Radio Emission Sources During Solar Eclipse on March 29 2006

On the base of eclipse observations the brightness temperature of undisturbed parts of solar disk was determined during the minimum solar activity between 23 and 24-th 11-year´s cycles. The temperature was equal Td_10.5=(43.7 plusmn 0.5) 10³ K at wavelength 10.5 cm and Td_12.0= (51.8 plusmn 0.5) 10³ K at wavelength 12.0 cm. Radio brightness distribution above group of spots NOAA 0866 was calculated. It is shown that on both wavelengths the source consists of a compact bright nucleus with sizes about 50ldr10³ km, having temperature T_b10.5=0.94ldr10⁶ K and T_b12.0= 2.153ldr106 K, which are located at heights h_10.5= 33.5ldr10³ km and h_12.0= =43.35ldr10³ km above the spot, and extended halo with temperature Tb= (230-300)10³ K, reaching the height of 157ldr10³ km above photosphere. Thus, the eclipse observation on March 29, 2006 has allowed experimentally to determine the height of coronal condensation during minimum solar activity and to estimate physical parameters of plasma near to its top border.