FE model-based interpretation of telescope temperature variations

Michael Bremer; Juan Penalver

doi:10.1117/12.489813

30 July 2002 FE model-based interpretation of telescope temperature variations

Michael Bremer, Juan Penalver

Proceedings Volume 4757, Integrated Modeling of Telescopes; (2002) https://doi.org/10.1117/12.489813
Event: Workshop on Integrated Modeling of Telescopes, 2002, Lund, Sweden

Abstract

At the IRAM 30m telescope on Pico Veleta, Spain, an extended net of temperature sensors has been installed in 1996 and their data recorded since. A finite element (FE) model of the antenna has been used to analyse these measurements and to refine the sensor network. Details on the optimum choice of sensor locations will be presented, and how their readings are interpolated onto the model grid. From the model, structural deformations are obtained and converted into observable telescope parameters. These parameters, like focus, pointing and large-scale surface deformations, will be used to upgrade the real-time instrumental performance and to provide the astronomer with data for an eventual correction of observations.

Citation Download Citation

Michael Bremer and Juan Penalver "FE model-based interpretation of telescope temperature variations", Proc. SPIE 4757, Integrated Modeling of Telescopes, (30 July 2002); https://doi.org/10.1117/12.489813

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