Differential-interferometer seeing meter.

@article{Ward1967DifferentialinterferometerSM,
  title={Differential-interferometer seeing meter.},
  author={R. C. Ward and G{\'e}rard Berry},
  journal={Applied optics},
  year={1967},
  volume={6 6},
  pages={1136-7}
}
A new interferometric instrument is described that measures time-varying distortions of the wavefronts of light propagating through the earth's atmosphere. Specifically, it is used to deter­ mine the phase structure function, an important indicator of the extent to which atmospheric turbulence degrades the resolution of telescopes and cameras and the… CONTINUE READING