Authors: S. Hefti and R. Kallenbach
Reference: Proc. of the Week of Doctoral Students, Charles University, Prague, Czech Republic, (1994) 176-179.
The SOHO mission will deepen our understanding of the sun. The CELIAS instrument on board of SOHO will measure the charge state, the elemental and the isotopic abundances of the solar wind. Two sensors of CELIAS, STOF and CTOF, are described and the calibration of there [their] entrance systems is discussed.