An image will be formed by solar rotation. In addition, simultaneous MDI observations in high resolution mode are highly useful for investigating the physical origins of the observed activity. Not only will the photospheric magnetic field be provided with high resolution, but also the horizontal photospheric velocity field can be derived using correlation tracking. This velocity field is often regarded as the driver of magnetic reconnection events in higher layers. CDS will mainly be able to detect brightenings in a number of lines.
Main target is the quiet sun, where most of the studies discussed above have been performed.
Including an area in proximity to an active region may be optimal. C.J. Schrijver, A. Title, C.C. Kankelborg, P. Martens, H.P. Warren, S. Krucker, subm. A.O. Benz, S. Krucker, Solar Phys. K.P. Dere, J.-D.F. Bartoe, G. Brueckner, Solar Phys. D.E. Innes, P. Brekke, D. Germerott, K. Wilhelm, Solar Phys.