I was granted for 2-months stay at Kiepenheuer Institute for Solar Physics by the German Research Foundation (DFG) working with Dr. H. Wohl (grant 436 SLK 17/3/98). Two aims of the stay were :
My work resulted in new information on two instrumental effects of the SUMER/SOHO spectrometer. Contributions were presented on 2 conferencies and publications were printed in their proceedings: The first effect of rotation compensation periodicities and the second effect of thermoelestic periodicities were discuussed in December 1998 with SUMER team (Dr.K.Wilhelm, Dr.W.Curdt) during my visit of the Max-Planck Institut for Aeronomy at Katlenburg-Lindau. Fortunately both effects can be overcome with spectial preparation of the SUMER observing runs.
Plasma rotation data have shown that a better TV CCD camera is needed for the project in order to reach the measurements precision needed for the detarmination of the plasma rotational motion relatively to the spot. IUnformation on the project status has been presented before my stay but the latest results obtained at KIS during the stay have been uncluded to the published paper 'Fiber Optics Device for Solar Spectroscopy - First Measurements'.