SUMER - SOLAR ULTRAVIOLET MEASUREMENTS OF EMITTED RADIATION

The instrument SUMER - Solar Ultraviolet Measurements of Emitted Radia tion is designed to investigate structures and associated dynamical pr ocesses occurring in the solar atmosphere, from the chromosphere throu gh the transition region to the inner corona, over a temperature range from 10(4) to 2 x 10(6) K and above. These observations will permit d etailed spectroscopic diagnostics of plasma densities and temperatures in many solar features, and will support penetrating studies of under lying physical processes, including plasma flows, turbulence and wave motions, diffusion transport processes, events associated with solar m agnetic activity, atmospheric heating, and solar wind acceleration in the inner corona. Specifically, SUMER will measure profiles and intens ities of EUV lines; determine Doppler shifts and line broadenings with high accuracy; provide stigmatic images of the Sun in the EUV with hi gh spatial, spectral, and temporal resolution; and obtain monochromati c maps of the full Sun and the inner corona or selected areas thereof. SUMER will be flown on the Solar and Heliospheric Observatory (SOHO), scheduled for launch in November, 1995. This paper has been written t o familiarize solar physicists with SUMER and to demonstrate some comm and procedures for achieving certain scientific observations.