Abstract
We have developed a control system for the Seoul Radio Astronomy Observatory (SRAO) 6-meter telescope operating in the 85–115 Ghz frequency range. Four PCs running the Linux operating system control source tracking, take data, execute observations and handle user interface. The control system utilizes a modular and multiprocessing structure to facilitate easy upgrading and troubleshooting. Communication between the processes relies on the interprocess communication (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 which require a short delay. The control system supports scheduling observations, updates observation logs automatically and also supports graphical user interfaces. These all makes the operation easy. By using a commercially available motion control card with an embedded microcomputer for antenna control, we achieved a tracking accuracy to better than 1 arcsec.
Similar content being viewed by others
References
Choi, H.-K. et al.: 2003, Development of The SRAO 1024-channel Digital Auto-Correlator. Internat. J. Infrared Millimeter Waves 24, 683–695.
Koo, B.-C. et al.: 2003, Performance of the SRAO 6-meter Radio Telescope. J. Korean Astron. Soc. 36, 43–48.
Lee, J. W., et al.: 2002, Development of SRAO 3 MM SIS receiver Internat. J. Infrared Millimeter Waves 23, 47–59.
Wright, M.: 1991, Measurement of Panels for BIMA Antennas BIMA Memo, No. 6.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Byun, DY., Yun, YZ. Development of Control Softwares for the SRAO 6-Meter Telescope Based on PCs Running Linux. Experimental Astronomy 14, 183–193 (2002). https://doi.org/10.1023/B:EXPA.0000009967.00716.98
Published:
Issue Date:
DOI: https://doi.org/10.1023/B:EXPA.0000009967.00716.98