiRaC-Software.