Prominence monitors, coronagraphs, and interplanetary scintillation arrays can provide useful correlative measurements of temperature, density and velocity diagnostics of the lower and upper corona. Disk or limb observations that aid in identifying the origins of such rays would be extremely useful. Ca K-line observations of network features are valuable as well. Now that SOHO is in operation, coordinated observations are planned for several of the solar and coronal instruments. With simultaneous, multiwavelength observations, we hope to obtain as complete as possible a description of the coronal regions where coronal heating and acceleration of the solar wind is believed to take place.
Primary targets are the north polar hole and the streamer belt surrounding the polar coronal holes.