Mingantu Observing Station （MOS）
Mingantu Spectral Radioheliograp (MUSER) is a solar dedicate broadband spectral radioheliograph, which was established in Inner Mongolia of China. MUSER consists of 100 radio antennas in a three-spiral-arms configuration, with the longest baseline being 3.0 km. It includes two sub-arrays, MUSER-I and MUSER-II, with frequency ranges of 0.4–2.0 GHz and 2.0–15.0 GHz, respectively. MUSER is an aperture synthesis solar radio telescope array that can observe the full Sun in centimetric-decimetric wavelengths with high resolutions and dual polarizations.