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Paper: Design of the Telemetry Control System for the Large Binocular Telescope
Volume: 351, Astronomical Data Analysis Software and Systems XV
Page: 727
Authors: De La Pena, M.D.; Axelrod, T.
Abstract: The Telemetry Control Subsystem (TEL) of the Large Binocular Telescope (LBT) is responsible for capturing sets of time-sampled telescope control system data, referred to as streams. These streams can originate in any of the LBT telescope control subsystems and are delivered over a dedicated 1 Gbit/s network to a telemetry archive. The telescope control subsystems are autonomous entities which control telescope hardware through low-level interfaces (e.g., enclosure, mirror cell, pointing and mount control, etc.).
The stream type, characterized according to the main associated subsystem, and the sets of variables which comprise a telemetry stream are currently pre-defined in a MySQL database. A graphical user interface developed in Qt provides the functionality which allows the user to start a pre-defined stream, set the parameters under which the stream should be initiated, and the option to generate a graphical view of the data stream. The graphics are handled by MATLAB and its accompanying GUI builder, GUIDE. The actual data stream is written out to a series of Hierarchical Data Format (HDF) files; the HDF files serve as the stream archive which is tracked by the MySQL database.
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