Mr. Jose Nicolas Gonzalez Perez Profile

Jose Nicolas Gonzalez Perez

Post Doctoral Researcher at Hamburger Sternwarte

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Proceedings Article | 21 July 2008 Paper

Controlling the Hamburg Robotic Telescope: a description of the software

Jose González-Pérez, Alexander Hempelmann, Marco Mittag, Hans-Jürgen Hagen

Proceedings Volume 7019, 70192V (2008) https://doi.org/10.1117/12.796646

KEYWORDS: Telescopes, Stars, Control systems, Robotics, Cameras, Calibration, Spectrographs, Mirrors, Space telescopes, Lamps

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The Hamburg Robotic Telescope (HRT) is a fully automatic 1.2m telescope designed for high resolution spectroscopy of active stars. It uses the Heidelberg Extended Range Optical Spectrograph (HEROS) which is fed by a 50μm fiber connected to the Nasmyth focus of the telescope through an adapter. Here we present the software that controls the whole system of the HRT. This software works both in fully automatic and interactive mode. It organizes the interaction between the Central Control System (CCS: the core of the system) and the subsystems: building, telescope, spectrograph, adapter, environmental sensors (weather station and sky monitor) and scheduler. The CCS performs its operation by sending commands (ASCII messages through TCP/IP sockets) to the different subsystems. The robotic operation is divided into discrete procedures, such as "Initialization", "Observation" or "Calibration". Each procedure consists of a set of commands which will be carried out (sequentially or even in parallel) if a set of conditions is met: e.g. only when one command is successfully accomplished, the next will be sent. Furthermore, the Error Handler takes the necessary actions when a problem inhibits the normal progress of the observation (e.g. bad weather, non-detection of the target or technical problems. The scheduler selects the target from a primary list in a manner which combines the scientific priority with observational feasibility and the history of observations. Finally, we present the Automatic Reduction Pipeline developed on the basis of REDUCE, an IDL reduction package, to obtain the final spectrum from the raw data.

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