About Arthur B. C. Walker Jr.
Arthur Bertram Cuthbert Walker Jr. was an American solar physicist and a pioneer of EUV/XUV optics. He developed normal incidence multilayer XUV telescopes to photograph the solar corona. Two of his sounding rocket payloads, the Stanford/MSFC Rocket Spectroheliograph Experiment and the Multi-Spectral Solar Telescope Array, recorded the first full-disk, high-resolution images of the Sun in XUV with conventional geometries of normal incidence optics. This technology is used in solar telescopes such as SOHO/EIT and TRACE, and in the fabrication of microchips via ultraviolet photolithography. He held the rank of first lieutenant, and worked in the Weapons Laboratory. In 1987, Barbee and Walker's satellites captured some of the first images of the Sun's corona.
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