Combined MASS-DIMM instruments for atmospheric turbulence studies
Combined MASS-DIMM instruments for atmospheric turbulence studies
Several site-testing programmes and observatories currently use combined Multi-Aperture Scintillation Sensor (MASS)–Differential Image Motion Monitor (DIMM) instruments for monitoring parameters of optical turbulence. The instrument is described here. After a short recall of the measured quantities and operational principles, the optics and electronics of MASS–DIMM, interfacing to telescopes and detectors, …