The New Multichannel Radiospectrograph ARTEMIS-IV/HECATE, of the University of Athens |
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| Authors: | C Caroubalos D Maroulis N Patavalis J-L Bougeret G Dumas C Perche C Alissandrakis A Hillaris X Moussas P Preka-Papadema A Kontogeorgos P Tsitsipis G Kanelakis |
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| Institution: | (1) Department of Informatics, University of Athens, Athens, Greece;(2) Department de Recherche Spatial, Observatoire de Paris, CNRS UA 264 Meudon, France;(3) Section of Astro-Geophysics, University of Ioannina, Ioannina, Greece;(4) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Athens, Athens, Greece;(5) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Athens, Athens, Greece;(6) Department of Electrical Engineering, Technological Education Institute of Lamia, Lamia, Greece;(7) Thermopylae, O.T.E. Inmarsat, Skarpheia, Molos Greece |
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| Abstract: | We present the new solar radiospectrograph of the University of Athensoperating at the Thermopylae Station since 1996. Observations cover thefrequency range from 110 to 688 MHz. The radiospectrograph has a 7-meterparabolic antenna and two receivers operating in parallel. One is a sweepfrequency receiver and the other a multichannel acousto-optical receiver.The data acquisition system consists of a front-end VME based subsystem anda Sun Sparc-5 workstation connected through Ethernet. The two subsystems areoperated using the VxWorks real-time package. The daily operation is fullyautomated: pointing of the antenna to the sun, starting and stopping theobservations at pre-set times, data acquisition, data compression by`silence suppression', and archiving on DAT tapes. The instrument can beused either by itself to study the onset and evolution of solar radio bursts or in conjunction with other instruments including theNançay Decametric Array and the WIND/WAVES RAD1 and RAD2 low frequencyreceivers to study associated interplanetary phenomena. |
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| Keywords: | instrumentation solar radio astronomy solar radio bursts radiospectrograph |
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