Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002exa....14..183b&link_type=abstract
Experimental Astronomy, v. 14, Issue 3, p. 183-193 (2002).
Astronomy and Astrophysics
Astronomy
1
Linux, Radio Astronomy, Software, Telescope Control System
Scientific paper
We have developed a control system for the Seoul Radio AstronomyObservatory (SRAO) 6-meter telescope operating in the 85 115 GHzfrequency range. Four PCs running the Linux operating system control sourcetracking, take data, execute observations and handle userinterface.The control system utilizes a modular and multiprocessingstructure to facilitate easy upgrading and troubleshooting.Communication between the processes relies on the interprocesscommunication (IPC) resources on Linux such as shared memory,message queues, and TCP/IP sockets. Communication between PCs is made via an Ethernet link. We also use digital I/O lines for some status signals whichrequire a short delay.The control system supports scheduling observations, updatesobservation logs automatically and also supports graphical userinterfaces. These all makes the operation easy.By using a commercially available motion control card with anembedded microcomputer for antenna control, we achieved atracking accuracy to better than 1 arcsec.
Byun Do-Young
Yun Young-Zoo
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