The Position and Movement on the Solar Disk of Sources of Radiation at a Frequency of 97 Mc/s. I. Equipment

Abstract

The spaced aerial interference technique, au used in radio astronomy, has been modified in order to observe solar disturbances winch are either of short duration or are rapidly changing in position. The interference pattern is obtained in 1/25 of a second by sweeping the aerial lobe pattern across the source, 25 times per second. The position of the source and the polarization of the radiation are determined separately, a complete record taking about one second. Two different aerial spacings are used and calibration is carried out by a novel method. An equipment operating on 97 Mc/s., which has been used for observations of solar disturbances, is described and the sources of error discussed.