TY - GEN
T1 - Application of SQL database to the control system of MOIRCS
AU - Yoshikawa, Tomohiro
AU - Omata, Koji
AU - Konishi, Masahiro
AU - Ichikawa, Takashi
AU - Suzuki, Ruyji
AU - Tokoku, Chihiro
AU - Uchimoto, Yuka Katsuno
AU - Nishimura, Tetsuo
PY - 2006/10/17
Y1 - 2006/10/17
N2 - MOIRCS (Multi-Object Infrared Camera and Spectrograph) is a new instrument for the Subaru telescope. In order to perform observations of near-infrared imaging and spectroscopy with cold slit mask, MOIRCS contains many device components, which are distributed on an Ethernet LAN. Two PCs wired to the focal plane array electronics operate two HAWAII2 detectors, respectively, and other two PCs are used for integrated control and quick data reduction, respectively. Though most of the devices (e.g., filter and grism turrets, slit exchange mechanism for spectroscopy) are controlled via RS232C interface, they are accessible from TCP/IP connection using TCP/IP to RS232C converters. Moreover, other devices are also connected to the Ethernet LAN. This network distributed structure provides flexibility of hardware configuration. We have constructed an integrated control system for such network distributed hardwares, named T-LECS (Tohoku University - Layered Electronic Control System). T-LECS has also network distributed software design, applying TCP/IP socket communication to interprocess communication. In order to help the communication between the device interfaces and the user interfaces, we defined three layers in T-LECS; an external layer for user interface applications, an internal layer for device interface applications, and a communication layer, which connects two layers above. In the communication layer, we store the data of the system to an SQL database server; they are status data, FITS header data, and also meta data such as device configuration data and FITS configuration data. We present our software system design and the database schema to manage observations of MOIRCS with Subaru.
AB - MOIRCS (Multi-Object Infrared Camera and Spectrograph) is a new instrument for the Subaru telescope. In order to perform observations of near-infrared imaging and spectroscopy with cold slit mask, MOIRCS contains many device components, which are distributed on an Ethernet LAN. Two PCs wired to the focal plane array electronics operate two HAWAII2 detectors, respectively, and other two PCs are used for integrated control and quick data reduction, respectively. Though most of the devices (e.g., filter and grism turrets, slit exchange mechanism for spectroscopy) are controlled via RS232C interface, they are accessible from TCP/IP connection using TCP/IP to RS232C converters. Moreover, other devices are also connected to the Ethernet LAN. This network distributed structure provides flexibility of hardware configuration. We have constructed an integrated control system for such network distributed hardwares, named T-LECS (Tohoku University - Layered Electronic Control System). T-LECS has also network distributed software design, applying TCP/IP socket communication to interprocess communication. In order to help the communication between the device interfaces and the user interfaces, we defined three layers in T-LECS; an external layer for user interface applications, an internal layer for device interface applications, and a communication layer, which connects two layers above. In the communication layer, we store the data of the system to an SQL database server; they are status data, FITS header data, and also meta data such as device configuration data and FITS configuration data. We present our software system design and the database schema to manage observations of MOIRCS with Subaru.
KW - Instrument control system
KW - Linux
KW - Near-infrared
KW - SQL database
UR - http://www.scopus.com/inward/record.url?scp=33749363664&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749363664&partnerID=8YFLogxK
U2 - 10.1117/12.670957
DO - 10.1117/12.670957
M3 - Conference contribution
AN - SCOPUS:33749363664
SN - 0819463396
SN - 9780819463395
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advanced Software and Control for Astronomy
T2 - Advanced Software and Control for Astronomy
Y2 - 24 May 2006 through 26 May 2006
ER -