ocr: UVCS PRINCIPAL INVESTIGAIOR: John L. Kohl, Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, USA. This work is supported by the National Aeronautics and Space Ad- ministration under grant NAG5-3192 to the Smithsonian Astro- physical Observatory, by Agenzia Spaziale Italiana, and by the ESA PRODEX program (Swiss contribution). INSTRUMENT UVCS consists of a telescope spectrometer unit (TSU) and a re- mote electronics unit (REU). The TSU is a triple telescope with ex- ternal and internal occultation and a high-resolution, three-chan- nel spectrometer assembly (covering the 940-1 13 ...