After returning from an observing trip to Mt Wilson on 13th of July I 
prepared a poster on "MERLIN and VLBI observations of the quasar 
0836+710" for the conference on "Sub-arcsecond Radio Astronomy" in 
Manchester, UK. In it, I presented the first true hybrid map made from 
the combined data of these two radio arrays, which I had made shortly 
before I left Bonn for Washington last year. At the conference, in the 
astrometry session, I also gave a short talk on the results from the 
astrometry observations on Mt Wilson.
After spending one week in Washington, where I prepared the manuscript
of my talk for the conference proceedings and submitted a letter to the
Astrophysical Journal on "A massive binary black hole in 1928+738?", 
work done by Roos, Kaastra, and myself, I left again for Mt Wilson.
I was there three weeks in order to observe the last major astrometry 
session with the MK3. I reduced all data immediately after each night of
observations to assess the quality of the data. The session turned out to 
be a success: I got excellent repeatability of the star positions from one
night to another within the formal errors of the single measurements. In
total, I got six nights for the list of stars that had been initially 
observed in 1988 by Shao and in three further sessions since then.
I also determined the orbits of 7 more binaries, thus increasing the 
number of orbits determined with the MK3 to over 20. Among those, there 
are 13 double-lined binaries for which I calculated the masses and 
luminosities of the components and prepared data sheets including the 
results from spectroscopy. When plotting the components in the
HR-diagram, we find that there is a large fraction of giants in our
sample; it is the giants which were under-represented in mass 
determinations of detached eclipsing spectroscopic binaries to this day, 
since as the likelihood of eclipses increases with decreasing separation 
of the components, so does the likelihood that the giant components have 
filled their Roche-lobes causing mass transfers. 
On the 3rd of September I left for Germany, partly for vacation, partly 
to give three colloquiae in Bonn, Heidelberg, and Munich, on my work on 
astrometry and the spectroscopic binaries. I returned from Germany at 
the end of September.