Astrophysics

1;Front Cover;1 2;Astrophysics: PART B: Radio Telescopes;4 3;Copyright Page;5 4;Contents;6 5;Contributors;12 6;Foreword;14 7;Preface;16 8;Contents of Volume 12, Parts A and C;18 9;Contributors to Volume 12, Parts A and C;22 10;Chapter 1. Radio Telescopes;24 10.1;1.1. Essentials of Radiometric Measurements;24 10.2;1.2. Types of Astronomical Antennas;30 10.3;1.3. Analysis of Paraboloidal-Reflector Systems;52 10.4;1.4. Feed Systems for Paraboloidal Reflectors;87 10.5;1.5. Antenna Calibration;105 10.6;1.6. Practical Problems of Antenna Arrays;121 11;Chapter 2. Atmospheric Effects;142 11.1;2.1. The Ionosphere;142 11.2;2.2. Structure of the Neutral Atmosphere;159 11.3;2.3. Absorption and Emission by Atmospheric Gases;165 11.4;2.4. Extinction by Condensed Water;200 11.5;2.5. Refraction Effects in the Neutral Atmosphere;209 12;Chapter 3. Radiometers;224 12.1;3.1. Radiometer Fundamentals;224 12.2;3.2. Parametric Amplifiers;248 12.3;3.3. Maser Amplifiers;269 12.4;3.4. Multichannel-Filter Spectrometers;289 12.5;3.5. Autocorrelation Spectrometers;303 13;Index for Volume 12, Part B;322 14;Index for Volume 12, Part C;327