Thermal Design and Thermal Behaviour of Radio Telescopes and their Enclosures

• Main Authors: Greve, Albert. (Author), Bremer, Michael. (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic
• Language: English
• Published: Berlin, Heidelberg : Springer Berlin Heidelberg, 2010.
• Series: Astrophysics and Space Science Library, 364
• Subjects: Physics.; Thermodynamics.; Engineering.; Astronomy, Observations and Techniques.; Engineering Thermodynamics, Heat and Mass Transfer.
• Online Access: https://ezaccess.library.uitm.edu.my/login?url=http://dx.doi.org/10.1007/978-3-642-03867-9

Radio telescopes as well as communication antennas operate under the influence of gravity, temperature and wind. Among those, temperature influences may degrade the performance of a radio telescope through transient changes of the focus, pointing, path length and sensitivity, often in an unpredictab...

Table of Contents:

• Foreword
• Preface
• 1 Radio Astronomy and Radio Telescopes
• 2 Radio Telescope Constructions in View of Thermal Aspects
• 3 Telescope Enclosures
• 4 The Variable Thermal Environment
• 5 Calculation of Solar Illumination
• 6 Temperature Measurements and FEM Thermal Deformation Calculations
• 7 Heat Transfer
• 8 Radiative Coupling towards Sky and Ground (External View Factor)
• 9 Measured Thermal Behaviour of Radio Telescopes
• 10 Measured Thermal Behaviour of Enclosures
• 11 Thermal Model Calculations
• 12 Beam Formation and Beam Degradation
• 13 Thermal Tolerances
• 14 Optical Telescopes and Enclosures
• 15 A Summary and Further Studies
• A Units and Fundamental Constants
• B Average Value, RootMeanSquare Value (rms)
• C Pointing Model
• D Zernike Polynomials
• E Literature
• F Picture and Graphic Credits.