Multi-Spectral Solar Telescope Array IX: quantitative measurements of the solar corona

The Multi-Spectral Solar Telescope Array (MSSTA) is a rocket borne cluster of normal- incidence multilayer coated telescopes for the high-resolution study of the solar atmosphere and corona. In previous papers, we have described the design, calibration, and flight of the MSSTA, and reported qualitative results of those solar observations. In the present paper, we describe the MSSTA's measured quantitative instrument response to the optically thin solar coronal plasma, and present an example of the derivation of solar temperature and density diagnostic information from four photographic images obtained during the instrument's successful inaugural flight in 1991.