频率灵活太阳射电望远镜（Frequency-Agile Solar Radiotelescope，简称FASR）是在微波频段对太阳进行观测的下一代射电望远镜。与其他通用射电望远镜类似甚大天线阵（VLA）相比，FASR是太阳专用的射电望远镜。与其他天体相比，太阳辐射具有非常高的时间变量和辐射范围。FASR的观测频段从0.1-30GHz。。

Frequency-Agile Solar Radiotelescope (FASR) is a next-generation radio telescope for solar observation in radio and microwave frequency range.

On contrary to other general-purpose radio telescopes such as VLA, FASR is specifically designed for solar observation. Compared with other astronomical sources, the emission from the sun is highly time variable and the range of emission is very high.