Test Observation of the 21-cm Wavelength Continuous Radiation of Halley's Comet

The test tracking observations of Halley's Comet were carried out at the Yunnan Observatory during its twice passage across the perigee with the data acquisition system, consisting of the 10-m radio telescope and a YEE 8100 or M24 micro computer. The upper limit of the intensity of the 21-cm wavelength continuous radiation of Halley's Comet is 2.22 Jy (5σ).