A Seeing Monitor for Solar and Other Extended Object Observations

In this article I describe a site survey facility, which measures the signals of the solar equivalent of a Differential Image Motion Monitor (S-DIMM) and of a six element linear array of solar scintillometers. Combining the S-DIMM ro andscintillometer σI observations allows the determination of the fractions of the seeing in the free atmosphere and in the ground/lake layer. From the scintillometer array observations Cn2(h) is determined for heights corresponding to the first ∼500 m along the line-of-sight. With minor changes this seeing monitor can also be used for other extended objects like the Moon and planets.