1-b. Pointing: The target should be an active region on the limb, when the footpoints are visible on the disk. Results from previous campaigns: Previous campaigns have used SUMER in sit-and-stare and images from EIT, Trace or YOHKOH. They have suffered from gaps in the time coverage of the imaging instruments, the fixed SUMER campaign weeks and limited SUMER movement which meant that the RHESSI active region targets were not accessible to SUMER so co-ordination with imaging instruments was not done. The main results have been detection of very fast 10 MK Doppler shifts at CME onset (Innes et al, APJL,549,249,2001) and in the tail of reconnection downflows (Innes et al., SoPh, 217, 267, 2003) and Doppler shift oscillation events (eg Wang et al., AA, 402, L17, 2003).
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