The Need of Ground-Correlated High-Resolution Space Observations in the Visible

Extract

Solar Research during the last decade has definitely shown that almost all primary processes which build up the chromosphere and the inner corona, as well as the observable basic events leading to the optical manifestation of solar activity occur practically all in the subtelescopic range, as far as ground-based observation is concerned. I think here mainly of the great variety of phenomena occurring in the intergranular space (width <0″.3) and intersupergranular space (width <1″). Because of this situation we have only very few reliable information about the structural transition between photosphere and chromosphere, how the granulation goes over into the complex chromospheric structures as bright and dark mottles, spicules, threads, loops, or fibrils. In this region theory can still get along without being disturbed too much by observation. The situation is somewhat like looking into a human face with a resolving power of 1 or 2 cm!