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Small radio telescope in 21cm was used for studying the partial solareclipse, with magnitude 0.89, in Hong Kong on 21st June, 2020. The radiotelescope SPIDER 300A was designed and constructed by the Radio2Space Company,Italy. Radio flux density time curves (light curve) and a two-dimension mappingof the eclipse is presented in this paper. Standard radio data reductionmethods were used to obtain the intensity time curve. We also adopted thesemi-pipeline method for the reduction of data to obtain the same results aswith the built-in software of the radio telescope SPIDER 300A. The total solarradio flux of the eclipse was found to reduce by maximum 55 +/- 5 percent,while the maximum eclipsed area of the same eclipse is 86.08%. Other radioobservations of solar eclipses in Hong Kong are also discussed in this paper,including SPIDER 300A observation of partial solar eclipse on 26th December2019 (APPENDIX A); and small radio telescope (SRT), developed by the HaystackObservatory, MIT, USA, observation of 2020 eclipse (APPENDIX B).

Solar eclipse observations with small radio telescope in Hong Kong in 21cm radio frequency band