1 By using data of Nobeyama radio heliograph , we calculate value of magnetic field in lower corona in some active region from thermal bremsstrahlung, and preliminary result has been obtained.

2 The heliograph must thus be carefully aligned in the first instance.

3 According to the transmission requirement of solar radio heliograph, four transmitting schemes are compared and an analog optical fiber transmission system is chosen as the final mechanism.

4 Connected by telephone and heliograph to the heavy land batteries, it would hold even if the Japanese took the rest of the line.

5 The feature of optical fiber transmission system and its effect on the solar radio heliograph are analyzed in this article.

6 View from His Window at Le Gras, c. 1827. Heliograph. Gernsheim Collection.