The Very high Angular resolution ULtraviolet Telescope (VAULT) is a sounding rocket payload built to study the crucial interface between the solar chromosphere and the corona by observing the strongest line in the solar spectrum, the Ly alpha line at 1216 angstrom. In Two Flights, VAULT succeeded in obtaining the first ever sub-arcsecond (0.5) images of this region with high sensitivity and cadence. Detailed analyses of those observations have contributed ...
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