Abstract
A method for studying small scale photospheric velocity fields with a balloon experiment is proposed. A sodium resonance cell is used with a diffraction limited telescope. Good pointing accuracy is not necessary. Preliminary results of ground-based observations are given.
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Fossat, E., Roddier, F. A sodium experiment for photospheric velocity field observations. Sol Phys 18, 204–210 (1971). https://doi.org/10.1007/BF00145932
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DOI: https://doi.org/10.1007/BF00145932